eloquent 一对多对多

Question

大家好，我从 Laravel 和 eloquent 开始，我已经遇到问题了。

我有用户，每个用户可以拥有多辆车，一辆车可以租多辆。我想列出属于当前用户的每辆车的所有租赁。

用户模型：

class User extends Authenticatable
{
    use Notifiable;

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

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


    public function vehicule()
    {
        return $this->hasMany('App\Models\Vehicule');
    }

车辆型号：

use Illuminate\Database\Eloquent\Model;

class Vehicule extends Model
{
    protected $fillable = [

    'user_id',
    'published',
    'rented'
];


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

public function rental()
{
    return $this->hasMany('App\Models\Rental');
}

租赁模式：

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Rental extends Model
{

    protected $fillable = [
        'from_date',
        'to_date',
        'amount_total',
        'vehicule_id'
    ];


    public function vehicule()
    {
        return $this->belongsTo('App\Models\Vehicule');
    }
}

Answer 1

您可以使用您现有的关系：

$rentals = $user->load('vehicule.rental')->pluck('vehicule.rental')->collapse();

或添加 HasManyThrough 关系到 User:

public function rental()
{
    return $this->hasManyThrough(Rental::class, Vehicule::class);
}

$rentals = $user->rental;

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