本文实例讲述了Laravel框架实现的rbac权限管理操作。分享给大家供大家参考，具体如下：

介绍：根据不同的权限，在菜单栏显示不同的功能，只对菜单进行了限制，若对路由也进行限制，请自行完善

1、建表（用户表、角色表、权限表、用户角色表、角色权限表）

CREATE TABLE IF NOT EXISTS mr_role(id int(11) PRIMARY KEY AUTO_INCREMENT COMMENT "自增id",name varchar(30) NOT NULL COMMENT "角色名")ENGINE=innodb DEFAULT CHARSET=utf8 COMMENT="角色表";CREATE TABLE IF NOT EXISTS mr_privilege(id int(11) PRIMARY KEY AUTO_INCREMENT COMMENT "自增id",name varchar(30) NOT NULL COMMENT "权限名",route varchar(50) NOT NULL COMMENT "权限所有的路由",description varchar(100) NOT NULL COMMENT "权限的描述")ENGINE=innodb DEFAULT CHARSET=utf8 COMMENT="权限表";CREATE TABLE IF NOT EXISTS mr_user_role(id int(11) PRIMARY KEY AUTO_INCREMENT COMMENT "自增id",user_id int(11) NOT NULL COMMENT "用户id",role_id int(11) NOT NULL COMMENT "角色id")ENGINE=innodb DEFAULT CHARSET=utf8 COMMENT="用户角色表";CREATE TABLE IF NOT EXISTS mr_role_privilege(id int(11) PRIMARY KEY AUTO_INCREMENT COMMENT "自增id",role_id int(11) NOT NULL COMMENT "角色id",privilege_id int(11) NOT NULL COMMENT "权限id")ENGINE=innodb DEFAULT CHARSET=utf8 COMMENT="角色权限表";

2、在用户模型和角色模型中实现多对多

class User extends Model{  protected $primaryKey = "id";  protected $table = "user";  public $timestamps = false;  public $guarded = [];  public function roles()  {    return $this->belongsToMany("AppModelRole", "user_role", "user_id", "role_id")->withPivot("user_id", "role_id");  }}class Role extends Model{  protected $table = "role";  protected $primaryKey = "id";  public $timestamps = false;  public $guarded = [];  public function privileges()  {    return $this->belongsToMany("AppModelPrivilege", "role_privilege", "role_id", "privilege_id")->withPivot(["role_id", "privilege_id"]);  }}

3、将菜单视为公共区域，在appProvidersAppServiceProvider.php里写

public function boot(){    View::composer("layout.slide", function($view) {      $roles_id = User::find(session("user")["id"])->roles->map(function ($role) {        return $role->id;      });  // 使用map，最终得到的结果$roles_id = [1, 2, ...]      $privileges = [];      foreach ($roles_id as $role) {        $privileges = array_merge($privileges, Role::find($role)->privileges->map(function ($privilege) {          return [$privilege->name, $privilege->route];        })->toArray());      }  // 得到的结果，$prpvileges = [["index/..", "列表"]， ["", ""]]      $view->with("privileges", $privileges);    });}

4、菜单的实现（可以直接遍历一个div，我这里因为有不同的样式，便用了判断）

@foreach ($privileges as $privilege)      @if ($privilege[1] == "key/index" && $privilege[0] == "键名列表")        <div class="slide__left__key" style="margin-top: 10px;"><a href="{{ url("key/index") }}" rel="external nofollow" ><span class="glyphicon glyphicon-th"></span> 键名列表</a></div>      @endif      @if ($privilege[1] == "key/create" && $privilege[0] == "添加键名")          <div class="slide__left__key"><a href="{{ url("key/create") }}" rel="external nofollow" ><span class="glyphicon glyphicon-plus"></span> 添加键名</a></div>      @endif      @if ($privilege[1] == "project/index" && $privilege[0] == "项目列表")          <div class="slide__left__key" style="margin-top: 20px;"><a href="{{ url("project/index") }}" rel="external nofollow" ><span class="glyphicon glyphicon-th-list"></span> 项目列表</a></div>      @endif      @if ($privilege[1] == "project/create" && $privilege[0] == "添加项目")          <div class="slide__left__key"><a href="{{ url("project/create") }}" rel="external nofollow" ><span class="glyphicon glyphicon-edit"></span> 添加项目</a></div>      @endif      @if ($privilege[1] == "user/index" && $privilege[0] == "用户列表")          <div class="slide__left__key" style="margin-top: 20px;"><a href="{{ url("user/index") }}" rel="external nofollow" ><span class="glyphicon glyphicon-th-large"></span> 用户列表</a></div>      @endif      @if ($privilege[1] == "user/create" && $privilege[0] == "添加用户")          <div class="slide__left__key"><a href="{{ url("user/create") }}" rel="external nofollow" ><span class="glyphicon glyphicon-plus-sign"></span> 添加用户</a></div>      @endif    @endforeach

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