Laravel Eloquent有一个。试图获得非对象的属性

I've used Eloquent hasOne to create a relationship between the user and the users_permissions table when the user register's to the website and group the user according to the input they put on the form and it worked fine, but the same method I think it does not recognize when the same user is signed in the website.

我已经使用Eloquent hasOne在用户注册到网站时创建用户和users_permissions表之间的关系，并根据他们在表单上输入的内容对用户进行分组，并且工作正常，但我认为它的方法相同无法识别同一用户何时在网站上签名。

The below code work's when the user sign-up to the website

当用户注册网站时，以下代码工作

$user->permissions()->create(UserPermission::user_group($nature_of_entity));

But when I want to use the below method it, I get an error Trying to get property of non-object.

但是当我想使用下面的方法时，我得到一个错误试图获取非对象的属性。

public function hasPermission($permission) {
        return (bool) $this->permissions->$permission;
    }

public function permissions() {
        return $this->hasOne('App\User\UserPermission', 'user_id');
    }

In the user database a table named users_permissions that has (id, user_id, is_group_one, is_group_two, is_group_three)

在用户数据库中，名为users_permissions的表具有（id，user_id，is_group_one，is_group_two，is_group_three）

I'm trying to see it the user is in which group, like:

我试图看到用户在哪个组中，例如：

if($app->user->hasPermission('is_group_one')){
        echo 'Group One';
}

But I get an error Trying to get property of non-object. I'd really appreciate it if any can help and if they are ways I could do this and use Laravel Eloquent Relationships methods. I hope you can understand what I mean.

但我得到一个错误试图获得非对象的属性。我真的很感激，如果有任何可以帮助，如果他们是我可以做到这一点，并使用Laravel Eloquent Relationships方法。我希望你能明白我的意思。

1 个解决方案

#1

Create a scope that queries through the permissions relationship and checks if the column (i.e. $permission) is TRUE. Axe the (bool) bit...

创建一个通过权限关系查询的范围，并检查列（即$ permission）是否为TRUE。 Ax（bool）位......

public function scopeHasPermission($query, $permission) 
{        
    return $query->permissions->where($permission, true);
}

Then in your controller, keep this the same as you had it:

然后在你的控制器中，保持它与你一样：

if($app->user->hasPermission('is_group_one')) {
    ...
}

#1