Reply To: Required field based on input other fields

• John Huebner

• March 2, 2019 at 4:25 am

In my first example I was missing a ) at then of if

add_filter('acf/validate_value/key=field_5c66e017f8359', 'custom_validate_title', 20, 4);
function custom_validate_title($valid, $value, $field, $input) {
  // title is required if other fields has a value
  if (!empty($_POST['acf']['field_5c6d43781bcb1']) ||
  if (!empty($_POST['acf']['field_5c66e094f835a']) ||
  if (!empty($_POST['acf']['field_5c66e0d4f835b']) ||
  if (!empty($_POST['acf']['field_5c66e130f835c']) ||
  if (!empty($_POST['acf']['field_5c703c1fd5851'])) {
    // the other fields has a value
    // check value of this field;
    if (empty($value)) {
      $valid = 'This field is required because you have added a value to some other field';
    }
  }
  return $valid;
}

if requires ==, also, no ; before the {

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;
}