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Posted to users@tapestry.apache.org by xfile80303 <le...@grokers.net> on 2009/10/02 03:04:40 UTC
[T5.1] AJAX Form Validation
Hello all,
I'm seing some interesting behavior I hope you can help me sort out.
I have a form which I would like to display an error message (custom) should
the form validation fail. I'd like to do this via AJAX since the contents
of the form are created via AJAX and refreshing the page to display this
error message will lose this context.
So, I have something like this:
<t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
visible="${errorVisible}">
No items have been selected.
</t:zone>
<t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
<form t:id="parts" t:zone="nothingSelectedZone">
<input type="button" t:type="submit" value="Do It"/>
</form>
</t:zone>
void onValidateFormFromParts()
{
if (isValid())
{
_parts.recordError("No items selected.");
}
else
{
_parts.clearErrors();
}
errorVisible = _parts.getHasErrors();
}
Object onSuccessFromParts()
{
return otherPage;
}
Object onFailureFromParts()
{
return nothingSelectedZone.getBody();
}
If there's no error with validation, the success method gets called fine,
and I am redirected to the otherPage.
If there is an error with validation, the nothingSelectedZone is updated and
the error message is displayed.
However, if, after a validation error I try to re-submit the form, nothing
happens at all. I've put breakpoints in my debugger on these three methods
and they don't get hit in this case. It's as if the form submit is not
taking place after the initial validation error.
I'd love some input.
Thanks,
Levi
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Re: [T5.1] AJAX Form Validation
Posted by Josh Canfield <jo...@thedailytube.com>.
Hi,
I wasn't the one with the problem, and I'm not sure that Levi ever
said what was specifically wrong.
Post the specifics of your problem in a separate thread and I'm sure
someone will be able to help.
Josh
On Thu, Oct 22, 2009 at 6:23 AM, superslip103 <ro...@db.com> wrote:
>
> Hi Josh
> What was your encoding issue? I'm having the same issue here with a
> SelectBox Encoder.
>
> Ro
>
>
> xfile80303 wrote:
>>
>>
>> Thanks Josh!
>>
>> You helped me identify that it was an encoder issue on my end.
>>
>> I appreciate your help. :)
>>
>> Cheers,
>>
>> Levi
>>
>>
>> Josh Canfield wrote:
>>>
>>> The only change I made was making isValid into a property and a
>>> checkbox in the form so I could switch between behaviors.
>>>
>>> Here is the complete code that works for me.
>>>
>>> public class Index {
>>> @Component
>>> private Zone nothingSelectedZone;
>>>
>>> @Component
>>> private Form _parts;
>>>
>>> @Property
>>> private boolean errorVisible;
>>>
>>> @Property
>>> private boolean resultsVisible = true;
>>>
>>> @Property
>>> private boolean _valid;
>>>
>>> @InjectPage
>>> private LoopedForm otherPage; // a random page I have in my
>>> experiments project.
>>>
>>> void onValidateFormFromParts() {
>>> if (_valid) {
>>> _parts.recordError("No items selected.");
>>> } else {
>>> resultsVisible = true;
>>> _parts.clearErrors();
>>> }
>>> errorVisible = _parts.getHasErrors();
>>> }
>>>
>>> Object onSuccessFromParts() {
>>> return otherPage;
>>> }
>>>
>>> Object onFailureFromParts() {
>>> return nothingSelectedZone.getBody();
>>> }
>>> }
>>>
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <!DOCTYPE html
>>> PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>>> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
>>>
>>> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd"
>>> xmlns="http://www.w3.org/1999/xhtml"
>>> xml:lang="en"
>>> lang="en">
>>> <head>
>>> <title>Experiment Home</title>
>>> </head>
>>> <body>
>>>
>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>> visible="${errorVisible}">
>>> No items have been selected.
>>> </t:zone>
>>> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>> <t:checkbox value="valid"/>
>>> <input type="button" t:type="submit" value="Do It"/>
>>> </form>
>>> </t:zone>
>>>
>>> </body>
>>> </html>
>>>
>>> On Fri, Oct 2, 2009 at 6:03 PM, xfile80303 <le...@grokers.net> wrote:
>>>>
>>>> Hi Josh,
>>>>
>>>> Thanks for looking.
>>>>
>>>> I'm afraid the stack trace I provided is a red herring and does not have
>>>> any
>>>> bearing on the situation. It comes from the fact that my encoder was
>>>> getting purged from the session due to it being set as FLASH only. And
>>>> this
>>>> exception actually only happens after I changed the code from:
>>>>
>>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>>> to
>>>> <form t:id="parts" t:zone="resultsZone">
>>>>
>>>> which actually works... it's as if something in the form needs to be
>>>> rebuilt
>>>> after the submit.
>>>>
>>>> You say you were able to get my code to work? As is, or did you need to
>>>> make
>>>> changes? I'd still like to have the flexibility to refresh the
>>>> nothingSelectedZone and not touch the resultsZone.
>>>>
>>>> Cheers,
>>>>
>>>> Levi
>>>>
>>>>
>>>> Josh Canfield wrote:
>>>>>
>>>>> Your example code works fine and the exception you provide makes it
>>>>> look like you're in a loop?
>>>>>
>>>>>> Caused by: java.lang.NullPointerException
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>>>
>>>>> That line from the code:
>>>>> // We assume that if an encoder is available when we rendered,
>>>>> that one will be available
>>>>> // when the form is submitted.
>>>>> Object restoredValue = encoder.toValue(clientValue);
>>>>>
>>>>> Makes me think that you aren't getting an encoder?
