Yii2.0注册验证model与view方法调用

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视图signup.php代码：

<?php use yii\helpers\Html; use yii\bootstrap\ActiveForm; /* @var $this yii\web\View */ /* @var $form yii\bootstrap\ActiveForm */ /* @var $model \frontend\models\SignupForm */ $this->title = '注册'; $this->params['breadcrumbs'][] = $this->title; ?> <div class="site-signup">
    <h1><?= Html::encode($this->title) ?></h1>

    <p>Please fill out the following fields to signup:</p>

    <div class="row">
        <div class="col-lg-5">
            <?php $form = ActiveForm::begin([
                'id' => 'form-signup',
                'enableAjaxValidation' => true,
                'enableClientValidation' => true,
            ]); ?>
                
                <?= $form->field($model, 'username') ?>
                <?= $form->field($model, 'email') ?>
                <?= $form->field($model, 'password')->passwordInput() ?>
                <?= $form->field($model, 'password_compare')->passwordInput() ?>
                
                <div class="form-group">
                    <?= Html::submitButton('Signup', ['class' => 'btn btn-primary', 'name' => 'signup-button']) ?>
                </div>
                
            <?php ActiveForm::end(); ?>
        </div>
    </div>
</div> 

控制器SiteController.php

public function actionSignup() { $model = new SignupForm(); $model->load($_POST); if (Yii::$app->request->isAjax) {
            Yii::$app->response->format = \yii\web\Response::FORMAT_JSON; return \yii\bootstrap\ActiveForm::validate($model);
        } if ($model->load(Yii::$app->request->post())) { if ($user = $model->signup()) { if (Yii::$app->getUser()->login($user)) { return $this->goHome();
                }
            }
        } return $this->render('signup', [ 'model' => $model,
        ]);
    }

模型SignupForm.php

use common\models\User; use yii\base\Model; use Yii; /**
 * Signup form
 */ class SignupForm extends Model { public $username; public $email; public $password; public $password_compare; /**
     * @inheritdoc */ public function rules() { return [
            ['username', 'filter', 'filter' => 'trim'],
            ['username', 'required'],
            ['username', 'unique', 'targetClass' => '\common\models\User', 'message' => '用户名已存在.'],
            ['username', 'string', 'min' => 2, 'max' => 255],

            ['email', 'filter', 'filter' => 'trim'],
            ['email', 'required'],
            ['email', 'email'],
            ['email', 'unique', 'targetClass' => '\common\models\User', 'message' => '邮箱名已存在.'],

            [['password', 'password_compare'], 'required'],
            [['password', 'password_compare'], 'string', 'min' => 6, 'max' => 16, 'message' => '{attribute}是6-16位数字或字母'],
            ['password_compare', 'compare', 'compareAttribute' => 'password', 'message' => '两次密码不一致'],
        ];
    } /**
     * Signs user up.
     *
     * @return User|null the saved model or null if saving fails
     */ public function signup() { if ($this->validate()) { $user = new User(); $user->username = $this->username; $user->email = $this->email; $user->setPassword($this->password); $user->generateAuthKey(); if ($user->save()) { return $user;
            }
        } return null;
    }
}