在使用 Django REST Framework 的序列化器(serializers)创建 API 时,我对 save()、create() 和 update() 方法之间的确切区别感到困惑,请告诉我它们之间的差异。以下是我的代码示例:
View.py
class AddUser(views.APIView):
serializer_class = UserForAdminSerializer
def post(self, request, *args, **kwargs):
serializer = UserForAdminSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
序列化器.py
class UserForAdminSerializer(serializers.ModelSerializer):
first_name = serializers.CharField(max_length=30)
last_name = serializers.CharField(max_length=30)
name = serializers.CharField(max_length=30)
password = serializers.CharField(max_length=20, style={'input_type': 'password'})
class Meta:
model = User
fields = ('id', 'url', 'first_name', 'last_name', 'name', 'username', 'email', 'password',
'total_exp_year', 'total_exp_month', 'voteup_count', 'is_featured',
'is_active', 'headline', 'description', 'profile_picture', )
def create(self, validated_data):
password = validated_data.pop('password', None)
instance = self.Meta.model(**validated_data)
if password is not None:
instance.set_password(password)
instance.save()
return instance
在view.py文件中的上述代码中,我使用了save()方法,而在serializers.py中则使用了save()或update()方法,请解释一下它们是如何工作的,并帮助我澄清save()和create()之间的区别。