我有网站购物车的MySQL表格:
Cart:
id | user
Cart_goods:
cart_id | good_id | good_type
Details:
id | name
Appliances:
id | name
Class Cart,包含商品:
class Cart extends Model
{
protected $table = 'cart';
protected $fillable = ['user', 'sum', 'profit', 'discount'];
protected $guarded = ['user'];
public function goods()
{
return $this->hasMany('App\Models\Good');
}
}
Class Good,可以是详细信息或设备,相对于cart by cart_id:
class Good extends Model
{
protected $table = 'cart_goods';
protected $types = [
'Detail' => 'App\Models\Detail',
'Appliance' => 'App\Models\Appliance'
];
public $primaryKey = 'cart_id';
public function good()
{
return $this->morphTo();
}
}
详情课程:
class Detail extends Model {
use SoftDeletes;
protected $morphClass = 'Detail';
protected $table = 'details';
protected $fillable = ['article', 'name', 'photo', 'price_procurement', 'price_retail', 'serial', 'location_id', 'type_id', 'appliance_id', 'comment', 'for'];
protected $dates = ['deleted_at'];
protected $guarded = [];
public function goods()
{
return $this->morphMany('App\Models\Good', 'good');
}
}
我需要在购物车中获取所有设备和细节。我怎么能用ORM做到这一点?
答案 0 :(得分:2)
使用nested eager loading。假设关系方法名称为cartGoods
,details
和appliances
,则details
是购物车的详细信息,并且您已正确定义关系:
Card::where('id', $id)
->with('cartGoods.appliances', 'details')
->first();
答案 1 :(得分:2)
试试这个:
方法1:如果您有$ cart模型实例
$cart->load('goods.good');
方法2:如果您需要购物车中的所有设备和详细信息,请参阅卡ID
Cart::where('id', $cartId)->with('goods.good')->first();
答案 2 :(得分:1)
我已经完成了这个,问题出在模型名称中,我将它写入数据库,如Detail和Appliance,但我需要使用
Relation::morphMap([
'detail' => 'App\Models\Detail',
'appliance' => 'App\Models\Appliance',
]);
在AppServiceProvider类中。