Reply To: Avoid duplicate content on repeater field

• Venkat Dev

• October 24, 2019 at 3:47 am

Hi, I have used the below code to avoid the duplicate entry on repeater field, But it is not working to me, could you help me to resolve the issue.

Thanks

function unique_repeater_sub_field($valid, $value, $field, $input) {
  if (!$valid) {
    return $valid;
  }
  
  // get list of array indexes from $input
  // [ <= this fixes my IDE, it has problems with unmatched brackets
  preg_match_all('/\[([^\]]+)\]/', $input, $matches);
  if (!count($matches[1])) {
    // this should actually never happen
    return $valid;
  }  
  $matches = $matches[1];
  
  // walk the acf input to find the repeater and cur  rent row      
  $array = $_POST['acf'];
  
  $repeater_key = false;
  $repeater_value = false;
  $row_key = false;
  $row_value = false;   
  $field_key = false;
  $field_value = false;
  
  for ($i=0; $i<count($matches); $i++) {
    if (isset($array[$matches[$i]])) {
      $repeater_key = $row_key;
      $repeater_value = $row_value;
      $row_key = $field_key;
      $row_value = $field_value;
      $field_key = $matches[$i];
      $field_value = $array[$matches[$i]];   
      if ($field_key == $field['<strong>field_5731ff201fa2e</strong>']) {
        break;
      }
      $array = $array[$matches[$i]];
    }   
  }
  
  if (!$repeater_key) {
    // this should not happen, but better safe than sorry
    return $valid;
  }
  
  // look for duplicate values in the repeater
  foreach ($repeater_value as $index => $row) {
    if ($index != $row_key && $row[$field_key] == $value) {
      // this is a different row with the same value
      $valid = 'this value is not unique';
      break;
    }
  }
        
  return $valid;
}
     

add_filter('acf/validate_value/key='.$field_key, 'unique_repeater_sub_field', 20, 4);