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yii2 modal弹窗之ActiveForm ajax表单异步验证,yii2activeform
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yii2 modal弹窗之ActiveForm ajax表单异步验证,yii2activeform

Jul 06, 2016 pm 02:25 PM
ajax

yii2 modal弹窗之ActiveForm ajax表单异步验证,yii2activeform

作者:白狼 出处:http://www.manks.top/yii2_modal_activeform_ajax.html 本文版权归作者,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。

前面我们讲述了yii2中如何使用modal以及yii2 gridview列表内更新操作如何使用modal的问题,本以为modal要告一段落可以开始新的话题了,但是实际问题往往超乎想像,这不modal弹窗提交的表单说是怎么验证的问题又出来了,又出来了!

该问题的实质其实与modal的关系倒不大,其问题的核心在于ActiveForm的异步验证上,解决了首要矛盾,我们本篇文章的问题也就迎刃而解了。顺便再叨唠一句,modal确实没啥好说了。后面若是有我再把话改回来。

yii2中,ActiveForm默认做了客户端验证,但是表单的提交,却不是无刷新的。也就是常常看到的表单提交后页面会刷新。如果想要开启无刷新的模式,只需要在ActiveForm开始开启enableAjaxValidation即可,像下面这样

<?php $form = ActiveForm::begin([
        'id' => 'form-id',
        'enableAjaxValidation' => true,
        'validationUrl' => Url::toRoute(['validate-form']),
    ]
); ?>
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注意哦,id和enableAjaxValidation一个都不能少。

关于validateUrl我们做一个说明。如果你不设置该参数,该地址默认是你当前路由,而又恰巧你当前路由就是表单form的action,你会很好奇的发现,当表单项input失去焦点的时候,你对数据的修改已经提交到后端进行了处理了?这往往不是我们想要的,此时就需要给validateUrl设置一个路由地址,其所要请求的操作的意义就在于异步做验证!我们看具体实现:

//表单提交操作,基本上不需要做改动
if ($model->load(Yii::$app->request->post()) && $model->save()) {
        return $this->redirect(['index']);
    }
}
return $this->render('create', [
    'model' => $model,
]);

// @see http://www.manks.top/yii2_modal_activeform_ajax.html
// 看主要的验证操作,该操作是表单字段失去焦点时异步验证,同时如果直接提交表单,也会先执行该操作进行验证
public function actionValidateForm () {
    Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
    $model = new Model();  
    $model->load(Yii::$app->request->post());  
    return \yii\widgets\ActiveForm::validate($model);  
}
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如此一来就简单的实现了yii2异步无刷新表单验证了!

本期主题篇幅短小但内容精湛,希望对你有所帮助!

[考虑目前国内网站大部分采集文章十分频繁,更有甚者不注明原文出处,原作者更希望看客们查看原文,以防有任何问题不能更新所有文章,避免误导!]

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