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Posted to users@tiles.apache.org by Pauli Savolainen <sa...@gmail.com> on 2008/02/28 15:42:19 UTC
Struts 2 Tiles 2 Runtime composition
Hi,
I am attempting to change an existing tiles definition during an execution
of a Struts action. Example tiles definition:
<definition name="layout" template="/layout.jsp">
<put-attribute name="head" value="/head.jsp" />
<put-attribute name="body" value="/login.jsp" />
</definition>
In the action I want to choose a correct body value based on some
application specific rules. For example if I call: /user/1, the User
action's show method is executed and the body attribute's value would turn
into /user/show.jsp. This would prevent me from writing definitions for each
possible case.
Tile tutorial says I can get my hands on an attribute context (The class
TilesAttributeContext does not exist in my tiles plugin build). In the
action I do:
TilesAttributeContext attributeContext = container.startContext(request,
response);
attributeContext.setAttribute("body", "/user/show.jsp");
container.render("layout", request, response);
container.endContext(request, response);
I bet this is not the correct way to do it, because it seems that the tiles
definition overrides the value I insert here. Even if I do this in an
interceptor after the action result, the value is not changed.
I suppose there is no option in tiles to define definition with wildcards.
At least I did not find this option. I could point my action results
dynamically to a definition with wildcards.
<definition name="layout" template="/layout.jsp">
<put-attribute name="head" value="/head.jsp" />
<put-attribute name="body" value="/login.jsp" />
</definition>
<definition name="layout.*.*" extends="layout">
<put-attribute name="body" value="/{1}/{2}.jsp" />
</definition>
So my question is how would I achieve what am I try to do? Am I on the right
tracks and just missing something, or is this even possible?
I am using 2.1.1-SNAPSHOT builds struts-core and struts tiles-plugin.
Thank you
Pauli
Re: Struts 2 Tiles 2 Runtime composition
Posted by Antonio <an...@gmail.com>.
2008/11/12 stanlick <st...@gmail.com>:
>
> Antonio --
>
> I'm adding this comment here for complete navigability when others might
> have the same misunderstanding. So is the Tiles/2 example code:
>
> <tiles:insertDefinition name="test.definitionOne.messageThisIsAMessage" />
>
> where the dependencies are set/created?
Sorry the misunderstanding was mine :-D
Anyway the Struts 2 code you posted was OT in this case.
Antonio
Re: Struts 2 Tiles 2 Runtime composition
Posted by stanlick <st...@gmail.com>.
Antonio --
I'm adding this comment here for complete navigability when others might
have the same misunderstanding. So is the Tiles/2 example code:
<tiles:insertDefinition name="test.definitionOne.messageThisIsAMessage" />
where the dependencies are set/created?
Peace,
Scott
Antonio Petrelli-3 wrote:
>
> 2008/11/11 stanlick <st...@gmail.com>:
>> It appears that I am in the same boat you were awhile back! Given your
>> wildcard tiles definition layout.*.* , does the Struts 2 action mapping
>>
>> <action name="layout.*.*">
>> <result>layout.{1}.{2}</result>
>> </action>
>>
>> not substitute correctly?
>
> Same problem here, probably the Struts2/Tiles2 plugin does not
> set/create all the dependencies.
>
> Antonio
>
>
--
View this message in context: http://www.nabble.com/Struts-2-Tiles-2-Runtime-composition-tp15737832p20460034.html
Sent from the tiles users mailing list archive at Nabble.com.
Re: Struts 2 Tiles 2 Runtime composition
Posted by Antonio <an...@gmail.com>.
2008/11/11 stanlick <st...@gmail.com>:
> It appears that I am in the same boat you were awhile back! Given your
> wildcard tiles definition layout.*.* , does the Struts 2 action mapping
>
> <action name="layout.*.*">
> <result>layout.{1}.{2}</result>
> </action>
>
> not substitute correctly?
Same problem here, probably the Struts2/Tiles2 plugin does not
set/create all the dependencies.
Antonio
Re: Struts 2 Tiles 2 Runtime composition
Posted by stanlick <st...@gmail.com>.
