本文实例讲述了Yii使用ajax验证显示错误messagebox的解决方法。分享给大家供大家参考。具体方法如下:
yii 自带了ajax 表单验证 这个可能有些朋友不知道了,但我今天在使用yii 自带的ajax 表单验证 时碰到一些问题,下面我来整理例子与大家参考一下。
在Yii中,可以利用ajax执行一个action,但是这个action有时候会有弹出错误讯息的需求,这时候的处理方式如下
基本思想
利用exception,比如:
代码如下:
throw new CHttpException(403, 'You are not authorized to perform this action.');
如果这个异常是 CHttpException 或者 YII_DEBUG 为 true的时候,错误消息可以通过CErrorHandler::errorAction来显示。在yiic默认生成的代码中,就是通过在 config/main.php 中加入如下代码来实现的
代码如下:
'errorHandler' => array(
'errorAction' => 'site/error',),
但是在Yii 1.1.9 以上,ajax请求抛出的exceptions是通过CApplication::displayException()来显示的。这使得我们无法定制消息的显示方式。
CGridView 删除请求抛出异常的话就是这个样子,(YII_DEBUG 为 true )
Yii 1.1.9 检查ajax请求的逻辑被移除了,所以现在即便是ajax的异常也是通过CErrorHandler::errorAction处理的。
这样ajax的消息就可以DIY了。
示例
通过如下代码
代码如下:
public function actionError(){
if($error=Yii::app()->errorHandler->error)
{
if(Yii::app()->request->isAjaxRequest)
echo $error['message'];
else
$this->render('error', $error);
}
}
后来又发现一个站长分享了一段代码
model:
代码如下:
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('content, author, email', 'required'),
array('author, email, url', 'length', 'max'=>128),
array('email','email'),
array('url','url'),
);
}
controller:
代码如下:
if(isset($_POST['ajax']) && $_POST['ajax']==='comment-form')
{
echo CActiveForm::validate($model);
Yii::app()->end();
}
view:
代码如下:
beginWidget('CActiveForm',array(
'id'=>'post-form', //这是表单id
'enableAjaxValidation'=>true, //这里一定写 true
)); ?>
echo $form->labelEx($model,'title');
?>
textField($model,'title',array('size'=>80,'maxlength'=>128));
?>
echo $form->error($model,'title');
?>
echo $form->labelEx($model,'content');
?>
echo CHtml::activeTextArea($model,'content',array('rows'=>10, 'cols'=>70));
?>
You may use Markdown syntax.
echo $form->error($model,'content');
?>
$this->endWidget();
?>
这样好像很好的解决了yii ajax显示问题。
希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。

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