>>>>>
>>>>> Can you provide a simple and complete example that breaks?
>>>>> Josh
>>>>>
>>>>> On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <le...@grokers.net> wrote:
>>>>>>
>>>>>> Okay, I have some more information...
>>>>>>
>>>>>> When I click on the submit button, after the validation error, I see
>>>>>> this
>>>>>> in
>>>>>> the log:
>>>>>>
>>>>>> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request
>>>>>> failed
>>>>>> with uncaught exception:
>>>>>> org.apache.tapestry5.runtime.ComponentEventException
>>>>>> org.apache.tapestry5.runtime.ComponentEventException [at
>>>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
>>>>>> at
>>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
>>>>>> at
>>>>>> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>>>>>> at
>>>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>>>> at
>>>>>> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
>>>>>> at
>>>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>>>> at
>>>>>> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
>>>>>> at
>>>>>> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
>>>>>> at
>>>>>> $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
>>>>>> at
>>>>>> $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
>>>>>> at
>>>>>> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>>>>>> at
>>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>>> at
>>>>>> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
>>>>>> at
>>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>>> at
>>>>>> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
>>>>>> at
>>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
>>>>>> at
>>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>>> at
>>>>>> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
>>>>>> at
>>>>>> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
>>>>>> at
>>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
>>>>>> at
>>>>>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
>>>>>> at
>>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>>> at
>>>>>> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
>>>>>> at
>>>>>> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
>>>>>> at
>>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>>>>>> at
>>>>>> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
>>>>>> at
>>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>>> at
>>>>>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
>>>>>> at
>>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>>> at
>>>>>> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
>>>>>> at
>>>>>> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
>>>>>> at
>>>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>>>>> at
>>>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>>> at
>>>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>>>>>> at
>>>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>>>>>> at
>>>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>>>>>> at
>>>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>>>>> at
>>>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>>>>> at
>>>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
>>>>>> at
>>>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
>>>>>> at
>>>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>>>>>> at
>>>>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
>>>>>> at java.lang.Thread.run(Thread.java:637)
>>>>>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException
>>>>>> [at
>>>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
>>>>>> at
>>>>>> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
>>>>>> at
>>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
>>>>>> ... 52 more
>>>>>> Caused by: java.lang.NullPointerException
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
>>>>>> at
>>>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
>>>>>> ... 62 more
>>>>>>
>>>>>>
>>>>>> I would really appreciate some help understanding why this is broken.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Levi
>>>>>>
>>>>>>
>>>>>> xfile80303 wrote:
>>>>>>>
>>>>>>> Hello all,
>>>>>>>
>>>>>>> I'm seing some interesting behavior I hope you can help me sort out.
>>>>>>>
>>>>>>> I have a form which I would like to display an error message (custom)
>>>>>>> should the form validation fail. I'd like to do this via AJAX since
>>>>>>> the
>>>>>>> contents of the form are created via AJAX and refreshing the page to
>>>>>>> display this error message will lose this context.
>>>>>>>
>>>>>>> So, I have something like this:
>>>>>>>
>>>>>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>>>>>> visible="${errorVisible}">
>>>>>>> No items have been selected.
>>>>>>> </t:zone>
>>>>>>>
>>>>>>> <t:zone t:id="resultsZone" id="resultsZone"
>>>>>>> visible="${resultsVisible}">
>>>>>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>>>>>> <input type="button" t:type="submit" value="Do It"/>
>>>>>>> </form>
>>>>>>> </t:zone>
>>>>>>>
>>>>>>> void onValidateFormFromParts()
>>>>>>> {
>>>>>>> if (isValid())
>>>>>>> {
>>>>>>> _parts.recordError("No items selected.");
>>>>>>> }
>>>>>>> else
>>>>>>> {
>>>>>>> _parts.clearErrors();
>>>>>>> }
>>>>>>> errorVisible = _parts.getHasErrors();
>>>>>>> }
>>>>>>>
>>>>>>> Object onSuccessFromParts()
>>>>>>> {
>>>>>>> return otherPage;
>>>>>>> }
>>>>>>>
>>>>>>> Object onFailureFromParts()
>>>>>>> {
>>>>>>> return nothingSelectedZone.getBody();
>>>>>>> }
>>>>>>>
>>>>>>> If there's no error with validation, the success method gets called
>>>>>>> fine,
>>>>>>> and I am redirected to the otherPage.
>>>>>>> If there is an error with validation, the nothingSelectedZone is
>>>>>>> updated
>>>>>>> and the error message is displayed.
>>>>>>> However, if, after a validation error I try to re-submit the form,
>>>>>>> nothing
>>>>>>> happens at all. I've put breakpoints in my debugger on these three
>>>>>>> methods and they don't get hit in this case. It's as if the form
>>>>>>> submit
>>>>>>> is not taking place after the initial validation error.
>>>>>>>
>>>>>>> I'd love some input.
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Levi
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> View this message in context:
>>>>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
>>>>>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> --
>>>>> TheDailyTube.com. Sign up and get the best new videos on the internet
>>>>> delivered fresh to your inbox.
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>
>>>>>
>>>>>
>>>>
>>>> --
>>>> View this message in context:
>>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758648.html
>>>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> --
>>> TheDailyTube.com. Sign up and get the best new videos on the internet
>>> delivered fresh to your inbox.
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>
>>>
>>>
>>
>> --
>> View this message in context:
>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3771514.html
>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
> --
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> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
>
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Re: [T5.1] AJAX Form Validation
Posted by superslip103 <ro...@db.com>.
Hi Josh
What was your encoding issue? I'm having the same issue here with a
SelectBox Encoder.
