获取模板继承中指定block块的HTML编译代码

用于AJAX 获取模板中需要变动的部分代码
可写在公共继承类,例如AdminBaseController.class.php 用于覆盖 Controller的display() 方法

    final protected function display($templateFile='',$charset='',$contentType='',$content='',$prefix=''){

        if(empty($templateFile)) $templateFile=ACTION_NAME;

        if(IS_AJAX){

            C('SHOW_PAGE_TRACE',false);

            //获取指定继承块模板

            $block=I('block','');

            if(!empty($block)){

                //获取模板文件路径

                $tpl_file=$this->view->parseTemplate($templateFile);

                //获取模板文件内容

                $tpl_content=file_get_contents($tpl_file);

                //匹配指定block内容

                $tpl_find=preg_match('/<block\sname=[\'"]'.$block.'[\'"]\s*?>(.*?)<\/block>/is',$tpl_content,$tpl_block);

                if($tpl_find){

                    //编译指定block内容

                    $tpl_html=$this->view->fetch($templateFile,$tpl_block[1]);

                    $this->ajaxReturn($tpl_html);

                }

            }


            $content = $this->view->fetch($templateFile);

            $this->ajaxReturn($content);

        }else{

            $this->view->display($templateFile);

        }

    }