Thanks for all the comments. I'm implementing the conditional validation using a custom form processing method as suggested by Andrea.
It's implemented as a form and behavior subclass. The overridden Form#process() first visits all form components and executes a special method on the behavior. The behavior then calls validate() on the source field and sets the required flag of the target component based on the converted input value. The call to validate() is needed in order to have the converted input value set. Best regards, Bob > You have to use the input or converted input of the field. See > > https://cwiki.apache.org/WICKET/conditional-validation.html > > for inspirations. > > Sven > > "Schlärmann, Bob" <bob.schlarm...@logica.com> schrieb: > > >Thanks for your reply, > > > >> Argh, confused setVisible() with setRequired, my bad ;-) > >> But nevertheless: call setRequiered(condition) in onConfigure(). > > > >I've tried this but if I am correct isRequired() gets called before > onConfigure() during the request cycle (at least this is the behaviour I see > during debugging). > > > >The problem is that the user is then able to submit the form without filling > in the required field if validation completely succeeds at once. Also the > required fields "lag" behind one request cycle. > > > > > >> > >> -Tom > >> > >> > >> Thomas Götz wrote: > >> > >> > Yes, you can also push the state instead of pulling it, which besides is > >> preferrable in terms of efficiency (as onConfigure() is only called once > per > >> request whereas isVisible() is potentially called many time): > >> > > >> > TextField<String> textField = new TextField<String>("textField") { > >> > @Override > >> > protected void onConfigure() { > >> > super.onConfigure(); > >> > setVisible(condition); > >> > } > >> > }; > >> > > >> > You can also call textField.setVisible(...) in the Page's or Panel's > >> onConfigure(), but then you need a reference to the textField (property of > the > >> page or panel). Or - if possible - you can group your FormComponents into a > >> WebMarkupContainer an set the visibility there. > >> > > >> > -Tom > >> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > >> For additional commands, e-mail: users-h...@wicket.apache.org > >> > > > > > >Think green - keep it on the screen. > > > >This e-mail and any attachment is for authorised use by the intended > recipient(s) only. It may contain proprietary material, confidential > information and/or be subject to legal privilege. It should not be copied, > disclosed to, retained or used by, any other party. If you are not an intended > recipient then please promptly delete this e-mail and any attachment and all > copies and inform the sender. Thank you. > > > > > > > >--------------------------------------------------------------------- > >To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > >For additional commands, e-mail: users-h...@wicket.apache.org > > Think green - keep it on the screen. This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you.
