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https://issues.apache.org/jira/browse/WICKET-4620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400632#comment-13400632
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Sven Meier commented on WICKET-4620:
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>You mention there not being a 5th row. Are you perhaps referring to the fact
>that
>Wicket doesn't usually populate the tables before processing a form post?
Yes, more correctly: Wicket populates repeaters for rendering only. They stay
in the session (if not stateless) so they can receive callback via Ajax or
standard requests.
> my StatelessDataTable class ... preparing the table ... before the form gets
> processed
> (currently in onInitialize()).
Aha, that's not how we do things normally in Wicket.
> that was quite hard to figure out.
Should give you a hint that it's not the 'usual' way ;).
Wicket doesn't have a 'rewind' step as Tapestry has. If the component isn't in
the session there's no way to trigger it with a request.
If you want to keep your table (and its containing page) stateless, you should
use Bookmarkable links with page parameters.
> Ability to choose the child ID for repeating views and the row ID for
> DataTable
> -------------------------------------------------------------------------------
>
> Key: WICKET-4620
> URL: https://issues.apache.org/jira/browse/WICKET-4620
> Project: Wicket
> Issue Type: New Feature
> Components: wicket
> Reporter: Trejkaz
>
> We are extensively using stateless behaviour in our application.
> Because our pages are stateless, we can't rely on the IDs for rows being the
> same between two visits to the same page - something might have happened to
> shift the rows up or down such as another user inserting or removing rows.
> Because of this, I would like to use the ID of our actual model objects as
> the child ID, but there are two barriers to achieving this:
> 1. Even though newChildId() in RepeatingView is public, it isn't passed the
> model object so I can't derive the ID from the model object.
> 2. Even though I could extend DataGridView, I can't customise my DataTable
> subclass to return the subclass because it's being constructed in the
> constructor.
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