/**
  * @return array containing the wp ajax callback function at index 0 and the
  * arguments to be used (array of fields for the requested job) at index 1.
  */
 public function run()
 {
     try {
         return array('wp_send_json_success', $this->job_action_factory->field_contents($this->job_id)->run());
     } catch (Exception $e) {
         return array('wp_send_json_error', 0);
     }
 }