Need help about node.assocs and ftl

[nunut]

Hi everyone,
I really need your help. I'm working on web script (javascript) and i need to render content association
Here is the association in my contentModel.xml :

<associations>
            <association name="customRImage">
               <title>Press Release Image</title>
               <source>
                  <mandatory>false</mandatory>
                  <many>true</many>
               </source>
               <target>
                  <class>cm:content</class>
                  <mandatory>false</mandatory>
                  <many>false</many>
               </target>
            </association>
            <association name="customRFiles">
               <title>Press Release Files</title>
               <source>
                  <mandatory>false</mandatory>
                  <many>true</many>
               </source>
               <target>
                  <class>cm:content</class>
                  <mandatory>false</mandatory>
                  <many>true</many>
               </target>
            </association>
         </associations>

This is my javascript code :

item.assocs = node.assocs["customRFiles"];

This how i render it with ftl :

   <#list data.items as item>
      {
         "assoc": "${item.assocs}"
                }

Here are the erros :

14:52:06,353 User:admin ERROR [freemarker.runtime] Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence

Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence
The problematic instruction:
———-
==> ${item.modifiedBy} escaped ${jsonUtils.encodeJSONString(item.modifiedBy)} [on line 20, column 40 in org/alfresco/slingshot/search/search.get.json.ftl]
———-

Java backtrace for programmers:
———-
freemarker.core.NonStringException: Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence
   at freemarker.core.Expression.getStringValue(Expression.java:126)
   at freemarker.core.Expression.getStringValue(Expression.java:93)
   at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
   at freemarker.core.Environment.visit(Environment.java:417)
   at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.EscapeBlock.accept(EscapeBlock.java:84)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.Environment.process(Environment.java:190)
   at freemarker.template.Template.process(Template.java:237)
   at org.alfresco.repo.template.FreeMarkerProcessor.process(FreeMarkerProcessor.java:197)
   at org.springframework.extensions.webscripts.AbstractWebScript.renderTemplate(AbstractWebScript.java:589)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.renderFormatTemplate(DeclarativeWebScript.java:267)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:147)
   at org.alfresco.repo.web.scripts.RepositoryContainer$2.execute(RepositoryContainer.java:377)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:381)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:436)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:466)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:304)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:333)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:189)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:118)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:58)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
   at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
   at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
   at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
   at java.lang.Thread.run(Thread.java:619)
14:52:06,364  ERROR [extensions.webscripts.AbstractRuntime] Exception from executeScript - redirecting to status template error: 09020001 Wrapped Exception (with status template): 09020000 Error during processing of the template 'Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence'. Please contact your system administrator.
org.springframework.extensions.webscripts.WebScriptException: 09020001 Wrapped Exception (with status template): 09020000 Error during processing of the template 'Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence'. Please contact your system administrator.
   at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:758)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:171)
   at org.alfresco.repo.web.scripts.RepositoryContainer$2.execute(RepositoryContainer.java:377)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:381)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:436)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:466)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:304)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:333)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:189)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:118)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:58)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
   at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
   at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
   at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
   at java.lang.Thread.run(Thread.java:619)
Caused by: org.alfresco.service.cmr.repository.TemplateException: 09020000 Error during processing of the template 'Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence'. Please contact your system administrator.
   at org.alfresco.repo.template.FreeMarkerProcessor.process(FreeMarkerProcessor.java:201)
   at org.springframework.extensions.webscripts.AbstractWebScript.renderTemplate(AbstractWebScript.java:589)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.renderFormatTemplate(DeclarativeWebScript.java:267)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:147)
   … 24 more
Caused by: freemarker.core.NonStringException: Error on line 2, column 15 in org/alfresco/slingshot/search/search.get.json.ftl
Expecting a string, date or number here, Expression jsonUtils.encodeJSONString(x) is instead a freemarker.template.SimpleSequence
   at freemarker.core.Expression.getStringValue(Expression.java:126)
   at freemarker.core.Expression.getStringValue(Expression.java:93)
   at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
   at freemarker.core.Environment.visit(Environment.java:417)
   at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.EscapeBlock.accept(EscapeBlock.java:84)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:210)
   at freemarker.core.Environment.process(Environment.java:190)
   at freemarker.template.Template.process(Template.java:237)
   at org.alfresco.repo.template.FreeMarkerProcessor.process(FreeMarkerProcessor.java:197)
   … 27 more


Can anyone explain briefly why this error happen please?What is the proper way to get content association?I have been working on this for two weeks and still don't have any clue


Thanx



Nunut

[kbrady]

FreeMarker does not automatically map json objects directly to freemarker objects - you'll need to map them specifically in your ftl file i.e. iterate through each element and map the contents.

the following sample code will map each item in the data object to a new "associations" object that is available in the ftl

"associations":
   [
      <#list data.items as item>
      {
         "nodeRef": "${item.assoc.noderef}"
      }<#if item_has_next>,</#if>
      </#list>
   ]
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