Ro
xfile80303 wrote:
>
>
> Thanks Josh!
>
> You helped me identify that it was an encoder issue on my end.
>
> I appreciate your help. :)
>
> Cheers,
>
> Levi
>
>
> Josh Canfield wrote:
>>
>> The only change I made was making isValid into a property and a
>> checkbox in the form so I could switch between behaviors.
>>
>> Here is the complete code that works for me.
>>
>> public class Index {
>> @Component
>> private Zone nothingSelectedZone;
>>
>> @Component
>> private Form _parts;
>>
>> @Property
>> private boolean errorVisible;
>>
>> @Property
>> private boolean resultsVisible = true;
>>
>> @Property
>> private boolean _valid;
>>
>> @InjectPage
>> private LoopedForm otherPage; // a random page I have in my
>> experiments project.
>>
>> void onValidateFormFromParts() {
>> if (_valid) {
>> _parts.recordError("No items selected.");
>> } else {
>> resultsVisible = true;
>> _parts.clearErrors();
>> }
>> errorVisible = _parts.getHasErrors();
>> }
>>
>> Object onSuccessFromParts() {
>> return otherPage;
>> }
>>
>> Object onFailureFromParts() {
>> return nothingSelectedZone.getBody();
>> }
>> }
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE html
>> PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
>>
>> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd"
>> xmlns="http://www.w3.org/1999/xhtml"
>> xml:lang="en"
>> lang="en">
>> <head>
>> <title>Experiment Home</title>
>> </head>
>> <body>
>>
>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>> visible="${errorVisible}">
>> No items have been selected.
>> </t:zone>
>> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
>> <form t:id="parts" t:zone="nothingSelectedZone">
>> <t:checkbox value="valid"/>
>> <input type="button" t:type="submit" value="Do It"/>
>> </form>
>> </t:zone>
>>
>> </body>
>> </html>
>>
>> On Fri, Oct 2, 2009 at 6:03 PM, xfile80303 <le...@grokers.net> wrote:
>>>
>>> Hi Josh,
>>>
>>> Thanks for looking.
>>>
>>> I'm afraid the stack trace I provided is a red herring and does not have
>>> any
>>> bearing on the situation. It comes from the fact that my encoder was
>>> getting purged from the session due to it being set as FLASH only. And
>>> this
>>> exception actually only happens after I changed the code from:
>>>
>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>> to
>>> <form t:id="parts" t:zone="resultsZone">
>>>
>>> which actually works... it's as if something in the form needs to be
>>> rebuilt
>>> after the submit.
>>>
>>> You say you were able to get my code to work? As is, or did you need to
>>> make
>>> changes? I'd still like to have the flexibility to refresh the
>>> nothingSelectedZone and not touch the resultsZone.
>>>
>>> Cheers,
>>>
>>> Levi
>>>
>>>
>>> Josh Canfield wrote:
>>>>
>>>> Your example code works fine and the exception you provide makes it
>>>> look like you're in a loop?
>>>>
>>>>> Caused by: java.lang.NullPointerException
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>>
>>>> That line from the code:
>>>> // We assume that if an encoder is available when we rendered,
>>>> that one will be available
>>>> // when the form is submitted.
>>>> Object restoredValue = encoder.toValue(clientValue);
>>>>
>>>> Makes me think that you aren't getting an encoder?
>>>>
>>>> Can you provide a simple and complete example that breaks?
>>>> Josh
>>>>
>>>> On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <le...@grokers.net> wrote:
>>>>>
>>>>> Okay, I have some more information...
>>>>>
>>>>> When I click on the submit button, after the validation error, I see
>>>>> this
>>>>> in
>>>>> the log:
>>>>>
>>>>> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request
>>>>> failed
>>>>> with uncaught exception:
>>>>> org.apache.tapestry5.runtime.ComponentEventException
>>>>> org.apache.tapestry5.runtime.ComponentEventException [at
>>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
>>>>> at
>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
>>>>> at
>>>>> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
>>>>> at
>>>>> $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
>>>>> at
>>>>> $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
>>>>> at
>>>>> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
>>>>> at
>>>>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
>>>>> at
>>>>> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>>>>> at
>>>>> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
>>>>> at
>>>>> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
>>>>> at
>>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>>>> at
>>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>> at
>>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>>>>> at
>>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>>>>> at
>>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>>>>> at
>>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>>>> at
>>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>>>> at
>>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
>>>>> at
>>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
>>>>> at
>>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>>>>> at
>>>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
>>>>> at java.lang.Thread.run(Thread.java:637)
>>>>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException
>>>>> [at
>>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
>>>>> at
>>>>> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
>>>>> at
>>>>> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
>>>>> at
>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
>>>>> ... 52 more
>>>>> Caused by: java.lang.NullPointerException
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
>>>>> ... 62 more
>>>>>
>>>>>
>>>>> I would really appreciate some help understanding why this is broken.
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Levi
>>>>>
>>>>>
>>>>> xfile80303 wrote:
>>>>>>
>>>>>> Hello all,
>>>>>>
>>>>>> I'm seing some interesting behavior I hope you can help me sort out.
>>>>>>
>>>>>> I have a form which I would like to display an error message (custom)
>>>>>> should the form validation fail. I'd like to do this via AJAX since
>>>>>> the
>>>>>> contents of the form are created via AJAX and refreshing the page to
>>>>>> display this error message will lose this context.
>>>>>>
>>>>>> So, I have something like this:
>>>>>>
>>>>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>>>>> visible="${errorVisible}">
>>>>>> No items have been selected.
