yii 验证码的使用和验证过程

如果要实现这个过程的话,需要几个步骤

第一步就是controller的操作

在要操作的控制器中添加如下代码:

public function actions(){
    return array( 
        // captcha action renders the CAPTCHA image displayed on the contact page
        'captcha'=>array(
                'class'=>'CCaptchaAction',
                'backColor'=>0xFFFFFF, 
                'maxLength'=>'8',       // 最多生成几个字符
                'minLength'=>'7',       // 最少生成几个字符
                'height'=>'40',
                'width'=>'230',
        ), 
    ); 
    
}

public function accessRules(){
	return array(
		array('allow',
            'actions'=>array('captcha'),
            'users'=>array('*'),
            ),
	);
}

第二就是view的操作

在要显示验证码的地方添加如下代码:

<div class="control-group">
    <?php $this->widget('CCaptcha',array(
        'showRefreshButton'=>true,
        'clickableImage'=>false,
        'buttonLabel'=>'刷新验证码',
        'imageOptions'=>array(
            'alt'=>'点击换图',
            'title'=>'点击换图',
            'style'=>'cursor:pointer',
            'padding'=>'10')
        )); ?>
</div>

第三就是LoginForm的操作

<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
	public $username;
	public $password;
	public $rememberMe;
    public $verifyCode;
	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that username and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules(){
		return array(
			// username and password are required
//			array('username, password', 'required'),
            array('username','required','message'=>'登录帐号不能为空'),
            array('password','required','message'=>'密码不能为空'),
            array('verifyCode','required','message'=>'验证码不能为空'),
            array('verifyCode','captcha', 'on'=>'login','allowEmpty'=>!Yii::app()->admin->isGuest),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'rememberMe'=>'下次记住我',
            'verifyCode' =>'验证码'
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate($attribute,$params)
	{
		if(!$this->hasErrors())
		{
			$this->_identity=new UserIdentity($this->username,$this->password);
			if(!$this->_identity->authenticate())
				$this->addError('password','帐号或密码错误.');
		}
	}

    public function validateVerifyCode($verifyCode){
        if(strtolower($this->verifyCode) === strtolower($verifyCode)){
            return true;
        }else{
            $this->addError('verifyCode','验证码错误.');
        }
	}
    
    
	/**
	 * Logs in the user using the given username and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login(){
		if($this->_identity===null){
			$this->_identity=new UserIdentity($this->username,$this->password);
			$this->_identity->authenticate();
		}
		if($this->_identity->errorCode===UserIdentity::ERROR_NONE){
			$duration=$this->rememberMe ? 3600*24*30 : 0; // 30 days
			Yii::app()->user->login($this->_identity,$duration);
			return true;
		}else{
            return false;
        }	
	}
}
第四步,实现验证的过程,那么具体的查看我自己的写的一个方式,在第三部已经写好了

validateVerifyCode就是啦,可以在controller里面调用

我的调用如下:

public function actionLogin(){
    $model=new LoginForm;
    if(isset($_POST['ajax']) && $_POST['ajax']==='login-form'){
		echo CActiveForm::validate($model);
		Yii::app()->end();
	}
    
    if(isset($_POST['LoginForm'])){
		$model->attributes=$_POST['LoginForm'];
		// validate user input and redirect to the previous page if valid
        if($model->validate() && 
                $model->validateVerifyCode($this->createAction('captcha')->getVerifyCode()) && 
                $model->login()){
            $this->redirect(CController::createUrl('default/index'));
        }
			
	}
    $this->render('login',array('model'=>$model));
}

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