Reply To: Required field based on input other fields

• k-Dushi

• March 2, 2019 at 1:47 am

Hi John, this is great! Thank you!

Now I need to add the other conditions (Description, Regular Price, etc.). And it needs to be ‘and/or’. Would the code become something like this?

add_filter('acf/validate_value/key=field_deal1title', 'custom_validate_title', 20, 4);
function custom_validate_title($valid, $value, $field, $input) {
  // title is required if field_deal1dealdiscount has a value
  if (!empty($_POST['acf']['field_deal1dealdiscount'])) {
    // the other field has a value
    // check value of this field
  }
  // title is required if field_deal1description has a value
  elseif (!empty($_POST['acf']['field_deal1description'])) {
    // the other field has a value
    // check value of this field
    if (empty($value)) {
      $valid = 'This field is required because you have added a value to some other field';
    }
  }
  return $valid;
}