Cross-field Validation within data table

richyclarke Jul 12, 2011 10:11 AM

Hi,
First time post, so go easy on me.
I am using Seam 3 faces module with Richfaces 4, JSF2, Seam 3 under JBoss AS 6.

I have a form which displays a richfaces rich:dataTable component (although I guess my question would relate to any ui:repeat component). The table lists a selectOneListBox and an inputText field in each row.

I would like to use Seam's s:validateForm tag and us a custom Validator to check each row to ensure the text field is a valid entry for the selection in the selectOneListBox. For example if the selectOneListBox has 'Passport' selected, then the user should enter a passport number in the text field, and if the user select 'Driving License' then the user should enter the driving license number etc.

I have other validation on the form working fine using a custom validator implementing javax.faces.validator.Validator, and injected InputElements.

I am wondering how to perform validation across these 2 fields.
Any suggestions most welcome.
Rich

1. Re: Cross-field Validation within data table

bleathem Jul 12, 2011 12:53 PM (in response to richyclarke)

The Seam Faces cross-field validator works by injecting a component into your validator. This might not be well suited to validating components repeated in a UIData component.

Since you are using RichFaces, have a look at the graph validator, it might be better suited to this:
RichFaces showcase | Graph validator
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2. Re: Cross-field Validation within data table

richyclarke Jul 12, 2011 4:51 PM (in response to richyclarke)

Brian,
Thanks for the pointer.

I have used the Richfaces Graph Validator and I'm now able to validate each row successfully.

There is one gotcha though, for anyone reading this. There is a known issue with Graph validator and iterable objects. Since the Richfaces Graph Validator creates a clone of the object to validate, it can only resolve the cloned object itself and not any nested composite components (which I had).

The issue is discussed here..

http://community.jboss.org/thread/168295
JIRA RF-11082

Thanks to Alexander Smirnov for a workaround.
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