How to address an aspect from a template

rdifrango — Wed, 07 Jan 2009 21:05:21 GMT

I have created a custom aspect called department that has 1 attribute of departmentName, how do I get access to this value from a Freemarker template:<#if c.hasAspect("demo:department")?exists><departmentName>${c.properties["demo:department"][0]}</departmentName><#else><de

Re: How to address an aspect from a template

cleseach — Thu, 08 Jan 2009 11:43:36 GMT

You should try :

${c.properties["demo:departmentName"]}‍

Regards,
Charles Le Seac'h

Re: How to address an aspect from a template

rdifrango — Thu, 08 Jan 2009 14:40:52 GMT

Yeah, I tried that as well:


<#if c.hasAspect("demo:department")?exists>
   <departmentName>${c.properties["demo:departmentName"]?string?replace("&", "&amp;")}</departmentName>
    <#else>
    <departmentName/>
    </#if>
‍‍‍‍‍‍‍

And here was the response:


Expression c.properties["demo:departmentName"] is undefined on line 58, column 27 in org/demo/dmbrowse.get.xml.ftl.
The problematic instruction:
———-
==> ${c.properties["demo:departmentName"]?string?replace("&", "&amp;")} [on line 58, column 25 in org/demo/dmbrowse.get.xml.ftl]
 in user-directive nodeInfo [on line 91, column 9 in org/demo/dmbrowse.get.xml.ftl]
———-

Java backtrace for programmers:
———-
freemarker.core.InvalidReferenceException: Expression c.properties["demo:departmentName"] is undefined on line 58, column 27 in org/demo/dmbrowse.get.xml.ftl.
   at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
‍‍‍‍‍‍‍‍‍‍‍‍‍

The bizarre this is that if I dump all the properties by interation over them using the following as an example:

http://wiki.alfresco.com/wiki/FreeMarker_Template_Cookbook#Document_Properties_Example

The property does display ok, here is the dump of those:


<properties>
      <property>

             <name>{http://www.alfresco.org/model/content/1.0}description</name>
             <value></value>
       </property>
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}content</name>
             <value>org.alfresco.repo.template.BaseContentNode$TemplateContentData@d72be</value>
       </property>

      <property>
             <name>{http://www.alfresco.org/model/system/1.0}store-protocol</name>
             <value>workspace</value>
       </property>
      <property>
             <name>{http://www.alfresco.org/model/system/1.0}node-uuid</name>
             <value>e2243099-90e0-4945-bc89-afd2cba3f052</value>

       </property>
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}created</name>
             <value>Jan 7, 2009</value>
       </property>
      [color=#FF0000]<property>
             <name>{http://www.demo.org/model/content/1.0}departmentName</name>

             <value>IT &amp; Help Desk</value>
       </property>[/color]
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}title</name>
             <value>DCP_4963.JPG</value>
       </property>

      <property>
             <name>{http://www.alfresco.org/model/system/1.0}node-dbid</name>
             <value>524</value>
       </property>
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}author</name>
             <value></value>

       </property>
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}modifier</name>
             <value>admin</value>
       </property>
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}modified</name>

             <value>Jan 7, 2009</value>
       </property>
      <property>
             <name>{http://www.alfresco.org/model/system/1.0}store-identifier</name>
             <value>SpacesStore</value>
       </property>
      <property>

             <name>{http://www.alfresco.org/model/content/1.0}creator</name>
             <value>admin</value>
       </property>
      <property>
             <name>{http://www.alfresco.org/model/content/1.0}name</name>
             <value>DCP_4963.JPG</value>
       </property>

 </properties>
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So I did also try:


<#if c.hasAspect("demo:department")?exists>
   <departmentName>${c.properties["{http://www.demo.org/model/content/1.0}departmentName']?string?replace("&", "&amp;")}</departmentName>
    <#else>
       <departmentName/>
    </#if>
‍‍‍‍‍‍‍

And that did not work either.

Re: How to address an aspect from a template

mikeh — Thu, 08 Jan 2009 16:19:53 GMT

I think the problem lies in your <#if c.hasAspect("demo:department")?exists> statement - it's not doing what you expect it to.

The ?exists directive (actually now deprecated to just ??) tests for null. The hasAspect() function will always return true or false, so your exists check will always return true. Therefore you'll get the error if you iterate over a node that doesn't actually have the aspect.

Mike

Re: How to address an aspect from a template

rdifrango — Thu, 08 Jan 2009 16:28:41 GMT

Mike,

That did the trick, I now have the following:


<#if c.properties["demo:departmentName"]?exists>
   <departmentName>${c.properties["demo:departmentName"]?string?replace("&", "&amp;")}</departmentName>
<#else>
   <departmentName/>
</#if>
‍‍‍‍‍‍‍

And it works like a champ.

Ron

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