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;
}
}以上就是本文的全部內容，希望對大家的學習有幫助，更多相關內容請關注PHP中文網！
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