Multiple "input" within one Action?

["Zheng, Gang" <Gz...@3eti.com>]

I have a problem with the "input" attribute of the <action>.

I have a dummy action that takes care of the requests posted from a number
of JSPs. It's like a "wizard" type of scenario: input something on the first
page, then input some other stuff from the second page, etc. All of these
inputs are directed to the same action, and the action class will decide
which next page to forward to.

I use validate() within the dummyForm to do validation on the input fields.
Now, if validation fails, I want go back to the same page with an error
message displayed. I know struts will send me back to the page that is
defined by "input" attribute once validate() return an error. Since there is
only one "input" that I can specify for this action, how can I go back to
"dummy1.jsp" if data from "dummy1.jsp" fails the validation?

Here's the <action> element from struts-config.xml.

        <!-- dummy action -->
        <action path="/dummy"
                type="DummyAction"
                name="dummyForm"
                scope="session"
                input="/jsp/dummy0.jsp">
          <forward name="dummy0" path="/jsp/dummy0.jsp" redirect="true" />
          <forward name="dummy1" path="/jsp/dummy1.jsp" redirect="true" />
          <forward name="dummy2" path="/jsp/dummy2.jsp" redirect="true" />
        </action>

I am sure I can do it if I split the single action into individual actions
to handle each dummy page. But is there anyway that I can do it with the
single action?

Please point me to the right direction.

Thanks very much for any help.

- GZ

Re: Multiple "input" within one Action?

[Jeff Kyser <kt...@comcast.net>]

I can pass on some help recently provided by others, plus what I did.
You can either have a separate action mapping for each, if you
want to have the validation framework do all the work, or, you can
do what I finally ended up with:

	use all the validation rules, etc.

	but call validate() from your Action

	then, based on your current page and the button you
	pushed (back, next, done), send them to the correct page.

	actually, if they hit a 'back' button (not the browser's back button)
	you don't want to validate anyway.

Here's a snippet from my config file - /go2wizard has the input=
to get the initial tile loaded, and then everything else is handled by
the /wizard action.
	
         <action path="/go2wizard"
                 parameter="sandbox.wizard.page1"
                 validate="false"
                 name="wizardForm"
                 type="org.apache.struts.actions.ForwardAction">
         </action>

         <action path="/wizard"
                 type="torch.webapp.sandbox.action.WizardAction"
                 name="wizardForm"
                 scope="session"
                 validate="false">
             <forward name="failure"
                      path="/do/go2wizard">
             </forward>
             <forward name="page1"
                      path="sandbox.wizard.page1">
             </forward>
             <forward name="page2"
                      path="sandbox.wizard.page2">
             </forward>
             <forward name="done"
                      path="/do/wizard/success">
             </forward>
         </action>

HTH,

-jeff

On Thursday, March 6, 2003, at 03:05  PM, Zheng, Gang wrote:

> I have a problem with the "input" attribute of the <action>.
>
> I have a dummy action that takes care of the requests posted from a 
> number
> of JSPs. It's like a "wizard" type of scenario: input something on the 
> first
> page, then input some other stuff from the second page, etc. All of 
> these
> inputs are directed to the same action, and the action class will 
> decide
> which next page to forward to.
>
> I use validate() within the dummyForm to do validation on the input 
> fields.
> Now, if validation fails, I want go back to the same page with an error
> message displayed. I know struts will send me back to the page that is
> defined by "input" attribute once validate() return an error. Since 
> there is
> only one "input" that I can specify for this action, how can I go back 
> to
> "dummy1.jsp" if data from "dummy1.jsp" fails the validation?
>
> Here's the <action> element from struts-config.xml.
>
>         <!-- dummy action -->
>         <action path="/dummy"
>                 type="DummyAction"
>                 name="dummyForm"
>                 scope="session"
>                 input="/jsp/dummy0.jsp">
>           <forward name="dummy0" path="/jsp/dummy0.jsp" 
> redirect="true" />
>           <forward name="dummy1" path="/jsp/dummy1.jsp" 
> redirect="true" />
>           <forward name="dummy2" path="/jsp/dummy2.jsp" 
> redirect="true" />
>         </action>
>
> I am sure I can do it if I split the single action into individual 
> actions
> to handle each dummy page. But is there anyway that I can do it with 
> the
> single action?
>
> Please point me to the right direction.
>
> Thanks very much for any help.
>
> - GZ


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