逍遥居

原理：利用yii2-admin来管理api权限

1 安装yii2-admin

pre-install composer
$ composer config -g repo.packagist composer https://packagist.phpcomposer.com
$ composer require mdmsoft/yii2-admin "~2.0"

2 配置backend/config/main.php

<?php
$params = array_merge(
    require __DIR__ . '/../../common/config/params.php',
    require __DIR__ . '/../../common/config/params-local.php',
    require __DIR__ . '/params.php',
    require __DIR__ . '/params-local.php'
);

return [
    'id' => 'app-backend',
    'basePath' => dirname(__DIR__),
    'controllerNamespace' => 'backend\controllers',
    'bootstrap' => ['log'],
    'modules' => [
        'admin' => [
            'class' => 'mdm\admin\Module',
        ]
                ],
    'components' => [
        'request' => [
            'csrfParam' => '_csrf-backend',
        ],
        'user' => [
            'identityClass' => 'common\models\User',
            'enableAutoLogin' => true,
            'identityCookie' => ['name' => '_identity-backend', 'httpOnly' => true],
        ],
        'session' => [
            // this is the name of the session cookie used for login on the backend
            'name' => 'advanced-backend',
        ],
        'log' => [
            'traceLevel' => YII_DEBUG ? 3 : 0,
            'targets' => [
                [
                    'class' => 'yii\log\FileTarget',
                    'levels' => ['error', 'warning'],
                ],
            ],
        ],
        'errorHandler' => [
            'errorAction' => 'site/error',
        ],
        /*
        'urlManager' => [
            'enablePrettyUrl' => true,
            'showScriptName' => false,
            'rules' => [
            ],
        ],
        */
         'authManager' => [
            'class' => 'yii\rbac\PhpManager', // or use 'yii\rbac\DbManager'
        ]
    ],
    'as access' => [
        'class' => 'mdm\admin\components\AccessControl',
        'allowActions' => [
            'site/*',
            'admin/*',
            'some-controller/some-action',
        ]

    ],

    'params' => $params,
];

3 访问 yourpath/index.php?r=admin

或者index.php?r=admin%2Froute (ps: 访问encodeURIComponent后的url，直接admin/route会有问题)

4 利用 AdminLTE 渲染后台模板，优化用户体验

4.1 进入 cmd，切换到 advanced 目录，输入

composer require dmstr/yii2-adminlte-asset "2.*"

4.2 复制 vendor/dmstr/yii2-adminlte-asset/example-views/yiisoft/yii2-app里面的两个文件夹 到 backend/views/，覆盖views下的对应文件夹(自己写的先备份，这里只覆盖系统生成的)

再访问 http://localhost/path/to/index.php?r=admin 看效果

4.3 自己记控制器命令总不如点击链接来得方便，所以可以配置下左侧菜单,

修改backend\views\layouts\left.php

 [
                        'label' => '权限管理',
                        'icon' => 'share',
                        'url' => '#',
                        'items' => [
                            ['label' => '权限', 'icon' => 'file-code-o', 'url' => ['/admin/permission'],],
                            ['label' => '角色', 'icon' => 'dashboard', 'url' => ['/admin/role'],],
                            ['label' => '分配', 'icon' => 'dashboard', 'url' => ['/admin/assignment'], ],
                            ['label' => '菜单', 'icon' => 'dashboard', 'url' => ['/admin/menu'], ],
                            ['label' => '路由', 'icon' => 'dashboard', 'url' => ['/admin/route'],],
                        ],
                    ],

进入 cmd，切换到 advanced 目录，输入
yii migrate --migrationPath=@mdm/admin/migrations
成功执行以后查看数据库会发现里面多了张menu表

5 配置用数据库表来存储rbac数据

5.1 修改backend/config/main.php

 'authManager' => [
            'class' => 'yii\rbac\DbManager', // or use 'yii\rbac\DbManager'
        ]

修改common/config/main-local.php,components里加入上面代码

5.2 执行

yii migrate --migrationPath=@yii/rbac/migrations
成功执行以后查看数据库会发现里面多了四张auth开头的授权表

配置这块就先到这里，接下来学习怎么使用这么强大的权限分配工具
思路：先从route里把要设置的function拉到一个权限池子里；然后新建permission，用来打包池子里的function；接着给用户分配权限包

5.3 api的权限分配分两种情况

5.3.1 控制系统生成的function（比如view,index,delete,modify）

在控制器里加上如下函数checkAccess：

//rbac情况一：系统生成的方法,testview,test为打包好route的permission名称
    public function checkAccess($action,$model=null,$params=[])
    {
        if($action==="view"){
            if(\Yii::$app->user->can('testview')){
                return true;
            }
        }

        if($action==="view"||$action==="update"||$action==="delete"||$action==="create"||$action==="index"){
            if(\Yii::$app->user->can('test')){
                return true;
            }
        }

        throw new ForbiddenHttpException("sorry , no authority!");
    }

5.3.2 控制自定义或者重写的function

就在每个定义的function前面加上判断，比如：

//rbac情况二：自定义的方法或者重写的方法,fun为打包好route的permission名称
    public function actionFun(){
        if(!\Yii::$app->user->can('fun')){
            throw new ForbiddenHttpException("sorry , no authority!");
        }
        return "ok";
    }