我在产品模型中有这种关系。每种产品都有很多价格，每个价格都可能有折扣：
public function multiprices()
{
$id = $this->id;
// $id = 2597 (i need get product id to find discount)
return $this->belongsToMany('App\Multiprice')->with(['discount' => function($query) use ($id) {
$query->where('product_id', $id);
}]);
现在我想得到$product-
{
id: 18,
name: "",
price: "850000",
sort_order: 4,
desc: "",
slug: null,
size_id: 5,
cat_id: 4,
material_id: 2,
created_at: "2019-12-21T09:28:37.000000Z",
updated_at: "2020-06-27T14:33:19.000000Z",
kos: 1597,
pivot: {
product_id: 1597,
multiprice_id: 18
},
discount: {
id: 648,
name: "",
desc: null,
price: "130000",
uses: 0,
max_uses: 3,
is_fixed: 0,
active: 0,
product_id: 1597,
material_id: null,
multiprice_id: 18,
created_at: "یکشنبه 02 شهریور 1399 ساعت 19:15",
updated_at: "2020-08-24T08:18:58.000000Z",
delete: 1
}
}
折扣-
尝试在关系中添加透视表名称
public function multiprices()
{
$id = $this->id;
// $id = 2597 (i need get product id to find discount)
return $this->belongsToMany('App\Multiprice','pviot_table_name')->with(['discount' => function($query) use ($id) {
$query->where('product_id', $id);
}]);
