/**
  * Adds a pseudo format, tp prevent 'LIKE' search for a foreign key.
  *
  * @param string $value
  * @param array  $field
  *
  * @return int|string
  */
 protected function formatSearchValue($value, array $field)
 {
     if ($field['type'] == 'foreignKey') {
         return (int) $value;
     }
     return parent::formatSearchValue($value, $field);
 }