Hey Pauli --
It appears that I am in the same boat you were awhile back! Given your
wildcard tiles definition layout.*.* , does the Struts 2 action mapping
<action name="layout.*.*">
<result>layout.{1}.{2}</result>
</action>
not substitute correctly?
Peace,
Scott
Pauli Savolainen wrote:
>
> Hi,
>
> I am attempting to change an existing tiles definition during an execution
> of a Struts action. Example tiles definition:
>
> <definition name="layout" template="/layout.jsp">
> <put-attribute name="head" value="/head.jsp" />
> <put-attribute name="body" value="/login.jsp" />
> </definition>
>
> In the action I want to choose a correct body value based on some
> application specific rules. For example if I call: /user/1, the User
> action's show method is executed and the body attribute's value would turn
> into /user/show.jsp. This would prevent me from writing definitions for
> each
> possible case.
>
> Tile tutorial says I can get my hands on an attribute context (The class
> TilesAttributeContext does not exist in my tiles plugin build). In the
> action I do:
>
> TilesAttributeContext attributeContext = container.startContext(request,
> response);
> attributeContext.setAttribute("body", "/user/show.jsp");
> container.render("layout", request, response);
> container.endContext(request, response);
>
> I bet this is not the correct way to do it, because it seems that the
> tiles
> definition overrides the value I insert here. Even if I do this in an
> interceptor after the action result, the value is not changed.
>
> I suppose there is no option in tiles to define definition with wildcards.
> At least I did not find this option. I could point my action results
> dynamically to a definition with wildcards.
>
> <definition name="layout" template="/layout.jsp">
> <put-attribute name="head" value="/head.jsp" />
> <put-attribute name="body" value="/login.jsp" />
> </definition>
>
> <definition name="layout.*.*" extends="layout">
> <put-attribute name="body" value="/{1}/{2}.jsp" />
> </definition>
>
> So my question is how would I achieve what am I try to do? Am I on the
> right
> tracks and just missing something, or is this even possible?
>
> I am using 2.1.1-SNAPSHOT builds struts-core and struts tiles-plugin.
>
> Thank you
>
> Pauli
>
>
--
View this message in context: http://www.nabble.com/Struts-2-Tiles-2-Runtime-composition-tp15737832p20447743.html
Sent from the tiles users mailing list archive at Nabble.com.
Re: Struts 2 Tiles 2 Runtime composition
Posted by VSG <sr...@gmail.com>.
Hi Pauli,
I am working on the same requirement. I have done some thing like this
<definition name="preparer" preparer="TestViewPreparer" >
<put-attribute name="title" value="Tiles tutorial homepage" />
<put-attribute name="header" value="/layouts/header.jsp" />
<put-attribute name="body" value=="???{nextPage}???" />
<put-attribute name="footer" value="/layouts/header.jsp" />
</definition>
In testViewPreparer
HttpServletRequest serReqObj =
(HttpServletRequest)tilesContext.getRequest();
ValueStack valuStack = ServletActionContext.getValueStack(serReqObj);
String nextPage = valuStack.findString("nextPage");
attributeContext.putAttribute("body",new Attribute(nextPage));
In jsp
<tiles:insertDefinition name="preparer.definition" />
here I am facing two problems
1. value stack is giving null value.
2.i hard code the nextPage value some how but after that the exception:-
java.lang.NullPointerException
at
org.apache.struts2.tiles.StrutsTilesRequestContext.dispatch(StrutsTilesRequestContext.java:82)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:417)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:368)
at
org.apache.tiles.jsp.taglib.InsertDefinitionTag.render(InsertDefinitionTag.java:63)
at
org.apache.tiles.jsp.taglib.RenderTagSupport.execute(RenderTagSupport.java:171)
at
org.apache.tiles.jsp.taglib.RoleSecurityTagSupport.doEndTag(RoleSecurityTagSupport.java:75)
at
org.apache.tiles.jsp.taglib.ContainerTagSupport.doEndTag(ContainerTagSupport.java:80)
at
org.apache.jsp.second_jsp._jspx_meth_tiles_005finsertDefinition_005f0(second_jsp.java:86)
at org.apache.jsp.second_jsp._jspService(second_jsp.java:59)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
know my question is it the correct way of doing the things.
can u help me out how u finshed the things.