>>>>>> </t:zone>
>>>>>>
>>>>>> <t:zone t:id="resultsZone" id="resultsZone"
>>>>>> visible="${resultsVisible}">
>>>>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>>>>> <input type="button" t:type="submit" value="Do It"/>
>>>>>> </form>
>>>>>> </t:zone>
>>>>>>
>>>>>> void onValidateFormFromParts()
>>>>>> {
>>>>>> if (isValid())
>>>>>> {
>>>>>> _parts.recordError("No items selected.");
>>>>>> }
>>>>>> else
>>>>>> {
>>>>>> _parts.clearErrors();
>>>>>> }
>>>>>> errorVisible = _parts.getHasErrors();
>>>>>> }
>>>>>>
>>>>>> Object onSuccessFromParts()
>>>>>> {
>>>>>> return otherPage;
>>>>>> }
>>>>>>
>>>>>> Object onFailureFromParts()
>>>>>> {
>>>>>> return nothingSelectedZone.getBody();
>>>>>> }
>>>>>>
>>>>>> If there's no error with validation, the success method gets called
>>>>>> fine,
>>>>>> and I am redirected to the otherPage.
>>>>>> If there is an error with validation, the nothingSelectedZone is
>>>>>> updated
>>>>>> and the error message is displayed.
>>>>>> However, if, after a validation error I try to re-submit the form,
>>>>>> nothing
>>>>>> happens at all. I've put breakpoints in my debugger on these three
>>>>>> methods and they don't get hit in this case. It's as if the form
>>>>>> submit
>>>>>> is not taking place after the initial validation error.
>>>>>>
>>>>>> I'd love some input.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Levi
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
>>>>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> --
>>>> TheDailyTube.com. Sign up and get the best new videos on the internet
>>>> delivered fresh to your inbox.
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>
>>>>
>>>>
>>>
>>> --
>>> View this message in context:
>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758648.html
>>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>
>>>
>>
>>
>>
>> --
>> --
>> TheDailyTube.com. Sign up and get the best new videos on the internet
>> delivered fresh to your inbox.
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
> --
> View this message in context:
> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3771514.html
> Sent from the Tapestry Users mailing list archive at Nabble.com.
>
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Re: [T5.1] AJAX Form Validation
Posted by xfile80303 <le...@grokers.net>.
Thanks Josh!
You helped me identify that it was an encoder issue on my end.
I appreciate your help. :)
Cheers,
Levi
Josh Canfield wrote:
>
> The only change I made was making isValid into a property and a
> checkbox in the form so I could switch between behaviors.
>
> Here is the complete code that works for me.
>
> public class Index {
> @Component
> private Zone nothingSelectedZone;
>
> @Component
> private Form _parts;
>
> @Property
> private boolean errorVisible;
>
> @Property
> private boolean resultsVisible = true;
>
> @Property
> private boolean _valid;
>
> @InjectPage
> private LoopedForm otherPage; // a random page I have in my
> experiments project.
>
> void onValidateFormFromParts() {
> if (_valid) {
> _parts.recordError("No items selected.");
> } else {
> resultsVisible = true;
> _parts.clearErrors();
> }
> errorVisible = _parts.getHasErrors();
> }
>
> Object onSuccessFromParts() {
> return otherPage;
> }
>
> Object onFailureFromParts() {
> return nothingSelectedZone.getBody();
> }
> }
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE html
> PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
>
> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd"
> xmlns="http://www.w3.org/1999/xhtml"
> xml:lang="en"
> lang="en">
> <head>
> <title>Experiment Home</title>
> </head>
> <body>
>
> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
> visible="${errorVisible}">
> No items have been selected.
> </t:zone>
> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
> <form t:id="parts" t:zone="nothingSelectedZone">
> <t:checkbox value="valid"/>
> <input type="button" t:type="submit" value="Do It"/>
> </form>
> </t:zone>
>
> </body>
> </html>
>
> On Fri, Oct 2, 2009 at 6:03 PM, xfile80303 <le...@grokers.net> wrote:
>>
>> Hi Josh,
>>
>> Thanks for looking.
>>
>> I'm afraid the stack trace I provided is a red herring and does not have
>> any
>> bearing on the situation. It comes from the fact that my encoder was
>> getting purged from the session due to it being set as FLASH only. And
>> this
>> exception actually only happens after I changed the code from:
>>
>> <form t:id="parts" t:zone="nothingSelectedZone">
>> to
>> <form t:id="parts" t:zone="resultsZone">
>>
>> which actually works... it's as if something in the form needs to be
>> rebuilt
>> after the submit.
>>
>> You say you were able to get my code to work? As is, or did you need to
>> make
>> changes? I'd still like to have the flexibility to refresh the
>> nothingSelectedZone and not touch the resultsZone.
>>
>> Cheers,
>>
>> Levi
>>
>>
>> Josh Canfield wrote:
>>>
>>> Your example code works fine and the exception you provide makes it
>>> look like you're in a loop?
>>>
>>>> Caused by: java.lang.NullPointerException
>>>> at
>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>
>>> That line from the code:
>>> // We assume that if an encoder is available when we rendered,
>>> that one will be available
>>> // when the form is submitted.
>>> Object restoredValue = encoder.toValue(clientValue);
>>>
>>> Makes me think that you aren't getting an encoder?
>>>
>>> Can you provide a simple and complete example that breaks?
>>> Josh
>>>
>>> On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <le...@grokers.net> wrote:
>>>>
>>>> Okay, I have some more information...
