[jira] Updated: (WW-2465) Dynamic trees in the dojo plugin causes a freemarker error if the child property returns null

["Rainer Hermanns (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/struts/browse/WW-2465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rainer Hermanns updated WW-2465:
--------------------------------

    Fix Version/s: 2.1.1

> Dynamic trees in the dojo plugin causes a freemarker error if the child property returns null
> ---------------------------------------------------------------------------------------------
>
>                 Key: WW-2465
>                 URL: https://issues.apache.org/struts/browse/WW-2465
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Plugin - Dojo Tags
>    Affects Versions: 2.1.1
>            Reporter: Al Sutton
>            Assignee: Rainer Hermanns
>             Fix For: 2.1.1
>
>         Attachments: dojo_dynamic_tree_null_children_fix.patch
>
>
> If the property specified in the childProperty for an s:tree returned a null the following freemarker error occurs;
> Expression stack.findValue(parameters.childCollectionProperty.toString()) is 
> undefined on line 24, column 8 in template/ajax/treenode-include.ftl.
> The problematic instruction:
> ----------
> ==> list stack.findValue(parameters.childCollectionProperty.toString()) as child [on line 24, column 1 in template/ajax/treenode-include.ftl]
>  in include "/${parameters.templateDir}/ajax/treenode-include.ftl" [on line 26, column 5 in template/ajax/treenode-include.ftl]
>  in include "/${parameters.templateDir}/ajax/treenode-include.ftl" [on line 26, column 5 in template/ajax/treenode-include.ftl]
>  in include "/${parameters.templateDir}/ajax/treenode-include.ftl" [on line 124, column 5 in template/ajax/tree.ftl]
> ----------
> The attached patch fixes this problem by using a empty list as the default if a null is returned.

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