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https://issues.apache.org/jira/browse/TAPESTRY-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12571035#action_12571035
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Ted Steen commented on TAPESTRY-2184:
-------------------------------------
@Davor Hrg, That was my solution also, but as you say, maybe it will misbehave
in other situations.
resources.createActionLink(...) seem to work between setupRender() and
cleanupRender().
> createActionLink cause exception when it is called in the page class, but
> works when it is called from the template.
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: TAPESTRY-2184
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2184
> Project: Tapestry
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.0.10
> Reporter: Angelo Chen
>
> createActionLink cause exception when it is called in the page class(see
> onActionFromDelete), but works when it is called from the template, this
> works in 5.0.6 and 7, but fails in 5.0.9 and 5.0.10, sample code and error
> follows:
> public class TestPage1 {
> @Inject
> private ComponentResources resources;
> private Object[] _objs;
> public Class onActivate(Object[] obj) { _objs = obj; return null; }
> public Object[] onPassivate() { return _objs;}
> Link onActionFromDelete(Long id) {
> String x = getTheLink(); // this fails with exception
> return null;
> }
> public String getTheLink() {
> Link l = resources.createActionLink("DeleteConfirm", false);
> return l.toURI();
> }
> public Object onDeleteConfirm(Long id) {
> return null;
> }
> }
> template:
> <body>
> <t:ActionLink t:id="Delete" context="1">Delete me</t:ActionLink><br />
> <p>My Link is : ${theLink}</p>
> </body>
> errors:
> java.lang.NullPointerException
> Stack trace
> *
> org.apache.tapestry.internal.services.LinkFactoryImpl.collectActivationContextForPage(LinkFactoryImpl.java:217)
> *
> org.apache.tapestry.internal.services.LinkFactoryImpl.createActionLink(LinkFactoryImpl.java:129)
> *
> org.apache.tapestry.internal.structure.PageImpl.createActionLink(PageImpl.java:156)
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