拉威尔嵌套关系

用户可以有多个设备,每个设备可以有多个接口。

我想让用户了解他的设备和每个设备的接口。

用户模型

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
        'profile_image', 'retrieve_email', 'retrieve_sms'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    public function devices()
    {
        return $this->hasMany('App\Device');
    }

}

class Device extends Model
{
    public function interfaces()
    {
        return $this->hasMany('App\ModelInterface');
    }

    public function user()
    {
        return $this->belongsTo('App\User');
    }

}

模型接口模型

class ModelInterface extends Model
{
    public function device()
    {
        return $this->belongsTo('App\Device');
    }

    public function alerts(){
        return $this->hasMany('App\Alerts');
    }
}

如何获得用户界面?

Auth::user()->devices returns all the devices and works.

我怎么可能说

Auther::user()->devices->interfaces