Yii中处理前后台登录新方法
我一开始的做法是在后台登录时设置一个isadmin的session,然后再前台登录时注销这个session,这样做只能辨别是前台登录还是后台登录,但做不到前后台一起登录,也即前台登录了后台就退出了,后台登录了前台就退出了。出现这种原因的根本原因是我们使用了同一个Cwebuser实例,不能同时设置前后台session,要解决这个问题就要将前后台使用不同的Cwebuser实例登录。下面是我的做法,首先看protected->config->main.php里对前台user(Cwebuser)的配置:
- '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
- ),
在你用Gii生成一个admin(即后台模块名称)模块时,会在module->admin下生成一个AdminModule.php文件,该类继承了CWebModule类,下面给出这个文件的代码,关键之处就在该文件,望大家仔细研究:
- <?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.");
- $publicPages=array(
- 'default/login',
- 'default/error',
- );
- if(Yii::app()->user->isGuest && !in_array($route,$publicPages))
- Yii::app()->user->loginRequired();
- else
- return true;
- }
- return false;
- }
- protected function allowIp($ip)
- {
- if(empty($this->ipFilters))
- return true;
- foreach($this->ipFilters as $filter)
- {
- if($filter==='*' || $filter===$ip || (($pos=strpos($filter,'*'))!==false && !strncmp($ip,$filter,$pos)))
- return true;
- }
- return false;
- }
- }
- ?>
AdminModule 的init()方法就是给后台配置另外的登录实例,让前后台使用不同的CWebUser,并设置后台session前缀,以便与前台session区别开来(他们同事存在$_SESSION这个数组里,你可以打印出来看看)。
这样就已经做到了前后台登录分离开了,但是此时你退出的话你就会发现前后台一起退出了。于是我找到了logout()这个方法,发现他有一个参数$destroySession=true,原来如此,如果你只是logout()的话那就会将session全部注销,加一个false参数的话就只会注销当前登录实例的session了,这也就是为什么要设置前后台session前缀的原因了,下面我们看看设置了false参数的logout方法是如何注销session的:
- /**
- * 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]);
- }
- }
看到没,就是利用匹配前缀的去注销的。
到此,我们就可以做到前后台登录分离,退出分离了。这样才更像一个应用,是吧?嘿嘿…
差点忘了说明一下:
- 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
不懂的仔细看一下刚才前后台CWebUser的配置。
WebUser.php代码:
- <?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, $duration);
- }
- }
- ?>
AdminWebUser.php代码
- <?php
- class AdminWebUser extends CWebUser
- {
- public function __get($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);
- }
- }
- ?>
前台UserIdentity.php代码
- <?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;
- }
- }
后台UserIdentity.php代码
- <?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;
- }
- }