I have a meeting registration form that requires there be no duplicates of a combination of two fields, specifically meeting date and category, so that no 2 people from the same business category can register to attend the same meeting date. Is this possible? How do I do this, other than by creating a separate registration form for each event?
Thanks!
It is definitely possible, but not currently built-in to Gravity Forms. The No Duplicates option only applies to a single field at a time. However, this type of advanced validation can be done by writing custom validation using the gform_validation hook. There is a tutorial on the gform_validation hook here:
http://www.gravityhelp.com/documentation/page/Using_the_Gravity_Forms_%22gform_validation%22_Hook
If you are unable to develop a custom solution for your needs, there are a number of WordPress developers that could implement this for you.
