Reply To: Required field based on input other fields

• k-Dushi

• March 2, 2019 at 3:03 am

John, maybe you can help me one more time with a code for the Regular price which is only required when Deal or Discount (tickbox) its value is Discount. Maybe something like this?

add_filter('acf/validate_value/key=field_5c66e0d4f835b', 'custom_validate_deal1regularprice', 20, 4);
function custom_validate_deal1regularprice($valid, $value, $field, $input) {
  // Discounted price is required if other fields has a value
  if (!empty($_POST['acf']['field_5c6d43781bcb1'])); {
    // If the other fields has a value 1
    // Check value of this field;
    if ($value = 1 ) {
      $valid = 'This field is required because you have chosen for a deal with <strong>Discount</strong>. Either fill in a <strong>Regular price</strong> below or change your deal to a deal without discount.';
    }
  }
  return $valid;
}