/**
  * Create a new comment on a post
  *
  * @return string
  */
 public function postComment()
 {
     try {
         //Must be an ajax request
         if (!$this->input->is_ajax_request()) {
             //Raise error
             throw new Exception('The request is not allowed', 422);
         }
         //User must be logged in
         if (!$this->auth->check()) {
             //Raise error
             throw new Exception('You must be logged in to proceed', 422);
         }
         //Set validation
         $this->form_validation->set_rules('post_id', 'Post Identifier', 'required|xss_clean');
         $this->form_validation->set_rules('comment', 'Comment', 'required|xss_clean');
         //Apply validation
         if ($this->form_validation->run() == false) {
             //Raise error
             throw new Exception('Missing parameters', '422');
         }
         //Create comment and return
         echo json_encode(['error' => false, 'commentRow' => $this->load->view('partials/_single-comment-row', ['comment' => $this->commentRepo->createComment($this->postRepo->getPost($this->input->post('post_id')), $this->input->post('comment'), $this->auth->user())], true)]);
     } catch (Exception $e) {
         //Unexpected error
         echo json_encode(['error' => true, 'message' => $e->getMessage()]);
     }
 }