Question

用户模型：

public function followers() {
    return $this->hasMany('Follower', 'f_who');
}

配置文件控制器：

$user_followers = User::with('followers')->find($user_id)->toArray();

结果

Array
(
[user_id] => 1
[username] => dev
[email] => dev@dev.com
[name] => AdminName
[surname] => AdminSur
[profile_image] => /img/anon1.jpg
[ip] => 127.0.0.1
[pp] => 0
[np] => 0
[followers_count] => 2
[photos_count] => 0
[created_at] => 2014-12-17 12:08:04
[updated_at] => 2015-01-18 21:15:55
[followers] => Array
    (
        [0] => Array
            (
                [follower_id] => 1
                [f_who] => 1
                [f_which] => 2
                [created_at] => -0001-11-30 00:00:00
                [updated_at] => -0001-11-30 00:00:00
            )

        [1] => Array
            (
                [follower_id] => 2
                [f_who] => 1
                [f_which] => 3
                [created_at] => -0001-11-30 00:00:00
                [updated_at] => -0001-11-30 00:00:00
            )

    )

）

我需要使用关系在子“followers”数组中获取关注者姓名，姓氏等（左连接用户表）。我真的很困惑这种关系。如果问题或结构不清楚，请告诉我，我会尝试解决这个问题。

f_who - 表示被关注的人。

f_which - 关注的人

如果我尝试像这样的belongsToMany关系：

public function followers() {
    return $this->belongsToMany('Follower', 'users')->withPivot('f_who');
}

我明白了：

Unknown column 'users.follower_id' in 'field list' (SQL: select `followers`.*, `users`.`user_id` as `pivot_user_id`, `users`.`follower_id` as `pivot_follower_id`, `users`.`f_who` as `pivot_f_who` from `followers` inner join `users` on `followers`.`follower_id` = `users`.`follower_id` where `users`.`user_id` in (1))

应选择users。user_id`

Answer 1

是其他用户的关注者？如果是这样，那么只需将用户与用户联系起来。

在您的用户模型中创建一个方法，如此。

class User {

    public function followers() {
        // Model, pivot table, id of person being followed, id of person following
        return $this->belongsToMany('User', 'followers', 'f_who', 'f_which');   
    }
}

查询关系

$user = User::with('followers')->find($user_id)->toArray();

无法得到结果。关系（Laravel 4）

1 个答案: