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Display a Popup instead of an error-message at conversionError

Michael Darsow
Greenhorn

Joined: Mar 11, 2012
Posts: 4
Hi there,

i am pretty new to JSF and i am trying to display a formular which has a date-field to be filled by the user.

In my JSF-Page i am iterating over a list objects A, which has 3 String fields and 1 Date field.



When the Submit-Button is pressed, a red error-message appears on the screen. Instead I would like to display a popup with an errormessage when the user presses the submit-Button and the date-conversion fails.

Is there a way to achieve this?
Thank you in advance
Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16250
    
  21

Welcome to the JavaRanch, Michael!

Straight JSF doesn't have any sort of support for popup windows or dialogs. The closest that you could get would be a link with a "target" attribute, but that wouldn't work when an input fails validation.

One of the prime virtues of JSF, however, is that it does provide better support for validation error handling than most platforms. Just not as popups.

Basically, out of the box you can either collect all the messages for the page and display them in one place using the "h:messages" element or you can tag the individual controls with messages. Like so:



BTW, avoid using Listeners when something simpler and more POJO will suffice. You don't need a "buttonAction" listener here, just a simple action method.

Among my pet peeves in JSF are use of HTML tags instead of JSF tags and use of ui:repeat for tabular data, so I've taken some liberties here.


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