YII 数据库,模型,登录验证

//protected/config/main.php
//数据库连接设置
        'db'=>array(
            'connectionString' => 'mysql:host=localhost;dbname=blog',
            'emulatePrepare' => true,//PDO扩展
            'username' => 'root',
            'password' => 'xxxxxx',
            'charset' => 'utf8',
            'tablePrefix' => 'hd_', //定义表前缀,
            'enableParamLogging' => TRUE //开启调试信息的SQL语句具体值信息
            ),

这些属性可以到 framework/db/CDbConnection.php中查看

IndexController.php

<?php
class IndexController extends Controller{
    public function actionIndex(){
        $LoginForm = new LoginForm();
        if(isset($_POST['LoginForm'])){
            $LoginForm->attributes = $_POST['LoginForm'];
			if($LoginForm->validate() && $LoginForm->login()){
                exit('登陆成功,往下执行。。。。。');
            }
        }
        $this->render('index',array('LoginForm'=>$LoginForm));
    }
    /*
     * 数据库 测试
     */
    public function actionTest(){
        $userInfo = Admin::model()->find('username = :name',array(':name'=>'admin'));
        dump($userInfo->password);
    }
    /*
    * 验证码 
    * index.php?r=admin/index/captcha  通过URL可以直接访问到图片
     */
    public function actions(){
    	return array(
    		'captcha'=>array(
    			'class'=>'system.web.widgets.captcha.CCaptchaAction',
    			'height' => 25,
    			'width' => 80,
    			'minLength' => 4,
    			'maxLength' => 4
    			)
    		);
    }
}

 模板

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>后台首页</title>
</head>

<body>
<h1><center>后台首页</center></h1>
<?php $form = $this->beginWidget('CActiveForm') ?>
    用户名:<?php echo $form->textField($LoginForm,'username',array('id'=>'username')); ?><br/>
    密 码:<?php echo $form->passwordField($LoginForm,'password',array('id'=>'password')); ?><br/>
    验证码:<?php echo $form->textField($LoginForm,'captcha',array('id'=>'verify')); ?>
    <?php $this->widget('CCaptcha',array('showRefreshButton'=>false,'clickableImage'=>true,'imageOptions'=>array('alt'=>'点击换图','title'=>'点击换图','style'=>'cursor:pointer'))); ?>
    <br/>
    <input type="submit" value="登录"/>
<?php $this->endWidget() ?>
<div id="error">
    <h4><center> <?php echo $form->error($LoginForm,'username') ?> </center></h4>
    <h4><center> <?php echo $form->error($LoginForm,'password') ?> </center></h4>
    <h4><center> <?php echo $form->error($LoginForm,'captcha') ?> </center></h4>
</div>
</body>
</html>

 LoginForm.php

<?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 $captcha;

	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','required','message'=>'用户名不能为空'),
            array('password','required','message'=>'密码不能为空'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
			array('captcha','captcha','message'=>'验证码错误')
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'rememberMe'=>'Remember me next time',
		);
	}

	/**
	 * 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','用户名或密码错误');
		}
	}

	/**
	 * 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;
	}
}

Admin.php

class Admin extends CActiveRecord{
    public static function model($className = __CLASS__){
        return parent::model($className);
    }
    public function tableName(){
        return "{{admin}}";
    }
}
原文地址:https://www.cnblogs.com/mr-amazing/p/4699954.html