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https://issues.apache.org/jira/browse/TAP5-165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644347#action_12644347
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Howard M. Lewis Ship commented on TAP5-165:
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About your last example:  use the following: 

 void onActionFromSomeAction(EventContext context) {
      resources.triggerContextEvent("SomeComponentEvent",context,null);
  } 

> Components which use PrimaryKeyEncoder should be changed to use ValueEncoder, 
> and PrimaryKeyEncoder should be eliminated.
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: TAP5-165
>                 URL: https://issues.apache.org/jira/browse/TAP5-165
>             Project: Tapestry 5
>          Issue Type: Improvement
>    Affects Versions: 5.0.16
>         Environment: any
>            Reporter: Robert Zeigler
>            Priority: Minor
>
> While working on an application, I noticed that my objects were being 
> serialized "weird" into a form by the loop component.  I realized that I 
> hadn't provided the primary key encoder, and once I did things worked as 
> expected.  That got me to thinking that it would be nice if the Loop 
> component, and other components that rely on PrimaryKeyEncoders, could check 
> to see if there is an encoder available for the value-type, if none is 
> explicitly bound by the user.  That way, module-authors could provide 
> PrimaryKeyEncoders that makes things work "like magic". 
> For example, tapestry-hibernate could contribute PrimaryKeyEncoders for each 
> entity type so that the objects are automatically, and properly, encoded into 
> forms.

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