thinkphp 更新数据,该如何处理

    public function edit() {<br />
        $Form =M("release");<br />
        if ($vo = $Form->create()) {<br />
            $list = $Form->save();<br />
            if ($list !== false) {<br />
                $this->success('数据更新成功！');<br />
            } else {<br />
                $this->error("没有更新任何数据!");<br />
            }<br />
        } else {<br />
            $this->error($Form->getError());<br />
        }<br />
		$this->assign('Form',$Form);<br />
		dump($Form);<br />
		$this->display();<br />
	}<br />