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                注冊時不用提交就驗證用戶名、郵箱等是否已將存在,用Ajax實現 1.首先,先在Form表中開啟Ajax ... <?php $form = ActiveForm::begin(['enableAjaxValidation' => true]); ?> ... 2.其次,再_對應的_Controller加入一段Ajax驗證的代碼 ... if ($model->load(Yii::$app->request->post())) { if (Yii::$app->request->isAjax) { Yii::$app->response->format = Response::FORMAT_JSON; return ActiveForm::validate($model); } //ajax提交過來的會直接進行驗證 ... 3.最后,再對應的models里面增加驗證的rules ... ['username', 'unique', 'targetClass' => '\backend\models\User', 'message' => '用戶名已存在.'], //targetClass目標模型類(這個不能照抄,要結合你項目注冊新用戶時的模型類) ['email', 'unique', 'targetClass' => '\backend\models\User', 'message' => '郵箱已存在.'], ... 貌似三者缺一都會失效,網上的教材要么只給第二步,要么只提供第三步,著實讓新手有點困惑。 為此,小白我總結研究了下,希望可以幫助對此有困惑的人 首次發帖,希望對有需要的人有幫助,歡迎大神們指正 貌似三者缺一都會失效,網上的教材要么只給第二步,要么只提供第三步,著實讓新手有點困惑。 ![](https://box.kancloud.cn/6c00f8b86a66b2a216dbe34fa80702f8_425x496.png)
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