Question

我有 Farmer 模型，它基本上是用户的扩展名我想使用first_name＆amp;来自 Farmer 中用户的last_name，并希望将它们序列化。

我的models.py如下所示：

class Farmer(models.Model):

  #Field for refering the default user
  user = models.OneToOneField(User, on_delete=models.CASCADE, primary_key=True)

  def __str__(self):              # __unicode__ on Python 2
    return "%s the farmer" % self.user.username

我的serializers.py如下所示：

class UserSerializer(serializers.ModelSerializer):
first_name = serializers.CharField(required=True)
last_name = serializers.CharField(required=True)
class Meta:
    model = User
    fields = ('first_name', 'last_name')


class FarmerSerializer(serializers.ModelSerializer):
 user = UserSerializer()
 ...
 ...  
 class Meta:
    model = Farmer
    fields = ('user','birth_date', 'email', 'phone_number')

我按照以下方式获得JSON：

{“user”：{“first_name”：“Jannes”，“last_name”：“Stubbi”}， “birth_date”：“2016-04-13”， “email”：“test@test.com”， “phone_number”：“+ 4912345678” }，]

我更愿意将数据作为 ：

{“first_name”：“Jannes”，“last_name”：“Stubbi”，“birth_date”：“2016-04-13”，“email”：“test@test.com”，“phone_number”：“+ 4912345678" }

我的views.py

  class JSONResponse(HttpResponse):
  """
  An HttpResponse that renders its content into JSON.
  """
  def __init__(self, data, **kwargs):
    content = JSONRenderer().render(data)
    kwargs['content_type'] = 'application/json'
    super(JSONResponse, self).__init__(content, **kwargs)


#view to get the details of all the farmers
@api_view(('GET',))
def get_all_farmers_details(request):

 #Fetch all the farmers from database
 results = Farmer.objects.all()
 #Serialize the obtained results
 serializer = FarmerSerializer(results, many=True)
 return Response(serializer.data)

我怎样才能做到这一点？

Answer 1

可能你可以尝试这样的事情。

class FarmerSerializer(serializers.ModelSerializer):
    first_name = serializers.CharField(source='user.first_name')
    last_name = serializers.CharField(source='user.last_name')
    ..
    ..
    class Meta:
        model = Farmer
        fields = ('first_name', 'last_name', 'phone_number', 'email')

诀窍是使用'source'属性。

Answer 2

您可以修改serializer.data返回的view：

@api_view(('GET',))
def get_all_farmers_details(request):

    #Fetch all the farmers from database
    results = Farmer.objects.all()
    #Serialize the obtained results
    serializer = FarmerSerializer(results, many=True)

    userDict = serializer.data.pop("user", None)
    if userDict is not None:
        serializer.data['first_name'] = userDict['first_name']
        serializer.data['last_name'] = userDict['last_name']

    return Response(serializer.data)

Django custon用户模型/序列化器

2 个答案: