Reply To: Make fields required only on front-end form?

• MarcGuay

• July 3, 2023 at 11:58 am

I think I figured this out, it requires 2 filters and leverages the “acf_form” variable which is passed by the front-end form on validation.

1)

// Allow empty values in admin (verify acf_screen == acf_form because this is set in the frontend form but not the admin
// and both are technically is_admin() since the action takes place in the backend
add_filter('acf/validate_value/key=field_123', 'custom_vehicle_submission_required_fields', 10, 5);
function custom_vehicle_submission_required_fields($valid, $value, $field, $input) {
  
  if (is_admin() && acf_request_arg( '_acf_screen', false ) !== 'acf_form') {
    // valid is set to false if the value is empty, but allow 0 as a valid value
    if ( empty( $value ) && ! is_numeric( $value ) ) {
      $valid = true;
    }
  }
  return $valid;
}

2)

// Do not add the 'required' attribute on the field in the admin
add_filter('acf/prepare_field/key=field_123', 'custom_vehicle_submission_required_fields2');
function custom_vehicle_submission_required_fields2($field) {
  
  if (is_admin()) {
    $field['required'] = false;
  }
  return $field;
}