>>>>
>>>> When I click on the submit button, after the validation error, I see
>>>> this
>>>> in
>>>> the log:
>>>>
>>>> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request
>>>> failed
>>>> with uncaught exception:
>>>> org.apache.tapestry5.runtime.ComponentEventException
>>>> org.apache.tapestry5.runtime.ComponentEventException [at
>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
>>>> at
>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
>>>> at
>>>> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
>>>> at
>>>> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>>>> at
>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>> at
>>>> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
>>>> at
>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>> at
>>>> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
>>>> at
>>>> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
>>>> at
>>>> $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
>>>> at
>>>> $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
>>>> at
>>>> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
>>>> at
>>>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>>>> at
>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>> at
>>>> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
>>>> at
>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>> at
>>>> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
>>>> at
>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
>>>> at
>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>> at
>>>> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
>>>> at
>>>> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
>>>> at
>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
>>>> at
>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
>>>> at
>>>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
>>>> at
>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
>>>> at
>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>> at
>>>> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
>>>> at
>>>> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
>>>> at
>>>> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
>>>> at
>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>>>> at
>>>> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
>>>> at
>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>> at
>>>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
>>>> at
>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>> at
>>>> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
>>>> at
>>>> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
>>>> at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>>> at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>> at
>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>>>> at
>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>>>> at
>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>>>> at
>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>>> at
>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>>> at
>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
>>>> at
>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
>>>> at
>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>>>> at
>>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
>>>> at java.lang.Thread.run(Thread.java:637)
>>>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at
>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
>>>> at
>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
>>>> at
>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
>>>> at
>>>> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
>>>> at
>>>> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
>>>> at
>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
>>>> at
>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
>>>> at
>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
>>>> ... 52 more
>>>> Caused by: java.lang.NullPointerException
>>>> at
>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
>>>> at
>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
>>>> ... 62 more
>>>>
>>>>
>>>> I would really appreciate some help understanding why this is broken.
>>>>
>>>> Thanks,
>>>>
>>>> Levi
>>>>
>>>>
>>>> xfile80303 wrote:
>>>>>
>>>>> Hello all,
>>>>>
>>>>> I'm seing some interesting behavior I hope you can help me sort out.
>>>>>
>>>>> I have a form which I would like to display an error message (custom)
>>>>> should the form validation fail. I'd like to do this via AJAX since
>>>>> the
>>>>> contents of the form are created via AJAX and refreshing the page to
>>>>> display this error message will lose this context.
>>>>>
>>>>> So, I have something like this:
>>>>>
>>>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>>>> visible="${errorVisible}">
>>>>> No items have been selected.
>>>>> </t:zone>
>>>>>
>>>>> <t:zone t:id="resultsZone" id="resultsZone"
>>>>> visible="${resultsVisible}">
>>>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>>>> <input type="button" t:type="submit" value="Do It"/>
>>>>> </form>
>>>>> </t:zone>
>>>>>
>>>>> void onValidateFormFromParts()
>>>>> {
>>>>> if (isValid())
>>>>> {
>>>>> _parts.recordError("No items selected.");
>>>>> }
>>>>> else
>>>>> {
>>>>> _parts.clearErrors();
>>>>> }
>>>>> errorVisible = _parts.getHasErrors();
>>>>> }
>>>>>
>>>>> Object onSuccessFromParts()
>>>>> {
>>>>> return otherPage;
>>>>> }
>>>>>
>>>>> Object onFailureFromParts()
>>>>> {
>>>>> return nothingSelectedZone.getBody();
>>>>> }
>>>>>
>>>>> If there's no error with validation, the success method gets called
>>>>> fine,
>>>>> and I am redirected to the otherPage.
>>>>> If there is an error with validation, the nothingSelectedZone is
>>>>> updated
>>>>> and the error message is displayed.
>>>>> However, if, after a validation error I try to re-submit the form,
>>>>> nothing
>>>>> happens at all. I've put breakpoints in my debugger on these three
>>>>> methods and they don't get hit in this case. It's as if the form
>>>>> submit
>>>>> is not taking place after the initial validation error.
>>>>>
>>>>> I'd love some input.
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Levi
>>>>>
>>>>>
>>>>
>>>> --
>>>> View this message in context:
>>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
>>>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>>>
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>>>>
>>>
>>>
>>>
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Re: [T5.1] AJAX Form Validation
Posted by Josh Canfield <jo...@thedailytube.com>.
The only change I made was making isValid into a property and a
checkbox in the form so I could switch between behaviors.
Here is the complete code that works for me.
public class Index {
@Component
private Zone nothingSelectedZone;
@Component
private Form _parts;
@Property
private boolean errorVisible;
@Property
private boolean resultsVisible = true;
@Property
private boolean _valid;
@InjectPage
private LoopedForm otherPage; // a random page I have in my
experiments project.
void onValidateFormFromParts() {
if (_valid) {
_parts.recordError("No items selected.");
} else {
resultsVisible = true;
_parts.clearErrors();
}
errorVisible = _parts.getHasErrors();
}
Object onSuccessFromParts() {
return otherPage;
}
Object onFailureFromParts() {
return nothingSelectedZone.getBody();
}
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd"
xmlns="http://www.w3.org/1999/xhtml"
xml:lang="en"
lang="en">
<head>
<title>Experiment Home</title>
</head>
<body>
<t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
visible="${errorVisible}">
No items have been selected.
</t:zone>
<t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
<form t:id="parts" t:zone="nothingSelectedZone">
<t:checkbox value="valid"/>
<input type="button" t:type="submit" value="Do It"/>
</form>
</t:zone>
</body>
</html>
On Fri, Oct 2, 2009 at 6:03 PM, xfile80303 <le...@grokers.net> wrote:
>
> Hi Josh,
>
> Thanks for looking.
