public function insert()
 {
     $content = new ContentModel();
     $result = $content->create();
     if (!$result) {
         $this->assign("jumpUrl", "__URL__/index");
         $this->error($content->getError());
     } else {
         $content->{$userid} == Cookie::get('userid');
         $content->add();
         $this->assign("jumpUrl", "__URL__/index");
         $this->success("添加成功!");
     }
 }