Hi,
Try with Session.get().error(...) instead of component.error().
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Mon, Feb 29, 2016 at 5:28 PM, Patrick Davids <
patrick.dav...@nubologic.com> wrote:
> Hi all,
> is there any way to add a message when onBeforeRender() is called?
>
> I have a behavior for a special use-case which does some checks and
> provides feedback to the user when a check is unsuccessfull.
>
> But I get a
> org.apache.wicket.WicketRuntimeException: Cannot modify component
> hierarchy after render phase has started (page version cant change then
> anymore)
>
> I know this restriction... but I need this kind of check on render-time
> not on configure-time of the component due to visibility issues.
>
> If someone has an idea how to fake "onBeforeRender()" some how to get my
> feedback message... this would be great.
>
> Thanx and best regards
> Patrick
>
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