mysql - 如何使用 Laravel、MySql、JSON 按不同城市对订单进行分组

Question

尝试构建 Laravel 项目订单相关信息的报告结果。但很难找到针对特定数据结构的解决方案。

我的要求:

// Date Ranges
$fromDate = $this->request->fromDate;
$toDate = $this->request->toDate;

所以结果应该在一个日期范围内。

我的订单表:

order_id    order_addresses    grand_total
------------------------------------------
  1           JSON DATA          3,000.00
  2           JSON DATA          2,000.00
  3           JSON DATA          1,500.00

所以我的 JSON 数据 看起来像这样:

{
   "delivery_address":{
      "House":"Offline House",
      "Street":"Offline Road",
      "Area":"Offline Area",
      "PostCode":"1230",
      "City":"City1",
      "Country":"Country1",
      "ContactPerson":"Offline User",
      "ContactNumber":"01XXXXXXXX"
   }
}

我只想得到如下响应:

    {
        "orders": 3, // How many orders are there in that particular city
        "totals": "5,500.00", // Total how much the cost of orders in that city
        "groupby": "City1",
    },
    {
        "orders": 5,
        "totals": "7,500.00", 
        "groupby": "City2",
    },
    ...,
    ...

我正在寻找一种使用 Laravel 中的查询生成器和 MySQL 的解决方案。

这是一个现有的项目，所以我无法真正改变它的构建方式。因此，关于如何从与订单例份以及总数等相关的 JSON 数据中提取城市的任何建议。 我只需要 order_ids 我认为城市明智，然后我可以构建我的结果无论如何我喜欢实现最终结果。

如果这里有任何疑问，请告诉我，以便我能够澄清。

提前致谢!

Answer 1

我建议使用 Laravel Collection 函数对获取的数据进行分组。

订单模型

class Order extends Model {

    // This will cast data to native types.
    // so order_address json string to array
    protected $casts = [
        'order_addresses' => 'array',
    ];

}

Controller 功能

// Fetch orders from the database as you usually do
// without considering about grouping.
// with your conditions.
// I will simply use all() for example.
$orders = Order::all();

// First group by city
// Then map to get the result you want.
$groupedOrders = $orders->groupBy(function($order) {

    // since we added it to the casts array in the model
    // laravel will automatically cast json string to an array.
    // So now order_address is an array.
    return $order->order_addresses['City'];
})
->map(function($groupedOrders, $groupName) {
    return [
        'orders' => $groupedOrders->count(),
        'totals' => $groupedOrders->sum('grand_total'),
        'groupby' => $groupName,
    ];
});