Laravel Eloquent hasManyThrough 关系+分页

Question

我有三张桌子：

Videos:
-id
-name
-another fields

Cats:
-id
-name
-another fields

Cats_videos:
-id
-cat_id
-video_id

还有三个 Eloquent 模型：

class cat extends Model
{
    protected $table = 'cat';

    public function AllCatVideos()
    {
        return $this->hasManyThrough('App\videos', 'App\cats_videos','cat_id','id');
    }
}

class videos extends Model
{
    public $timestamps = false;
    protected $table ='videos';
}

class cats_videos extends Model
{
    protected $table = 'cats_videos';
}

所以，我想在一只猫中接收所有视频，然后对结果进行分页。我试图这样做：

$cat = new Cats();
    $videos = $cat->find(58)->AllCatVideos()->toSql();

我收到这样的 sql：

select * from `videos` inner join `cats_videos` on `cats_videos`.`id` = `videos`.`id` where `cats_videos`.`cat_id` = 58

但我需要“cats_videos.video_id = videos.id”而不是“cats_videos.id = videos.id”。如何使用“hasManyThrough”来做到这一点？还是我应该看看别的？

Answer 1

问题解决了。我只需要使用 belongsToMany。

class cat extends Model{
public function Videos()
{
    return $this->belongsToMany('App\videos','cats_videos','cat_id','video_id');
}}