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From "Domingo A. Rodriguez S." <>
Subject Re: [Tiles] Populating Tiles definition attribute at runtime
Date Mon, 29 Dec 2003 19:18:36 GMT

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" 
     <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"/>
  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;

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.

Domingo A. Rodriguez S.

 --- Robert Taylor <> 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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