在**之后的create()参数必须是映射,而不是unicode [英] create() argument after ** must be a mapping, not unicode

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本文介绍了在**之后的create()参数必须是映射,而不是unicode的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

  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在profile_data中:
UserProfile.objects.create(user = user,** profile_data)
返回用户

但是在做了一个帖子后,我得到以下追溯 -

 追溯:
文件/选择/ enterpass_app /lib/python2.7/site-packages/django/core/handlers/base.pyin get_response
132. response = wrapped_callback(request,* callback_args,** callback_kwargs)
文件/ opt /include/app/lib/python2.7/site-packages/django/views/decorators/csrf.pyin wrapped_view
58. return view_func(* args,** kwargs)
文件/ opt /在查看
87. return self.dispatch(request,* args,** kwargs)
文件/ opt / enterpass_app中输入enterpass_app / lib / python2.7 / site-packages / rest_framework / viewsets.py /lib/python2.7/site-packages/rest_framework/views.py在调度
466. response = self.handle_exception(exc)
文件/opt/enterpass_app/lib/python2.7/在dispatch
463中的site-packages / rest_framework / views.pyresponse = handler(request,* args,** kwargs)
文件/opt/enterpass_app/lib/python2.7/site-创建
中的packages / rest_framework / mixins.py 21. self.perform_create(serializer)
文件/ opt / enterpass_app / l ib / python2.7 / site-packages / rest_framework / mixins.pyin perform_create
26. serializer.save()
文件/opt/enterpass_app/lib/python2.7/site-packages/ save_framework / serializers.py保存
180. self.instance = self.create(validated_data)
创建
中的/opt/enterpass/core/serializers.py文件20. UserProfile .objects.create(user = user,** profile_data)

异常类型:/ api / users /
中的TypeError异常值:**之后的create()参数必须是映射,不是unicode

我在这里遵循文档 http:// www。 django-rest-framework.org/api-guide/relations/#writable-nested-serializers 逐字记录,所以不知道我错过了什么。可能我在做一个OneToOneField的用户不是一个ForeignKey像这个例子?



编辑 - 想添加,即使我得到上述追溯它仍然发布对于用户而不是用户个人资料。

解决方案

对于在密钥上执行OneToOne映射的人来说,这是正确的代码 - p>

  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.obje cts.create(user = user,** profile_data)
return user

请注意profile_data中的profile_data的以下内容被删除



原因是没有多个值。


I'm attempting to do a nested write using the following serializer -

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

But after doing a post I get the following traceback -

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

I'm following the documentation here http://www.django-rest-framework.org/api-guide/relations/#writable-nested-serializers verbatim so not sure what I'm missing. Possibly that I'm doing a OneToOneField on the User not a ForeignKey like the example?

edit - want to add that even though I get the above Traceback it does still post to User but not to User Profile.

解决方案

For anyone doing a OneToOne mapping on a key this is the correct code -

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

Note that the following is removed for profile_data in profile_data:

Reason being there isn't multiple values.

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