>
> I'm afraid the stack trace I provided is a red herring and does not have any
> bearing on the situation. It comes from the fact that my encoder was
> getting purged from the session due to it being set as FLASH only. And this
> exception actually only happens after I changed the code from:
>
> <form t:id="parts" t:zone="nothingSelectedZone">
> to
> <form t:id="parts" t:zone="resultsZone">
>
> which actually works... it's as if something in the form needs to be rebuilt
> after the submit.
>
> You say you were able to get my code to work? As is, or did you need to make
> changes? I'd still like to have the flexibility to refresh the
> nothingSelectedZone and not touch the resultsZone.
>
> Cheers,
>
> Levi
>
>
> Josh Canfield wrote:
>>
>> Your example code works fine and the exception you provide makes it
>> look like you're in a loop?
>>
>>> Caused by: java.lang.NullPointerException
>>> at
>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>
>> That line from the code:
>> // We assume that if an encoder is available when we rendered,
>> that one will be available
>> // when the form is submitted.
>> Object restoredValue = encoder.toValue(clientValue);
>>
>> Makes me think that you aren't getting an encoder?
>>
>> Can you provide a simple and complete example that breaks?
>> Josh
>>
>> On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <le...@grokers.net> wrote:
>>>
>>> Okay, I have some more information...
>>>
>>> When I click on the submit button, after the validation error, I see this
>>> in
>>> the log:
>>>
>>> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request
>>> failed
>>> with uncaught exception:
>>> org.apache.tapestry5.runtime.ComponentEventException
>>> org.apache.tapestry5.runtime.ComponentEventException [at
>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
>>> at
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
>>> at
>>> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
>>> at
>>> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
>>> at
>>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>>> at
>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>> at
>>> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
>>> at
>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>> at
>>> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
>>> at
>>> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
>>> at
>>> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
>>> at
>>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
>>> at $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
>>> at $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
>>> at
>>> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
>>> at
>>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>>> at
>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>> at
>>> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
>>> at
>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>> at
>>> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
>>> at
>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>> at
>>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
>>> at
>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>> at
>>> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
>>> at
>>> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
>>> at
>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>> at
>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
>>> at
>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
>>> at
>>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
>>> at
>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
>>> at
>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>> at
>>> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
>>> at
>>> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
>>> at
>>> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
>>> at
>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>> at
>>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>>> at
>>> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
>>> at
>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>> at
>>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
>>> at
>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>> at
>>> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
>>> at
>>> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
>>> at
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>> at
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>> at
>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>>> at
>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>>> at
>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>>> at
>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>> at
>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>> at
>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
>>> at
>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
>>> at
>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>>> at
>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
>>> at java.lang.Thread.run(Thread.java:637)
>>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at
>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
>>> at
>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
>>> at
>>> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
>>> at
>>> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
>>> at
>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
>>> at
>>> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
>>> at
>>> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
>>> at
>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
>>> at
>>> org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
>>> at
>>> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
>>> at
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
>>> at
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
>>> ... 52 more
>>> Caused by: java.lang.NullPointerException
>>> at
>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>> at
>>> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
>>> at
>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
>>> at
>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
>>> at
>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
>>> ... 62 more
>>>
>>>
>>> I would really appreciate some help understanding why this is broken.
>>>
>>> Thanks,
>>>
>>> Levi
>>>
>>>
>>> xfile80303 wrote:
>>>>
>>>> Hello all,
>>>>
>>>> I'm seing some interesting behavior I hope you can help me sort out.
>>>>
>>>> I have a form which I would like to display an error message (custom)
>>>> should the form validation fail. I'd like to do this via AJAX since the
>>>> contents of the form are created via AJAX and refreshing the page to
>>>> display this error message will lose this context.
>>>>
>>>> So, I have something like this:
>>>>
>>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>>> visible="${errorVisible}">
>>>> No items have been selected.
>>>> </t:zone>
>>>>
>>>> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
>>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>>> <input type="button" t:type="submit" value="Do It"/>
>>>> </form>
>>>> </t:zone>
>>>>
>>>> void onValidateFormFromParts()
>>>> {
>>>> if (isValid())
>>>> {
>>>> _parts.recordError("No items selected.");
>>>> }
>>>> else
>>>> {
>>>> _parts.clearErrors();
>>>> }
>>>> errorVisible = _parts.getHasErrors();
>>>> }
>>>>
>>>> Object onSuccessFromParts()
>>>> {
>>>> return otherPage;
>>>> }
>>>>
>>>> Object onFailureFromParts()
>>>> {
>>>> return nothingSelectedZone.getBody();
>>>> }
>>>>
>>>> If there's no error with validation, the success method gets called
>>>> fine,
>>>> and I am redirected to the otherPage.
>>>> If there is an error with validation, the nothingSelectedZone is updated
>>>> and the error message is displayed.
>>>> However, if, after a validation error I try to re-submit the form,
>>>> nothing
>>>> happens at all. I've put breakpoints in my debugger on these three
>>>> methods and they don't get hit in this case. It's as if the form submit
>>>> is not taking place after the initial validation error.
>>>>
>>>> I'd love some input.
>>>>
>>>> Thanks,
>>>>
>>>> Levi
>>>>
>>>>
>>>
>>> --
>>> View this message in context:
>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
>>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>
>>>
>>
>>
>>
>> --
>> --
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>> delivered fresh to your inbox.
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>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
> --
> View this message in context: http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758648.html
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>
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>
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Re: [T5.1] AJAX Form Validation
Posted by xfile80303 <le...@grokers.net>.
