[英]How can I convert my json response to nested json where attributes are under another 'attribute'?
我是 Django API 的新手。 我正在设计一个 api ,在发布请求后响应将是这样的:
{ "set_attributes":
{
"name": "some value",
"age": "another value"
},
}
目前我的回复显示如下:
{
"Name": "some value",
"age": "another value"
}
我正在使用基于 class 的视图,对于 forms,我正在使用 Django 模型。 我没有渲染任何 html forms。
序列化程序.py:
class ContactSerializer(serializers.ModelSerializer):
Name = serializers.CharField(max_length=100)
Birthdate = serializers.DateField(default=datetime.now())
class Meta:
model = Contact
fields = ('Name', 'Birthdate', 'age')
class ListingSerializer(serializers.ModelSerializer):
age = serializers.Field(source='age')
模型.py
class Contact(models.Model):
Name = models.CharField(max_length=100)
Birthdate = models.DateField(default=datetime.now())
age = models.IntegerField(default=0)
def save(self, *args, **kwargs):
if self.Birthdate > date.today():
raise ValidationError("The date cannot be in the future!")
super(Contact, self).save(*args, **kwargs)
@property
def age(self):
today = date.today()
birth = self.Birthdate
newage = today.year - birth.year - ((today.month, today.day) < (birth.month, birth.day))
return newage
def __str__(self):
return self.Name
视图.py
class ContactList(generics.ListCreateAPIView):
queryset = Contact.objects.all()
serializer_class = ContactSerializer
class ContactDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Contact.objects.all()
serializer_class = ContactSerializer
您可以尝试 to_representation() 方法在另一个属性下的嵌套 json 中显示您的属性。
为此,您必须按以下顺序添加 to_representation() 方法来编辑您的views.py:
class ContactSerializer(serializers.ModelSerializer):
Name = serializers.CharField(max_length=100)
Birth_year = serializers.IntegerField(default=2022)
class Meta:
model = Contact
fields = ('Name','Birthdate','age')
def to_representation(self, instance):
response = {
"set_attributes" : super().to_representation(instance),
}
return response
class ListingSerializer(serializers.ModelSerializer):
age = serializers.Field(source='age')
实现 .to_representation(self, value) 方法将字段的目标作为值参数,并且应该返回应该用于序列化目标的表示。 value 参数通常是 model 实例。
这是 output:
{ "set_attributes" :
{
"name": "some value",
"Birthdate": 2005/4/24,
"age": 17
},
}
希望它有所帮助。
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