在 Laravel 中合并集合的值

Question

我一直在考虑这个问题。到目前为止，我尝试的是阅读、搜索和尝试 Collections 的文档，但对我正在尝试做的事情没有运气。

我想要实现的是通过“product_id”合并所有产品，对“qty”求和，并将同一产品的一组“责任”放入一个新集合中：

我的数据库中有以下信息：

[
   {
      "qty":"8",
      "product_id":6,
      "product":{
         "id":6,
         "name":"Mantequilla",
         "barcode":"123456789",
         "full_name":"Mantequilla - 123456789"
      },
      "itbis":"0",
      "precio":"0",
      "responsible":"Juan"
   },
   {
      "qty":"4",
      "product_id":6,
      "product":{
         "id":6,
         "name":"Mantequilla",
         "barcode":"123456789",
         "full_name":"Mantequilla - 123456789"
      },
      "itbis":"0",
      "precio":"0",
      "responsible":"Carlos"
   },
   {
      "qty":"3",
      "product_id":8,
      "product":{
         "id":8,
         "name":"Papas",
         "barcode":"4567894456",
         "full_name":"Papas - 4567894456"
      },
      "itbis":"0",
      "precio":"0",
      "responsible":"Pedro"
   }
]

然后会被转换成这样：

[
   {
      "qty":"12",
      "product_id":6,
      "product":{
         "id":6,
         "name":"Mantequilla",
         "barcode":"123456789",
         "full_name":"Mantequilla - 123456789"
      },
      "itbis":"0",
      "precio":"0",
      "responsible": ["Juan", "Carlos"]
   }
   {
      "qty":"3",
      "product_id":8,
      "product":{
         "id":8,
         "name":"Papas",
         "barcode":"4567894456",
         "full_name":"Papas - 4567894456"
      },
      "itbis":"0",
      "precio":"0",
      "responsible":"Pedro"
   }
]

Answer 1

        $arr = [...]; // Your input array

        $res = collect($arr)
            ->groupBy('product_id')
            ->map(function ($sub_collection) {
                $first = $sub_collection->first();

                $first['qty']         = array_sum(array_column($sub_collection->toArray(), 'qty'));
                $first['responsible'] = array_merge(array_column($sub_collection->toArray(), 'responsible'));

                return $first;
            })
            ->toArray();