In the form, validate that an element does not duplicate

crchaves

New Member
I need the "Coupon" field not to be repeated if the user tries to enter it again.

Is this possible?

fabrik1.png
 
Use the 'isuniquevalue' validation.

It's not part of the core, you'll have to either download the installable ZIP from our downloads section, or do a github update and "discover" in J!'s extension manager.

-- hugh
 
We are in need of some funding.
More details.

Thank you.

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