Re: Dynamic forward in tiles

[Mike Foody]

I have a similar question.  I would like to insert at runtime multiple 
instances of the same layout and set a property at that time.  I didn't 
see a way to do this via the documentation and so extended the TilesTool 
with the following code.  Is there something I've missed?  If not is the 
code below a reasonable way to do this?

Thank you,

Mike

public class TilesTool extends org.apache.velocity.tools.struts.TilesTool {
  
   public String get(Object obj)
   {
       if (obj instanceof ComponentDefinition)
       {
           try
           {
               return processDefinition((ComponentDefinition)obj);
           }
           catch (Exception e)
           {
               Velocity.error("Exception while rendering 
ComponentDefinition" + e.getMessage());
           }
       }
       return super.get(obj);
   }
  
   public ComponentDefinition getDefinition(String name)
   {
       ComponentDefinition definition = null;
       try
       {
           definition = TilesUtil.getDefinition(name, this.request, 
this.application);
       }
       catch (DefinitionsFactoryException dfe)
       {
          
       }
       return definition;
   }
  
  
}

Pedro Salgado wrote:

 Below is a reply sent to this mailing list about something very similar to
what you are looking for.
 Hope it helps,

Pedro Salgado

Hi Robert..

I guess you could achieve the same using the controllerClass attribute and
building your class.. For instance, I have this definition in the
tiles-defs.xml file:
---
  <definition name=".layout"
              path="/common/layout.jsp"
   controllerClass='com.dars.XTileAction'>
    <put name="title"       value="Encabezado primario"/>
    <put name="leftside"    value="/common/leftside.jsp"/>
    <put name="rightside"   value="/common/rightside.jsp"/>
    <put name="header"      value="/common/header.jsp"/>
    <put name="footer"      value="/common/footer.jsp"/>
    <put name="body"        value="/common/body.jsp"/>
  </definition>
---
 And I have this controllerClass
---
package com.dars;
import org.apache.struts.tiles.actions.TilesAction;
import org.apache.struts.tiles.ComponentContext;
import org.apache.struts.tiles.Controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.io.IOException;
public class XTileAction extends TilesAction implements Controller{
   public void perform(ComponentContext tilesctx,
                       HttpServletRequest request,
                       HttpServletResponse response,
                       ServletContext servctx)
                       throws ServletException, IOException{
/* GetAttributes */
            String titulo= (String)tilesctx.getAttribute("title");
            String derecha= (String)tilesctx.getAttribute("rightside");
/* GetAttributes */
            System.out.println("  Titulo: "+titulo);
            System.out.println(" Derecha: "+derecha);
/* SetAttributes */
          tilesctx.putAttribute("title", "Titulo nuevo de esta vaina..");
          tilesctx.putAttribute("rightside", "/common/footer.jsp");
/* SetAttributes */
   }
}
---
You can change the values of those attributes at runtime. I prefer to do
it using this method.
Atte.
Domingo A. Rodriguez S.
--- Robert Taylor <[EMAIL PROTECTED]> escribió: > Greetings, I have a
tiles definition in my tiles-defs.xml similar to
 

below:

<definition name="search" extends="layout">
   <put name="heading" value="{0}Search" type="string" />
   <put name="content" value="/search.jsp" type="page" />
 </definition>
which I would like to be able to modify the "heading" value such that
at runtime I could substitute a value for {0}.
For example, it would be ideal to use a JSTL type of syntax such as:

<definition name="search" extends="layout">
   <put name="heading" value="${param.myValue}Search" type="string" />
   <put name="content" value="/search.jsp" type="page" />
 </definition>
but this does not work.



robert

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On 24/03/2004 18:14, "Mariano García González"
<[EMAIL PROTECTED]> wrote:
 

Hi all,

I am newbie using tiles, so maybe this question is too easy for you.

I want to use a tile definition in which, one of the attribute values is
dynamic. It is something like this:
<definition name="tracebox.def.encoderconfig" extends="tracebox.def.menu">
<put name="title" value="encoderconfig" />
<put name="body" value="DYNAMIC CONTENT" />
</definition>
I want to use a dynamic url in body attribute, depending of a bean
attribute.
I hope you understand me. Could you help me?

Thanks,
Mariano.
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