Question

我有以下要求使用Django Rest Framework。我需要在模型3的Get请求中处理对Model 2的POST请求

我有两个型号，只保留了几列

models.py

class Customers(models.Model):  #original customers data are stored here 
    customer_id = models.BigIntegerField(db_column='customer_id', primary_key=True)  
    customer_name = models.CharField(db_column='Customer_name', blank=True, null=True, max_length=50)  

class Customers_In_Use(models.Model):  #where we will track the locking of customers  data once they get used
    customer_id = models.OneToOneField(Customers_Master, to_field='customer_id', on_delete=models.DO_NOTHING, related_name='rel_customer')  
    comments = models.TextField(blank=True,null=True)

一个数据库视图。

Customers_View(models.Model): 
    customer_id = models.BigIntegerField()
    customer_name = models.CharField()
    in_use = models.CharField(blank=True)

    class Meta:
        managed = False

此视图在后端构建，如下所示

Select 
 C.customer_id, 
 C.customer_name, 
 CASE WHEN U.customer_id_id IS NULL THEN 'No' ELSE 'Yes' END AS In_Use,
from Customers C
left join
Customers_In_Use U
on C.customer_id=U.customer_id_id

在我的Django Rest Api上，我基于Customers_View（GET请求）公开数据

我有一个对Customers_In_Use的POST请求，它将以json格式接收customer_id和注释。

Example Data on Customers_View:
customer_id,Customer_name,in_use
123,John,No
456,Smith,No
789,John,No
987,Tom,Yes  #Yes means this customer data is already in use 
567,Tom,No

现在在api上，如果我运行此请求

127.0.0.1:8000/api/customers_view/?in_use=No&customer_name=Tom

我应该得到如下结果

{
customer_id:567,
customer_name=Tom,
in_use:No
}

由于我收到了customer_id 567，我需要向Customers_In_Use发送帖子请求

Typical post request format with below data to be passed
{
comment:'I will use this data',
customer_id:567
}

现在我的问题是，这可以一次完成吗？

在customers_view上调用GET请求的那一刻，我们应该向Customers_In_Use发送帖子请求

从安静的一面：

我已经写了一份简单的listview来自customer_view

class customers_views_List(generics.ListAPIView):
    queryset = customers_view.objects.all()
    serializer_class = customers_views_serializer

on customers_in_use我使用了viewset

class customers_In_Use_api(viewsets.ModelViewSet):
    lookup_field = 'customer_id'  
    queryset = customers_in_use.objects.all()  
    serializer_class = customers_in_use_Serializer

Answer 1

是的，你可以，

只需覆盖您的类customers_In_Use_api。

的create方法

您还必须将注释，customer_name和in_use放在正文请求中（如果您正在使用jquery ajax，只需将它放在数据字段中）例如

您必须通过in_use和name字段获取Customers_View的ID。

之后只需保存新的Customer_In_Use

创建功能的一个例子：

def create(self, request):
    in_use = request.data.get('in_use')
    name = request.data.get('customer_name')
    comment = request.data.get('comment')
    customers_view = get_object_or_404(Customers_View, customer_name=name)
    if customers_view.in_use != in_use:
        return Response({'error': 'Not found'}, status=status.HTTP_404_NOT_FOUND)
    serializer_datas['customer_id'] = customers_view.id
    serializer_datas['comment'] = comment
    serializer = customers_in_use_Serializer(serializer_datas)
    if serializer.is_valid():
        serializer.save()
        return Response(serializer.data, status=status.HTTP_201_CREATED)
    return Response({'error': 'Not found'}, status=status.HTTP_404_NOT_FOUND)

不要忘记状态和get_object_or_404之类的所有导入，它应该可以正常工作。此代码未经过测试，因此您可能需要纠正一些错误

Django Rest Api - 一次性获取和发布请求 - 基于获取结果的发布请求

1 个答案: