private function Get_Comment()
 {
     global $templates;
     $content = new ContentModel();
     $object = $content->Index_Comment();
     foreach ($object as $value) {
         $value->title = Tool::Sub_Str($value->title, 15);
         //对title进行截取
         $value->date = date('m-d', strtotime($value->date));
         //将时间格式转换一下
     }
     $templates->assgin('index_comment', $object);
 }