Yii中srbac权限扩展模块工作原理与用法分析
本文实例讲述了Yii中srbac权限扩展模块工作原理与用法。分享给大家供大家参考,具体如下:
1. 设置权限规则表:可放在module模块配置文件里面
public function init() { //操作权限表,必须存在以下字段: //itemname角色名/ID, //type授权项目类型/1(任务)或者2(角色), //bizrule权限/逻辑运算表达式为false是有权限操作, //data数据/YII暂无利用 Yii::app()->authManager->itemTable = 'AuthItem'; //会员组-权限对应表,必须存在以下字段: //child子角色/ID, //parent父角色/ID,此表可循环执行,可多级继承 Yii::app()->authManager->itemChildTable = 'uthItemChild'; //会员-会员组对应表,会员组可直接为操作名称,必须存在以下字段: //itemname角色名/ID, //userid用户名/ID, //bizrule权限/逻辑运算表达式为false是有权限操作, //data数据/YII暂无利用 Yii::app()->authManager->assignmentTable = 'zd_mem_glog';
2. 实现规则,所在控制器继承基类SBaseController,原来为Controller
class ProductController extends SBaseController { ........ } class SBaseController extends Controller { ........ }
3. SBaseController继承基类Controller,前填加beforeAction,实现权限验证。
protected function beforeAction($action) { //载入模块分隔符 $del = Helper::findModule('srbac')->delimeter; //取得前模块名称 $mod = $this->module !== null ? $this->module->id . $del : ""; $contrArr = explode("/", $this->id); $contrArr[sizeof($contrArr) - 1] = ucfirst($contrArr[sizeof($contrArr) - 1]); $controller = implode(".", $contrArr); $controller = str_replace("/", ".", $this->id); // 生成静态页面 模块+分隔符+控制器(首字母大写)+方法(首字母大写)例: model-ControllerAction if(sizeof($contrArr)==1){ $controller = ucfirst($controller); } $access = $mod . $controller . ucfirst($this->action->id); //验证访问页面地址是否在总是允许列表里面,是返回有权限 if (in_array($access, $this->allowedAccess())) { return true; } //验证SRBAC有无安装,没在安装,返回的权限访问 if (!Yii::app()->getModule('srbac')->isInstalled()) { return true; } //验证SRBAC有无开启,没在开启,返回的权限访问 if (Yii::app()->getModule('srbac')->debug) { return true; } // 权限验证 if (!Yii::app()->user->checkAccess($access) || Yii::app()->user->isGuest) { $this->onUnauthorizedAccess(); } else { return true; } }
4. CDbAuthManager读取当前用户角色
public function getAuthAssignments($userId) { $rows=$this->db->createCommand() ->select() ->from($this->assignmentTable) ->where('userid=:userid', array(':userid'=>$userId)) ->queryAll(); $assignments=array(); foreach($rows as $row) { if(($data=@unserialize($row['data']))===false) $data=null; $assignments[$row['itemname']]=new CAuthAssignment($this,$row['itemname'],$row['userid'],$row['bizrule'],$data); } return $assignments; }
5. CDbAuthManager读取角色对应权限
public function getAuthItem($name) { $row=$this->db->createCommand() ->select() ->from($this->itemTable) ->where('name=:name', array(':name'=>$name)) ->queryRow(); if($row!==false) { if(($data=@unserialize($row['data']))===false) $data=null; return new CAuthItem($this,$row['name'],$row['type'],$row['description'],$row['bizrule'],$data); } else return null; }
6. CDbAuthManager读取权限对应操作
protected function checkAccessRecursive($itemName,$userId,$params,$assignments) { if(($item=$this->getAuthItem($itemName))===null) return false; Yii::trace('Checking permission "'.$item->getName().'"','system.web.auth.CDbAuthManager'); if(!isset($params['userId'])) $params['userId'] = $userId; if($this->executeBizRule($item->getBizRule(),$params,$item->getData())) { if(in_array($itemName,$this->defaultRoles)) return true; if(isset($assignments[$itemName])) { $assignment=$assignments[$itemName]; if($this->executeBizRule($assignment->getBizRule(),$params,$assignment->getData())) return true; } $parents=$this->db->createCommand() ->select('parent') ->from($this->itemChildTable) ->where('child=:name', array(':name'=>$itemName)) ->queryColumn(); foreach($parents as $parent) { if($this->checkAccessRecursive($parent,$userId,$params,$assignments)) return true; } } return false; }
7. CAuthManager验证权限
public function executeBizRule($bizRule,$params,$data) { return $bizRule==='' || $bizRule===null || ($this->showErrors ? eval($bizRule)!=0 : @eval($bizRule)!=0); }
8. 总是充许访问规则设置
更多关于Yii相关内容感兴趣的读者可查看本站专题:《Yii框架入门及常用技巧总结》、《php优秀开发框架总结》、《smarty模板入门基础教程》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。
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