Support › MB Frontend Submission › Require at least 1 field to be filled out to submit post
I have a form with 3 fields in it, and the user has to fill out at least one of them.
It can be any of the 3 fields.
(I would like to show them an error message).
The JS validation only helps you to validate one field itself. If you want to validate that at least one field has value, please try to use the form validation with PHP code. Read more on the documentation https://docs.metabox.io/extensions/mb-frontend-submission/#validation