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Posted to dev@tapestry.apache.org by "Howard M. Lewis Ship (JIRA)" <ta...@jakarta.apache.org> on 2005/11/11 20:14:04 UTC
[jira] Closed: (TAPESTRY-517) Using a FieldLabel component after the decorated form component causes the FieldLabel's id attribute to be wrong
[ http://issues.apache.org/jira/browse/TAPESTRY-517?page=all ]
Howard M. Lewis Ship closed TAPESTRY-517:
-----------------------------------------
Fix Version: 4.0
Resolution: Fixed
Add a prerender parameter which can be set to false when the FieldLabel comes after the field.
> Using a FieldLabel component after the decorated form component causes the FieldLabel's id attribute to be wrong
> ----------------------------------------------------------------------------------------------------------------
>
> Key: TAPESTRY-517
> URL: http://issues.apache.org/jira/browse/TAPESTRY-517
> Project: Tapestry
> Type: Bug
> Components: Framework
> Versions: 4.0
> Reporter: Jonas Maurus
> Assignee: Howard M. Lewis Ship
> Fix For: 4.0
> Attachments: AbstractFormComponent.clientid_fix.diff, AbstractFormComponent.clientid_fix_2.diff, AbstractFormComponent.clientid_fix_3.diff, AbstractFormComponent.clientid_fix_4.diff, AbstractFormComponent.clientid_fix_cvs_HEAD_20050825_1358.diff, TAPESTRY-517.clientid_fix.diff
>
> Quoting from TAPESTRY-409:
> <!-- page definition -->
> <component id="bookkeeperRCB" type="Checkbox">
> <binding name="selected" value="hasBookkeeperRole" />
> </component>
>
> <component id="adminRCB" type="Checkbox">
> <binding name="selected" value="hasAdministratorRole" />
> </component>
> <!-- page template -->
> <tr>
> <td><input jwcid="bookkeeperRCB" type="checkbox" value="Y" /></td>
> <td><label jwcid="@FieldLabel" for="bookkeeper"
> field="ognl:components.bookkeeperRCB" displayName="message:form.roles.bookkeeper">Bookkeeper</label></td>
> </tr>
> <tr>
> <td><input jwcid="adminRCB" type="checkbox" value="Y" /></td>
> <td><label jwcid="@FieldLabel" for="admin"
> field="ognl:components.adminRCB" displayName="message:form.roles.administrator">Administrator</label></td>
> </tr>
> yields:
> <tr>
> <td><input type="checkbox" name="bookkeeperRCB" id="bookkeeperRCB" value="Y"/></td>
> <td><label for="bookkeeperRCB$0">Bookkeeper</label></td>
> </tr>
> <tr>
> <td><input type="checkbox" name="adminRCB" checked="checked" id="adminRCB" value="Y"/></td>
> <td><label for="adminRCB$0">Administrator</label></td>
> </tr>
> as you can see the generated fieldnames ("bookkeeperRCB$0"...) are wrong. This always results in a stale-link exception.
> I tracked down the bug: FieldLabel calls prerenderField() which in turn causes an uniqueId to be allocated in AbstractFormComponent.renderIdAttribute. Everything works out when the FieldLabel precedes the form component it decorates. If it comes after the form component, IRequestCycle.getUniqueId() will already have stored an id for the component and return a new one.
> I'm not quite sure about the mechanics described above, as I don't fully understand FormSupportImpl yet, perhaps someone else can shed light on this.
> However, the allocated client id wasn't cached properly in AbstractFormComponent.renderIdAttribute. I'll attach a patch as soon as I've saved this bug report.
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