Django：如何根据 order_id 获取 order_detail_data答案

【问题标题】：Django: how to get order_detail_data as per order_idDjango：如何根据 order_id 获取 order_detail_data
【发布时间】：2020-06-12 15:39:20
【问题描述】：

class Order_ListAPIView(APIView):
    def get(self,request,format=None):
        totalData=[]
        if request.method == 'GET':
            cur,conn = connection()
            order_query = ''' SELECT * FROM orders'''
            order_detail_query = ''' SELECT * FROM order_details'''

            with conn.cursor(MySQLdb.cursors.DictCursor) as cursor:
                cursor.execute(order_query)
                order_result = cursor.fetchall()
                order_data = list(order_result)
                # print(order_data)


                cursor.execute(order_detail_query)
                order_detail_result = cursor.fetchall()
                order_detail_data = list(order_detail_result)
                # print(order_detail_data)

            totalData.append({"order_data":order_data, "order_detail_data":order_detail_data})
            return Response({"totalData":totalData,},status=status.HTTP_200_OK)
        else:
            return Response(status=status.HTTP_400_BAD_REQUEST)

输出：

{
    "totalData": [
        {
            "order_data": [
                {
                    "order_id": 1,
                    "user_id": 5,
                    "billing_shipping_id": 1,
                    "payment_method_id": 2,
                    "delivery_id": 2,
                    "txnid": "",
                    "order_no": "0822-1582695084-0006",
                    "delivery_amount": 0.0,
                    "discount_amount": 570.0,
                    "order_total": 2280.0,
                    "payment_status": "Unpaid",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active",
                    "mihpayid": "",
                    "payuMoneyId": ""
                },    
            ],
           "order_detail_data": [
                {
                    "order_detail_id": 1,
                    "order_id": 1,
                    "user_id": 5,
                    "product_id": 202,
                    "product_size_id": 867,
                    "size_id": 1,
                    "qty": 1,
                    "product_price": 2850.0,
                    "order_item_status": "Placed",
                    "last_status_datatime": "2020-02-26T11:01:24",
                    "feedback": "",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active"
                },
                ],
                },                                                                           
                ],                                                                              
                }

我想要什么：

我希望 order_data 中的 order_detail_data 按照 order_id 如下所示：

{
    "totalData": [
        {
            "order_data": [
                {
                    "order_id": 1,
                    "user_id": 5,
                    "billing_shipping_id": 1,
                    "payment_method_id": 2,
                    "delivery_id": 2,
                    "txnid": "",
                    "order_no": "0822-1582695084-0006",
                    "delivery_amount": 0.0,
                    "discount_amount": 570.0,
                    "order_total": 2280.0,
                    "payment_status": "Unpaid",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active",
                    "mihpayid": "",
                    "payuMoneyId": "",                                                          

                    "order_detail_data": [{                                              
                    "order_detail_id": 1,
                    "order_id": 1,
                    "user_id": 5,
                    "product_id": 202,
                    "product_size_id": 867,
                    "size_id": 1,
                    "qty": 1,
                    "product_price": 2850.0,
                    "order_item_status": "Placed",
                    "last_status_datatime": "2020-02-26T11:01:24",
                    "feedback": "",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active"                                                         
                      }],
                },
                   {                                                                    
                    "order_id": 2,
                    "user_id": 5,
                    "billing_shipping_id": 1,
                    "payment_method_id": 2,
                    "delivery_id": 2,
                    "txnid": "",
                    "order_no": "0822-1582695084-0007",
                    "delivery_amount": 0.0,
                    "discount_amount": 570.0,
                    "order_total": 2280.0,
                    "payment_status": "Unpaid",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active",
                    "mihpayid": "",
                    "payuMoneyId": "",                                                          

                    "order_detail_data": [{                                              
                    "order_detail_id": 2,
                    "order_id": 2,
                    "user_id": 5,
                    "product_id": 202,
                    "product_size_id": 867,
                    "size_id": 1,
                    "qty": 1,
                    "product_price": 2850.0,
                    "order_item_status": "Placed",
                    "last_status_datatime": "2020-02-26T11:01:24",
                    "feedback": "",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active"                                                         