VSG.
Pauli Savolainen wrote:
>
> Hi,
>
> I am attempting to change an existing tiles definition during an execution
> of a Struts action. Example tiles definition:
>
> <definition name="layout" template="/layout.jsp">
> <put-attribute name="head" value="/head.jsp" />
> <put-attribute name="body" value="/login.jsp" />
> </definition>
>
> In the action I want to choose a correct body value based on some
> application specific rules. For example if I call: /user/1, the User
> action's show method is executed and the body attribute's value would turn
> into /user/show.jsp. This would prevent me from writing definitions for
> each
> possible case.
>
> Tile tutorial says I can get my hands on an attribute context (The class
> TilesAttributeContext does not exist in my tiles plugin build). In the
> action I do:
>
> TilesAttributeContext attributeContext = container.startContext(request,
> response);
> attributeContext.setAttribute("body", "/user/show.jsp");
> container.render("layout", request, response);
> container.endContext(request, response);
>
> I bet this is not the correct way to do it, because it seems that the
> tiles
> definition overrides the value I insert here. Even if I do this in an
> interceptor after the action result, the value is not changed.
>
> I suppose there is no option in tiles to define definition with wildcards.
> At least I did not find this option. I could point my action results
> dynamically to a definition with wildcards.
>
> <definition name="layout" template="/layout.jsp">
> <put-attribute name="head" value="/head.jsp" />
> <put-attribute name="body" value="/login.jsp" />
> </definition>
>
> <definition name="layout.*.*" extends="layout">
> <put-attribute name="body" value="/{1}/{2}.jsp" />
> </definition>
>
> So my question is how would I achieve what am I try to do? Am I on the
> right
> tracks and just missing something, or is this even possible?
>
> I am using 2.1.1-SNAPSHOT builds struts-core and struts tiles-plugin.
>
> Thank you
>
> Pauli
>
>
--
View this message in context: http://www.nabble.com/Struts-2-Tiles-2-Runtime-composition-tp15737832p20949380.html
Sent from the tiles users mailing list archive at Nabble.com.
Re: Struts 2 Tiles 2 Runtime composition
Posted by Pauli Savolainen <sa...@gmail.com>.
2008/2/28, Antonio Petrelli <an...@gmail.com>:
> 2008/2/28, Pauli Savolainen <sa...@gmail.com>:
>
> > In the action I want to choose a correct body value based on some
> > application specific rules. For example if I call: /user/1, the User
> > action's show method is executed and the body attribute's value would turn
> > into /user/show.jsp. This would prevent me from writing definitions for each
> > possible case.
>
>
> You could use a ViewPreparer:
> http://tiles.apache.org/tutorial/advanced/preparer.html
> You can use the AttributeContext object passed as a parameter in the
> "execute" method and override the "body" attribute.
> To know the calling URL, look at the TilesRequestContext:
> http://tiles.apache.org/2.0/framework/apidocs/org/apache/tiles/context/TilesRequestContext.html
> The "getRequest" method returns the original HttpServletRequest.
>
> HTH
>
> Antonio
>
Hi,
Thank you very much. I got it working with a little tweaking. I
inspect the url in the view preparer and include a body content
according to it. Works nice.
Pauli
Re: Struts 2 Tiles 2 Runtime composition
Posted by Antonio Petrelli <an...@gmail.com>.
2008/2/28, Pauli Savolainen <sa...@gmail.com>:
> In the action I want to choose a correct body value based on some
> application specific rules. For example if I call: /user/1, the User
> action's show method is executed and the body attribute's value would turn
> into /user/show.jsp. This would prevent me from writing definitions for each
> possible case.
You could use a ViewPreparer:
http://tiles.apache.org/tutorial/advanced/preparer.html
You can use the AttributeContext object passed as a parameter in the
"execute" method and override the "body" attribute.
To know the calling URL, look at the TilesRequestContext:
http://tiles.apache.org/2.0/framework/apidocs/org/apache/tiles/context/TilesRequestContext.html
The "getRequest" method returns the original HttpServletRequest.
HTH
Antonio