checking user input

[pebbels]

Hi guys,

when a user submits the save button

<tf:transitionButton transition="Update Date" value="Save"/>

I would like the system to compare the entered date with a process variable representing a date so a jpdl-buildin converter does not fit . The application is supposed to show an error message and not to submit the form.

How is it to implement?
Do I need an ActionHandler?
How to tell the application to stay at the form?

Thx for help,
Tina

[kukeltje]

when you want this kind of functionality, it is better to use plain jsf or better yet, use seam.

[pebbels]

Hi Ronald,
thanks for your answer.
In case of using jsf: I am looking for the mechanism to compare both values and first of all how to tell the application to stay at the form.

How is it possible?

Thx Tina

[kukeltje]

it's a pure jsf thing but I'll answer anyway... you just have to return an empty string as the value of your backingbean action method