                    }], },    
                   # and so on...                                                     
                  ],
                },    
            ],
           "order_detail_data": [
                {
                    "order_detail_id": 1,
                    "order_id": 1,
                    "user_id": 5,
                    "product_id": 202,
                    "product_size_id": 867,
                    "size_id": 1,
                    "qty": 1,
                    "product_price": 2850.0,
                    "order_item_status": "Placed",
                    "last_status_datatime": "2020-02-26T11:01:24",
                    "feedback": "",
                    "created_datetime": "2020-02-26T11:01:24",
                    "updated_datetime": "2020-02-26T05:31:24",
                    "status": "Active"
                },
                ],
                },                                                                            
                ],                                                                              
                }

我使用原始查询直接从数据库而不是 ORM。我想根据 order_data 在 order_data 中获取 order_detail_data order_id。

我正在尝试解决这个问题，但我没有得到任何可能的答案来解决这个问题。如果有人能帮助我找到我正在寻找的东西，那就太好了。非常感谢您！。

【问题讨论】：

你能证明自己任何努力解决这个问题吗？
@anonymoususer 你可以再次查看你的代码，你可以自己解决，这很容易，试试这个，否则如果你不能做到，我们会在这里帮助你！
您可以将您的模型添加到帖子中吗？
我没有任何模型，因为我使用的是原始查询而不是 ORM @cabesuon
您找到解决方案了吗？ @MehaParekh

标签： python mysql django-rest-framework

【解决方案1】：

如果您使用的是原始查询，那么您只需要合并数据。这样的事情应该可以工作，

def merge_order_data_and_detail(orders, details):
  """Group details by order_id and merge it in orders."""
  # create dictionary key:order_id value:[order_detail_data]
  dic = {}
  for d in details:
    if d['order_id'] not in dic:
      dic[d['order_id']] = []
    dic[d['order_id']].append(d)
  # iterate orders and add details
  for o in orders:
    if o['order_id'] in dic:
      o['order_detail_data'] = dic[o['order_id']]

orders = [
  {
      "order_id": 1,
      "user_id": 5
  },
  {
      "order_id": 2,
      "user_id": 50
  }    
]
details = [
  {
      "order_detail_id": 1,
      "order_id": 1,
      "user_id": 5,
      "product_id": 202
  },
  {
      "order_detail_id": 2,
      "order_id": 1,
      "user_id": 5,
      "product_id": 203
  },
  {
      "order_detail_id": 3,
      "order_id": 2,
      "user_id": 50,
      "product_id": 402
  },
  {
      "order_detail_id": 4,
      "order_id": 2,
      "user_id": 50,
      "product_id": 403
  }
]
merge_order_data_and_detail(orders, details)
print(orders)

结果：

[{'order_id': 1, 'user_id': 5, 'order_detail_data': [{'order_detail_id': 1, 'order_id': 1, 'user_id': 5, 'product_id': 202}, {'order_detail_id': 2, 'order_id': 1, 'user_id': 5, 'product_id': 203}]}, {'order_id': 2, 'user_id': 50, 'order_detail_data': [{'order_detail_id': 3, 'order_id': 2, 'user_id': 50, 'product_id': 402}, {'order_detail_id': 4, 'order_id': 
2, 'user_id': 50, 'product_id': 403}]}]

我删除了很多订单和详细信息属性只是为了简化测试。

我没有全貌，但如果您还没有使用 Django 模型，应该考虑使用它。这是充分利用框架潜力的方式。

希望对你有帮助。

【讨论】：

你的输入数据是什么？
您在链接中提到的预期输出是答案功能的结果，您只是缺少详细信息的名称属性，没有键就不能有值字典..我在预期结果中遗漏了什么？
非常感谢。我真的很感激！ @cabesuon
很高兴能帮到你！