Home php教程 php手册 权限控制的一个思路

权限控制的一个思路

Jun 13, 2016 am 11:30 AM
mvc url Ideas us control database Permissions module of structure surface access pass

数据库表结构

<span CREATE</span> <span TABLE</span><span  `NewTable` (
    `id`  </span><span int</span>(<span 11</span>) <span NOT</span> <span NULL</span><span  AUTO_INCREMENT,
    `title`  </span><span varchar</span>(<span 255</span>) <span NOT</span> <span NULL</span><span ,
    `menu_id`  </span><span int</span>(<span 11</span>) <span NOT</span> <span NULL</span><span ,
    `module`  </span><span varchar</span>(<span 50</span>) <span NOT</span> <span NULL</span><span ,
    `class`  </span><span varchar</span>(<span 50</span>) <span NOT</span> <span NULL</span><span ,
    `method`  </span><span varchar</span>(<span 50</span>) <span NOT</span> <span NULL</span><span PRIMARY</span> <span KEY</span><span  (`id`)
);</span>
Copy after login

假定我们使用了MVC的结构,并通过url访问对应的模块及类和函数。

表中第一行表示一个操作,title表示操作名,menu_id表示属于哪一个菜单选项,module表示模块名(没有可以略过),class表示类名,method表示函数名

此外我们还需要一个用户组的表,大致如下:

其中access_list中保存的当前用户组所拥有的权限ID(对应上个权限表中的ID)

当然我们还需要一个用户表来对应用户组表

group_id表示的第用户所对应的用户组

当我们访问一个url的时候,比如:

http://testApp.test.com/index.php/module/testModule/testClass/testAction

通过路由分析,我们得到相应的数据:

模块->testModule

类->testClass

函数->testAction

通过三个参数,我们查找权限表中的数据,得到一个唯一的id值。

然后对比用户组中access_list中的数据,如果数据中包括有这个id,那么当前用户拥有当前操作的权限,反之没有权限。

 

那么我们如何来控制菜单选项,当用户有权限时才显示呢?

因为在权限表中的每个操作都对应有一个menu_id,即菜单选项。我们通过查找当前用户所属于的用户组信息,得到他所拥有的权限操作ID,再通过ID取得他所属于的菜单选项,这样就得到了当前用户所拥有的菜单权限。

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