/**
  * trigger function.
  *
  * @access public
  * @return void
  */
 function trigger($user_id = 0, $course_id = 0)
 {
     global $woothemes_sensei, $sensei_email_data;
     // Get learner user object
     $this->user = new WP_User($user_id);
     // Get passed status
     $passed = __('passed', 'woothemes-sensei');
     if (!WooThemes_Sensei_Utils::sensei_user_passed_course($course_id, $user_id)) {
         $passed = __('failed', 'woothemes-sensei');
     }
     // Construct data array
     $sensei_email_data = apply_filters('sensei_email_data', array('template' => $this->template, 'heading' => $this->heading, 'user_id' => $user_id, 'course_id' => $course_id, 'passed' => $passed), $this->template);
     // Set recipient (learner)
     $this->recipient = stripslashes($this->user->user_email);
     // Send mail
     $woothemes_sensei->emails->send($this->recipient, $this->subject, $woothemes_sensei->emails->get_content($this->template));
 }