Hi Josh,
Thanks for looking.
I'm afraid the stack trace I provided is a red herring and does not have any
bearing on the situation. It comes from the fact that my encoder was
getting purged from the session due to it being set as FLASH only. And this
exception actually only happens after I changed the code from:
<form t:id="parts" t:zone="nothingSelectedZone">
to
<form t:id="parts" t:zone="resultsZone">
which actually works... it's as if something in the form needs to be rebuilt
after the submit.
You say you were able to get my code to work? As is, or did you need to make
changes? I'd still like to have the flexibility to refresh the
nothingSelectedZone and not touch the resultsZone.
Cheers,
Levi
Josh Canfield wrote:
>
> Your example code works fine and the exception you provide makes it
> look like you're in a loop?
>
>> Caused by: java.lang.NullPointerException
>> at
>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>
> That line from the code:
> // We assume that if an encoder is available when we rendered,
> that one will be available
> // when the form is submitted.
> Object restoredValue = encoder.toValue(clientValue);
>
> Makes me think that you aren't getting an encoder?
>
> Can you provide a simple and complete example that breaks?
> Josh
>
> On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <le...@grokers.net> wrote:
>>
>> Okay, I have some more information...
>>
>> When I click on the submit button, after the validation error, I see this
>> in
>> the log:
>>
>> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request
>> failed
>> with uncaught exception:
>> org.apache.tapestry5.runtime.ComponentEventException
>> org.apache.tapestry5.runtime.ComponentEventException [at
>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
>> at
>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
>> at
>> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
>> at
>> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
>> at
>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>> at
>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>> at
>> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
>> at
>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>> at
>> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
>> at
>> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
>> at
>> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
>> at
>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
>> at $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
>> at $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
>> at
>> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
>> at
>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>> at
>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>> at
>> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
>> at
>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>> at
>> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
>> at
>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>> at
>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
>> at
>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>> at
>> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
>> at
>> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
>> at
>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>> at
>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
>> at
>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
>> at
>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
>> at
>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
>> at
>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>> at
>> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
>> at
>> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
>> at
>> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
>> at
>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>> at
>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>> at
>> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
>> at
>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>> at
>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
>> at
>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>> at
>> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
>> at
>> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> at
>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>> at
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>> at
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>> at
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>> at
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>> at
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
>> at
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
>> at
>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>> at
>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
>> at java.lang.Thread.run(Thread.java:637)
>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at
>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
>> at
>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
>> at
>> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
>> at
>> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
>> at
>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
>> at
>> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
>> at
>> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
>> at
>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
>> at
>> org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
>> at
>> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
>> at
>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
>> at
>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
>> ... 52 more
>> Caused by: java.lang.NullPointerException
>> at
>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>> at
>> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
>> at
>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
>> at
>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
>> at
>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
>> ... 62 more
>>
>>
>> I would really appreciate some help understanding why this is broken.
>>
>> Thanks,
>>
>> Levi
>>
>>
>> xfile80303 wrote:
>>>
>>> Hello all,
>>>
>>> I'm seing some interesting behavior I hope you can help me sort out.
>>>
>>> I have a form which I would like to display an error message (custom)
>>> should the form validation fail. I'd like to do this via AJAX since the
>>> contents of the form are created via AJAX and refreshing the page to
>>> display this error message will lose this context.
>>>
>>> So, I have something like this:
>>>
>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>> visible="${errorVisible}">
>>> No items have been selected.
>>> </t:zone>
>>>
>>> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>> <input type="button" t:type="submit" value="Do It"/>
>>> </form>
>>> </t:zone>
>>>
>>> void onValidateFormFromParts()
>>> {
>>> if (isValid())
>>> {
>>> _parts.recordError("No items selected.");
>>> }
>>> else
>>> {
>>> _parts.clearErrors();
>>> }
>>> errorVisible = _parts.getHasErrors();
>>> }
>>>
>>> Object onSuccessFromParts()
>>> {
>>> return otherPage;
>>> }
>>>
>>> Object onFailureFromParts()
>>> {
>>> return nothingSelectedZone.getBody();
>>> }
>>>
>>> If there's no error with validation, the success method gets called
>>> fine,
>>> and I am redirected to the otherPage.
>>> If there is an error with validation, the nothingSelectedZone is updated
>>> and the error message is displayed.
>>> However, if, after a validation error I try to re-submit the form,
>>> nothing
>>> happens at all. I've put breakpoints in my debugger on these three
>>> methods and they don't get hit in this case. It's as if the form submit
>>> is not taking place after the initial validation error.
>>>
>>> I'd love some input.
>>>
>>> Thanks,
>>>
>>> Levi
>>>
>>>
>>
>> --
>> View this message in context:
>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
>> Sent from the Tapestry Users mailing list archive at Nabble.com.
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>
>
>
> --
> --
> TheDailyTube.com. Sign up and get the best new videos on the internet
> delivered fresh to your inbox.
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>
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Re: [T5.1] AJAX Form Validation
Posted by Josh Canfield <jo...@thedailytube.com>.
Your example code works fine and the exception you provide makes it
look like you're in a loop?
> Caused by: java.lang.NullPointerException
> at
> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
That line from the code:
// We assume that if an encoder is available when we rendered,
that one will be available
// when the form is submitted.
Object restoredValue = encoder.toValue(clientValue);
Makes me think that you aren't getting an encoder?
Can you provide a simple and complete example that breaks?
Josh
On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <le...@grokers.net> wrote:
>
> Okay, I have some more information...
