yii2-basic后台管理功能开发之五：用户权限的控制

需求:后台有两种权限+管理员+用户

区别:可以访问的页面不同

解决方法:用户表添加role字段,使用到的是yii2 存取控制过滤器（ACF）方法.

>1在web.php中配置授权的类,有两种,我用到的是PhpManager

‘components‘ => [
    ‘authManager‘ => [
            ‘class‘ => ‘yii\rbac\PhpManager‘,
        ],

    ],

>2在用户表中配置角色权限对应的role值,也可以不配置

 const ROLE_ADMIN = 0;
 const ROLE_USER = 1;

>3重写授权规则类AccessRule

class AccessRule extends \yii\filters\AccessRule
{
    /**
     * @inheritdoc
     */
    protected function matchRole($user)
    {
        if (count($this->roles) === 0) {
            return true;
        }
        foreach ($this->roles as $role) {
            if ($role === ‘?‘) {
                if ($user->getIsGuest()) {
                    return true;
                }
            }elseif (!$user->getIsGuest() && $role == $user->identity->role) {
                return true;
            }
        }
        return false;
    }

}

>4在控制器中配置相应的权限.

注意其中的ruleConfig是我们刚才改写的类,如果需要控指定的action,则在rules对[action]进行配置.

 public function behaviors()
    {
        return [
            ‘access‘ => [
                ‘class‘ => AccessControl::className(),
                ‘ruleConfig‘ => [
                    ‘class‘ => AccessRule::className(),
                ],
                ‘rules‘ => [
                    [
                        ‘allow‘ => true,
                        ‘roles‘ => [
                            User::ROLE_ADMIN,
                        ],
                    ],
                ],
            ],
        ];
    }