Question

我尝试使用以下序列化程序进行嵌套写入 -

class UserProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = UserProfile
        fields = ('company', 'is_admin', 'last_modified', 'uuid')

class UserSerializer(serializers.ModelSerializer):
    profile = UserProfileSerializer()
    class Meta:
        model = User
        fields = ('url', 'username', 'email', 'profile')

    def create(self, validated_data):
        profile_data = validated_data.pop('profile')
        user = User.objects.create(**validated_data)
        for profile_data in profile_data:
            UserProfile.objects.create(user=user, **profile_data)
        return user

但是在做了一个帖子之后我得到了以下追溯 -

Traceback:
File "/opt/enterpass_app/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/opt/enterpass_app/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
  58.         return view_func(*args, **kwargs)
File "/opt/enterpass_app/lib/python2.7/site-packages/rest_framework/viewsets.py" in view
  87.             return self.dispatch(request, *args, **kwargs)
File "/opt/enterpass_app/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
  466.             response = self.handle_exception(exc)
File "/opt/enterpass_app/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
  463.             response = handler(request, *args, **kwargs)
File "/opt/enterpass_app/lib/python2.7/site-packages/rest_framework/mixins.py" in create
  21.         self.perform_create(serializer)
File "/opt/enterpass_app/lib/python2.7/site-packages/rest_framework/mixins.py" in perform_create
  26.         serializer.save()
File "/opt/enterpass_app/lib/python2.7/site-packages/rest_framework/serializers.py" in save
  180.             self.instance = self.create(validated_data)
File "/opt/enterpass/core/serializers.py" in create
  20.             UserProfile.objects.create(user=user, **profile_data)

Exception Type: TypeError at /api/users/
Exception Value: create() argument after ** must be a mapping, not unicode

我在这里http://www.django-rest-framework.org/api-guide/relations/#writable-nested-serializers逐字记录文档，所以不确定我错过了什么。可能我在用户上做OneToOneField而不是像示例这样的ForeignKey吗？

编辑 - 想要添加即使我得到上面的回溯它仍然发布到用户而不是用户个人资料。

Answer 1

对于在密钥上执行OneToOne映射的任何人，这是正确的代码 -

class UserProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = UserProfile
        fields = ('company', 'is_admin', 'last_modified', 'uuid')

class UserSerializer(serializers.ModelSerializer):
    profile = UserProfileSerializer()
    class Meta:
        model = User
        fields = ('url', 'username', 'email', 'profile')

    def create(self, validated_data):
        profile_data = validated_data.pop('profile')
        user = User.objects.create(**validated_data)
        UserProfile.objects.create(user=user, **profile_data)
        return user

请注意，以下内容已被删除for profile_data in profile_data:

原因是没有多个值。

**之后的create（）参数必须是映射，而不是unicode

1 个答案: