Laravel Eloquent With() With()

Question

我该如何使用多个 Eloquent With()？

PortalPlaylistElement 模型

class PortalPlaylistElement extends Model
{
    public $primaryKey = 'code';
    public $incrementing = false;
    public $timestamps = false;

    public function AirtimePlaylists()
    {
        return $this->hasOne('App\AirtimePlaylist','id','playlist_id');
    }
}

通话时间播放列表内容模型

class AirtimePlaylistContent extends Model
{
    protected $table = 'cc_playlistcontents';
}

通话时间播放列表模型

class AirtimePlaylist extends Model
{
    protected $table = 'cc_playlist';

    public function PortalPlaylistElements()
    {
        return $this->belongsTo('App\PortalPlaylistElement','playlist_id');
    }

    public function AirtimePlaylistContents()
    {
        return $this->hasMany('App\AirtimePlaylistContent','playlist_id');
    }
}

我没有任何问题:

AirtimePlaylist::with('AirtimePlaylistContents')->get());

或者

PortalPlaylistElement::with('AirtimePlaylists')->get();

但是我想在属于 PortalPlaylistElement 的 AirtimePlaylist 中获取所有 AirtimePlaylistContents。

本质上，(伪代码)

PortalPlaylistElement::with('AirtimePlaylists')::with('AirtimePlaylistContents')->get();

Answer 1

您需要 Nested Eager Looading

PortalPlaylistElement::with('AirtimePlaylists.AirtimePlaylistContents')->get();