1.修改backend/config/main.php

            'user' => [
                'identityClass' => 'common\models\Adminuser',//认证类
                'enableAutoLogin' => true,
                'identityCookie' => ['name' => '_identity-backend', 'httpOnly' => true],
            ],
            'session' => [//不影响前端登录
                // this is the name of the session cookie used for login on the backend
                'name' => 'advanced-backend',
                'savePath'=>sys_get_temp_dir(),
            ],
            'request'=>[
                'cookieValidationKey'=>'sdfsfwef',
                'csrfParam'=>'_adminCSRF',
            ],

2 新建AdminLoginForm.php 参考LoginForm.php

3 修改backend/controllers/SiteController.php里面LoginForm替换成AdminLoginForm

4 参考User.php修改Adminuser.php,去掉状态

public static function tableName()
    {
        return '{{%adminuser}}';
    }