code: def view(self, rec):
          '''
          view the post.
          '''
          out_json = {
              'uid': rec.uid,
              'time_update': rec.time_update,
              'title': rec.title,
              'cnt_html': tornado.escape.xhtml_unescape(rec.cnt_html),
  
          }
          self.write(json.dumps(out_json)f view(self, rec):
          '''
          view the post.
          '''
          out_json = {
              'uid': rec.uid,
              'time_update': rec.time_update,
              'title': rec.title,
              'cnt_html': tornado.escape.xhtml_unescape(rec.cnt_html),
  
          }
          self.write(json.dumps(out_json))
docs: view the post.