Yii 框架 验证码 与 表单验证 操作

controller：

public function actions(){        return [            // captcha action renders the CAPTCHA image displayed on the contact page            'captcha'=>[                'class' => 'yii\captcha\CaptchaAction',                'backColor'=>0xFFFFFF,  //背景颜色                'minLength'=>6,  //最短为4位                'maxLength'=>6,   //是长为4位                'transparent'=>true,  //显示为透明                'testLimit'=>0,                'fixedVerifyCode' => YII_ENV_TEST ? 'test' : null,            ],        ];    }、

Model
    public $verifyCode;
 public function rules(){        return [            //账号、密码、确认密码、邮箱、验证码必须            [['username','password','password_rep','email','verifyCode'],'required'],            //账号只能是汉字/数字/下划线,不能包含空格            ['username','match','pattern'=>'/^[\x{4e00}-\x{9fa5}_a-zA-Z0-9]*$/'],            //用户名最大10位，最小3位            ['username','string','max'=>16,'min'=>2],            //用户名/邮箱唯一            ['username','unique','targetClass'=>'\backend\modules\pub\models\YiiUser','message'=>'账号已存在'],            ['email','unique','targetClass'=>'\backend\modules\pub\models\YiiUser','message'=>'邮箱已被绑定'],            //去除空格            [['username','email'],'trim'],            //密码最大16位，最小6位            ['password','string','max'=>16,'min'=>6],            //验证邮箱            ['email','email','message'=>'邮箱不规范'],            //验证两次密码是否一致            ['password_rep','compare','compareAttribute'=>'password','message'=>'两次密码不一致'],            //验证码            ['verifyCode', 'captcha','captchaAction'=>'pub/default/captcha'],        ];    }

页面Form部分代码

 <?= $form->field($model,'email')->textInput(['placeholder'=>'邮箱'])->label('邮箱')?>                    <?= $form->field($model, 'verifyCode')->label('验证码')->widget(Captcha::className(), [                        'options'=>['placeholder'=>'验证码'],                        'captchaAction' => 'default/captcha',                        'imageOptions'=>['style'=>'margin-top:-5px;',],                        'template' => '<div class="row"><div class="col-lg-6">{input}</div><div class="col-lg-6">{image}</div></div>',                    ]) ?>