這篇文章主要介紹了Yii中實現處理前後台登入的新方法,具體分析了Yii中前後台登入的新思路與相關實現技巧,需要的朋友可以參考下
本文實例講述了Yii中實作處理前後台登入的新方法。分享給大家供大家參考,具體如下:
因為最近在做一個專案涉及到前後台登入問題,我是把後台當作一個模組(Module)來處理的。我看很多人放兩個入口文件index.php和admin.php,然後分別指前台和後台。這種方法固然很好,可以將前後台完全分離,但我總覺得這種方式有點牽強,這和兩個應用啥區別?還不如做兩個App用一個framework更好。而Yii官方後台使用方法也是使用Module的方式。但是Moudle的方式有一個很頭痛的問題,就是在使用Cwebuser登入時會出現前後台一起登入一起登出的問題,這顯然是不合理的。我糾結了很久才找到下文即將介紹的方法,當然,很多也是參考別人的,自己稍作了改動。我一開始的做法是在後台登入時設定一個isadmin的session,然後再前台登入時註銷這個session,這樣做只能辨別是前台登入還是後台登錄,但做不到前後台一起登錄,也即前台登入了後台就登場了,後台登入了前台就退場了。造成這種原因的根本原因是我們使用了同一個Cwebuser實例,不能同時設定前後台session,要解決這個問題就要將前後台使用不同的Cwebuser實例登入。以下是我的做法,首先看protected->config->main.php裡對前台user(Cwebuser)的設定:
'user'=>array( 'class'=>'WebUser',//这个WebUser是继承CwebUser,稍后给出它的代码 'stateKeyPrefix'=>'member',//这个是设置前台session的前缀 'allowAutoLogin'=>true,//这里设置允许cookie保存登录信息,一边下次自动登录 ),
<?php class AdminModule extends CWebModule { public function init() { // this method is called when the module is being created // you may place code here to customize the module or the application parent::init();//这步是调用main.php里的配置文件 // import the module-level models and componen $this->setImport(array( 'admin.models.*', 'admin.components.*', )); //这里重写父类里的组件 //如有需要还可以参考API添加相应组件 Yii::app()->setComponents(array( 'errorHandler'=>array( 'class'=>'CErrorHandler', 'errorAction'=>'admin/default/error', ), 'admin'=>array( 'class'=>'AdminWebUser',//后台登录类实例 'stateKeyPrefix'=>'admin',//后台session前缀 'loginUrl'=>Yii::app()->createUrl('admin/default/login'), ), ), false); //下面这两行我一直没搞定啥意思,貌似CWebModule里也没generatorPaths属性和findGenerators()方法 //$this->generatorPaths[]='admin.generators'; //$this->controllerMap=$this->findGenerators(); } public function beforeControllerAction($controller, $action) { if(parent::beforeControllerAction($controller, $action)) { $route=$controller->id.'/'.$action->id; if(!$this->allowIp(Yii::app()->request->userHostAddress) && $route!=='default/error') throw new CHttpException(403,"You are not allowed to access this page."); $publicPages=array( 'default/login', 'default/error', ); if(Yii::app()->admin->isGuest && !in_array($route,$publicPages)) Yii::app()->admin->loginRequired(); else return true; } return false; } protected function allowIp($ip) { if(empty($this->ipFilters)) return true; foreach($this->ipFilters as $filter) { if($filter==='*' || $filter===$ip || (($pos=strpos($filter,'*'))!==false && !strncmp($ip,$filter,$pos))) return true; } return false; } } ?>
/** * Clears all user identity information from persistent storage. * This will remove the data stored via {@link setState}. */ public function clearStates() { $keys=array_keys($_SESSION); $prefix=$this->getStateKeyPrefix(); $n=strlen($prefix); foreach($keys as $key) { if(!strncmp($key,$prefix,$n)) unset($_SESSION[$key]); } }
Yii::app()->user //前台访问用户信息方法 Yii::app()->admin //后台访问用户信息方法
#附件1:WebUser.php程式碼:
<?php class WebUser extends CWebUser { public function __get($name) { if ($this->hasState('__userInfo')) { $user=$this->getState('__userInfo',array()); if (isset($user[$name])) { return $user[$name]; } } return parent::__get($name); } public function login($identity, $duration) { $this->setState('__userInfo', $identity->getUser()); parent::login($identity, $duration); } } ?>
附件2:AdminWebUser.php程式碼
<?php class AdminWebUser extends CWebUser { public function __get($name) { if ($this->hasState('__adminInfo')) { $user=$this->getState('__adminInfo',array()); if (isset($user[$name])) { return $user[$name]; } } return parent::__get($name); } public function login($identity, $duration) { $this->setState('__adminInfo', $identity->getUser()); parent::login($identity, $duration); } } ?>
附件3:前台UserIdentity.php程式碼
<?php /** * UserIdentity represents the data needed to identity a user. * It contains the authentication method that checks if the provided * data can identity the user. */ class UserIdentity extends CUserIdentity { /** * Authenticates a user. * The example implementation makes sure if the username and password * are both 'demo'. * In practical applications, this should be changed to authenticate * against some persistent user identity storage (e.g. database). * @return boolean whether authentication succeeds. */ public $user; public $_id; public $username; public function authenticate() { $this->errorCode=self::ERROR_PASSWORD_INVALID; $user=User::model()->find('username=:username',array(':username'=>$this->username)); if ($user) { $encrypted_passwd=trim($user->password); $inputpassword = trim(md5($this->password)); if($inputpassword===$encrypted_passwd) { $this->errorCode=self::ERROR_NONE; $this->setUser($user); $this->_id=$user->id; $this->username=$user->username; //if(isset(Yii::app()->user->thisisadmin)) // unset (Yii::app()->user->thisisadmin); } else { $this->errorCode=self::ERROR_PASSWORD_INVALID; } } else { $this->errorCode=self::ERROR_USERNAME_INVALID; } unset($user); return !$this->errorCode; } public function getUser() { return $this->user; } public function getId() { return $this->_id; } public function getUserName() { return $this->username; } public function setUser(CActiveRecord $user) { $this->user=$user->attributes; } }
##附件4:後台UserIdentity.php程式碼
<?php /** * UserIdentity represents the data needed to identity a user. * It contains the authentication method that checks if the provided * data can identity the user. */ class UserIdentity extends CUserIdentity { /** * Authenticates a user. * The example implementation makes sure if the username and password * are both 'demo'. * In practical applications, this should be changed to authenticate * against some persistent user identity storage (e.g. database). * @return boolean whether authentication succeeds. */ public $admin; public $_id; public $username; public function authenticate() { $this->errorCode=self::ERROR_PASSWORD_INVALID; $user=Staff::model()->find('username=:username',array(':username'=>$this->username)); if ($user) { $encrypted_passwd=trim($user->password); $inputpassword = trim(md5($this->password)); if($inputpassword===$encrypted_passwd) { $this->errorCode=self::ERROR_NONE; $this->setUser($user); $this->_id=$user->id; $this->username=$user->username; // Yii::app()->user->setState("thisisadmin", "true"); } else { $this->errorCode=self::ERROR_PASSWORD_INVALID; } } else { $this->errorCode=self::ERROR_USERNAME_INVALID; } unset($user); return !$this->errorCode; } public function getUser() { return $this->admin; } public function getId() { return $this->_id; } public function getUserName() { return $this->username; } public function setUser(CActiveRecord $user) { $this->admin=$user->attributes; } }
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