Thank you Alex. It made my day.
Thanks and Regards,
Rahul Agarwal
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| Alessandro Vernet <avernet @orbeon.com> Sent by: orbeon-user-admin 12/14/2004 06:11 AM
|
To: [EMAIL PROTECTED] cc: Subject: Re: [orbeon-user] How to know which bind _expression_ made element invalid? |
Rahul Agarwal wrote:
> I know that when an element is validated (because there is a type,
> constraint, or required attribute on a bind _expression_ pointing to that
> element in the XForms model), the XForms engine adds an
> xxforms:valid="true|false" attribute to the element. I can access this
> attribute anywhere I have access to the XForms instance.
> My question is - Is there any way to know which particular
> validation/bind _expression_ (constraint, required or anything else) made
> the element invalid? My intention is to display appropriate
> <xforms:alert> message which makes user understand exactly what went
> wrong. User is not convinced to see all <xforms:alert> messages
> associated with an element while only one of the many possible
> constraints is failed.
Rahul,
Make sure you have an "id" attribute on your "bind" elements, for instance:
<xforms:bind id="a" nodeset="/instance" constraint="false()"/>
Then when validation fails, an "xxforms:invalid-bind-ids" attribute is
added in addition to the "xxforms:valid" attribute. The value of this
element is the id of the "bind" that failed. For instance:
<instance xxforms:invalid-bind-ids="a" xxforms:valid="false"/>
Alex
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