topic Re: Executing Web Scripts at Render time in Alfresco Archive

Executing Web Scripts at Render time

tara_b — Fri, 21 May 2010 02:46:02 GMT

Hey,I am using Alfresco's WCM Web Forms to receive input from users and render HTML using Freemarker. My question is how do I take advantage of Web Scripts to render dynamic information at render time?I have a Web Form that asks the user to input a title and a document path, and the form renders a d

Re: Executing Web Scripts at Render time

tara_b — Tue, 25 May 2010 01:25:19 GMT

Hi everyone,

Just wanted to update my progress on this issue:

Instead of trying to call my web script from my Freemarker file, I changed my Freemarker to directly access the Alfresco objects (bypassing the need for a web script at all). I tried some of the examples in the Freemarker Template cookbook http://wiki.alfresco.com/wiki/FreeMarker_Template_Cookbook, but I can't get access to the Alfresco objects through Freemarker as in the examples.

So for example, I've set up a web form with the following xsd and ftl:

test.xsd

<?xml version="1.0" encoding="UTF-8"?>
    
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:si="http://www.alfresco.org/alfresco/simple"
           targetNamespace="http://www.alfresco.org/alfresco/simple"
           elementFormDefault="qualified">

  <xs:element name="simple">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="string" type="xs:normalizedString"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

test.ftl

<#ftl ns_prefixes={"D":"http://www.alfresco.org/alfresco/simple",
                "alf":"http://www.alfresco.org"}>

<html>
   <body>
   
    <#– from example cookbook –>
    <b>Company Home Space:</b> ${companyhome.properties.name}
    
    
   <#– Table of the Spaces in my Home Folder –>
   <#– Shows the large 32x32 pixel icon, and generates an external access servlet URL to the space –>
   <table>
      <b>One</b>
         <#list companyhome.children as child>
            <b>Two</b>
            <#if child.isContainer>
               <tr>
                   <b>Three</b>
                   <td><img src="${url.context}${child.icon32}"></td>
                   <#assign ref=child.nodeRef>
                   <#assign workspace=ref[0..ref?index_of("://")-1]>
                   <#assign storenode=ref[ref?index_of("://")+3..]>
                   <td><a href="${url.context}/navigate/showSpaceDetails/${workspace}/${storenode}"><b>${child.properties.name}</b></a> (${child.children?size})</td>
               </tr>
            </#if>
         </#list>
   </table>
  </body>
</html>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I don't seem to have access to the Alfresco objects, like the examples do. The ${companyhome.properties.name} gives an error. If i remove it, the list of the company home children outputs nothing. I thought this could be an access issue due to the fact i've saved the web form in the Data Dictionary > Web Scripts folder rather than in the classpath, but I tried the latter and the result is the same.

Does anyone have any suggestions?

Thanks!

Re: Executing Web Scripts at Render time

esource — Thu, 27 May 2010 08:42:12 GMT

Hi Tara,

I'm having a similar issue. Can't seem to access 'space' in my freemarker template.

 
<table>
 <#list space.children as child>
    <#if child.isDocument>
       <tr><td>${child.properties.name}</td></tr>
       <#if child.mimetype = "text/plain">
          <tr><td style='padding-left:16px'>${child.content}</td></tr>
       <#elseif child.mimetype = "image/jpeg">
          <tr><td style='padding-left:16px'><img width=100 height=65 src="/alfresco${child.url}"><td></tr>
       </#if>
    </#if>
 </#list>
 </table>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍

returns error :

Expression space is undefined

Re: Executing Web Scripts at Render time

tara_b — Tue, 01 Jun 2010 07:31:31 GMT

Hi,

Well, i havent worked out how to run web scripts from rendering templates, but I found out why i couldnt reference the Alfresco model. Only a subset of objects are available for WCM rendering templates:

http://wiki.alfresco.com/wiki/WCM_Forms_Rendering#Variables_and_Functions_exposed_to_Rendering_Engine

Re: Executing Web Scripts at Render time

nwt — Thu, 30 Sep 2010 13:03:05 GMT

Just wondering if anyone has discovered if it's possible to call a WebScript from within the WCM rendering process?