Messing, Elad wrote:
Hi all
I tried looking for a "definition" text on the preferred way
of performing a Form level validation.
What I mean is that I need to perform validation that is
relevant to the Form -not to specific widget. I.E. - I have a form
with 2 widgets, and I need to check that either 1 of them has a value
in it.
So - I know I can have a validation in one of the widgets, and
in it write some javascript to check the other as well, and then
output the error to a "fi:validation-errors" tag - to show it in a
central place.
But this seems like a work around rather than a real plan..
You can add a <fd:validation> on any widget, including a form. But not
every widget can hold validation errors, as not every widget has a
visual representation.
So validation on non-visual widgets should set validation errors on one
of their child widgets. Another option if there's no suitable widget to
attach the error to is to add the error text to a <fd:message> widget.
For more details, see the javadocs of
o.a.c.forms.validation.WidgetValidator and form1.xml in the samples: the
"contacts" repeater has a validator that checks row uniqueness and sets
an error on the duplicate rows.
A second and related question will be - In my form with 2
widgets, each one of them has its own validation. So - they are not
required, but in case the user enters something into them, It should
be validated. After this validation, I will need to have the "Form
Level" validation I mentioned above.
That should occur automatically.
Hope this helps,
Sylvain
--
Sylvain Wallez Anyware Technologies
http://apache.org/~sylvain http://anyware-tech.com
Apache Software Foundation Member Research & Technology Director
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