Dont save post if sum of all repeater-fields are more than 100?

• buckdanny

• May 27, 2021 at 1:04 am

Hey,

I have a repeater with images. There is a subfield for the size. The size could be selected from a list like: 25, 50, 75…
How can I check if the sum of all this subfields is not more than 100(%)?

Thanks!

• John Huebner

• May 28, 2021 at 3:58 am

You need to and an acf/validate_value filter to the sub field, use the field key variant.

// field_XXXXXXX == your sub field key
add_filter('acf/validate_value/key=field_XXXXXXX', 'validate_repeater_sum', 20, 4);
function validate_repeater_sum($valid, $value, $field, $input_name) {
  // field_YYYYYYY == your repeater field key
  $repeater = $_POST['acf']['field_YYYYYYY'];
  $sum = 0;
  foreach ($repeater as $row) {
    $sum += intval($row['field_XXXXXXX']);
  }
  if ($sum > 100) {
    $valid = 'The sum of all '.$field['label'].' fields must not exceed 100';
  }
  return $valid;
}

• buckdanny

• May 30, 2021 at 5:35 am

thank you so much for your outstanding support!