• Rekain

• February 22, 2017 at 2:58 am

That’s exactly what I’m looking for – thanks.

But is it possible to combine two or more fields?

So if Field A has value ‘x’ and Field B value ‘y’, there must not be another combination of these two fields with these values.

My code looks like this, but it doesn’t work:

add_filter('acf/validate_value/name=strasse', 'validate_lien_video_filter', 10, 4);
function validate_lien_video_filter($valid, $value, $field, $input) {
    $post_id_field_key = 'field_58ac5c77d3d6e';
  if (!$valid || $value == '' || !isset($_POST['acf'][$post_id_field_key])) {
    return $valid;
  }
    // change the field key below to the field key for your 
    // hide_post_id_field field
    $post_id = $_POST['acf'][$post_id_field_key];
  global $post; 
  $id = $post->ID;
  $plz = get_field('plz', $id);
  $location = get_field('ort', $id);
  $args = array(
    'post__not_in' => array($post_id), // do not check this post
    'meta_query' => array(
      'relation' => 'AND',
      array(
        'key' => 'strasse',
        'value' => $value
      ),
      array(
        'key' => 'plz',
        'value' => $plz
      ),
      array(
        'key' => 'ort',
        'value' => $location
      )
    )
  );
  $query = new WP_Query($args);
  if (count($query->posts)) {
    // found at least one post that
    // already has $value
    $valid = 'There is already a post using this video';
  }
  return $valid;
}

Do you have a hint for me to solve this problem? Thank you so much! Really great support!