>
> When I click on the submit button, after the validation error, I see this in
> the log:
>
> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request failed
> with uncaught exception:
> org.apache.tapestry5.runtime.ComponentEventException
> org.apache.tapestry5.runtime.ComponentEventException [at
> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
> at
> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
> at
> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
> at
> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
> at
> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
> at
> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
> at
> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
> at
> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
> at
> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
> at
> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
> at
> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
> at $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
> at $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
> at
> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
> at
> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
> at
> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
> at
> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
> at
> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
> at
> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
> at
> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
> at
> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
> at
> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
> at
> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
> at
> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
> at
> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
> at
> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
> at
> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
> at
> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
> at
> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
> at
> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
> at
> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
> at
> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
> at
> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
> at
> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
> at
> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
> at
> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
> at
> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
> at
> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
> at java.lang.Thread.run(Thread.java:637)
> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at
> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
> at
> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
> at
> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
> at
> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
> at
> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
> at
> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
> at
> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
> at
> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
> at org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
> at
> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
> ... 52 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
> at
> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
> at
> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
> at
> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
> at
> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
> ... 62 more
>
>
> I would really appreciate some help understanding why this is broken.
>
> Thanks,
>
> Levi
>
>
> xfile80303 wrote:
>>
>> Hello all,
>>
>> I'm seing some interesting behavior I hope you can help me sort out.
>>
>> I have a form which I would like to display an error message (custom)
>> should the form validation fail. I'd like to do this via AJAX since the
>> contents of the form are created via AJAX and refreshing the page to
>> display this error message will lose this context.
>>
>> So, I have something like this:
>>
>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>> visible="${errorVisible}">
>> No items have been selected.
>> </t:zone>
>>
>> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
>> <form t:id="parts" t:zone="nothingSelectedZone">
>> <input type="button" t:type="submit" value="Do It"/>
>> </form>
>> </t:zone>
>>
>> void onValidateFormFromParts()
>> {
>> if (isValid())
>> {
>> _parts.recordError("No items selected.");
>> }
>> else
>> {
>> _parts.clearErrors();
>> }
>> errorVisible = _parts.getHasErrors();
>> }
>>
>> Object onSuccessFromParts()
>> {
>> return otherPage;
>> }
>>
>> Object onFailureFromParts()
>> {
>> return nothingSelectedZone.getBody();
>> }
>>
>> If there's no error with validation, the success method gets called fine,
>> and I am redirected to the otherPage.
>> If there is an error with validation, the nothingSelectedZone is updated
>> and the error message is displayed.
>> However, if, after a validation error I try to re-submit the form, nothing
>> happens at all. I've put breakpoints in my debugger on these three
>> methods and they don't get hit in this case. It's as if the form submit
>> is not taking place after the initial validation error.
>>
>> I'd love some input.
>>
>> Thanks,
>>
>> Levi
>>
>>
>
> --
> View this message in context: http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
> Sent from the Tapestry Users mailing list archive at Nabble.com.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
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Re: [T5.1] AJAX Form Validation
Posted by xfile80303 <le...@grokers.net>.
Okay, I have some more information...
When I click on the submit button, after the validation error, I see this in
the log:
ERROR [http-8080-5: RequestExceptionHandler]: Processing of request failed
with uncaught exception:
org.apache.tapestry5.runtime.ComponentEventException
org.apache.tapestry5.runtime.ComponentEventException [at
classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
at
org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
at
$ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
at
org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
at
$ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
at
org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
at
$ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
at
$ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
at
org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
at
$ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
at
org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
at $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
at $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
at
org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
at
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
at
$RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
at
org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
at
$RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
at
org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
at
$RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
at
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
at
$RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
at
com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
at
$RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
at
$RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
at
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
at
$RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
at
$RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
at
org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
at
org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
at
$HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
at
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
at
$HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
at
$HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
at
org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
at
$HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
at
$HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
at
org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Thread.java:637)
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at
classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
at
org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
at
org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
at
org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
at
org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
at
org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
at
org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
at
org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
at org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
at
org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
... 52 more
Caused by: java.lang.NullPointerException
at
org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
at
org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
at
org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
at
org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
at
org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
... 62 more
I would really appreciate some help understanding why this is broken.
Thanks,
Levi
xfile80303 wrote:
>
> Hello all,
>
> I'm seing some interesting behavior I hope you can help me sort out.
>
> I have a form which I would like to display an error message (custom)
> should the form validation fail. I'd like to do this via AJAX since the
> contents of the form are created via AJAX and refreshing the page to
> display this error message will lose this context.
>
> So, I have something like this:
>
> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
> visible="${errorVisible}">
> No items have been selected.
> </t:zone>
>
> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
> <form t:id="parts" t:zone="nothingSelectedZone">
> <input type="button" t:type="submit" value="Do It"/>
> </form>
> </t:zone>
>
> void onValidateFormFromParts()
> {
> if (isValid())
> {
> _parts.recordError("No items selected.");
> }
> else
> {
> _parts.clearErrors();
> }
> errorVisible = _parts.getHasErrors();
> }
>
> Object onSuccessFromParts()
> {
> return otherPage;
> }
>
> Object onFailureFromParts()
> {
> return nothingSelectedZone.getBody();
> }
>
> If there's no error with validation, the success method gets called fine,
> and I am redirected to the otherPage.
> If there is an error with validation, the nothingSelectedZone is updated
> and the error message is displayed.
> However, if, after a validation error I try to re-submit the form, nothing
> happens at all. I've put breakpoints in my debugger on these three
> methods and they don't get hit in this case. It's as if the form submit
> is not taking place after the initial validation error.
>
> I'd love some input.
>
> Thanks,
>
> Levi
>
>
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