Python django rest框架通过OneToOneField查找\u字段
期望的行为Python django rest框架通过OneToOneField查找\u字段,python,django,rest,django-rest-framework,Python,Django,Rest,Django Rest Framework,期望的行为 用户查找通过用户名进行:/api/users/randall 扬声器查找也通过用户名进行:/api/speakers/randall 约束 并非所有用户都是演讲者。所有扬声器都是用户 型号.py from django.contrib.auth.models import User class Speaker(models.Model): user = models.OneToOneField(User) class UserSerializer(serializers.
用户查找通过用户名进行:
/api/users/randall
扬声器查找也通过用户名进行:
/api/speakers/randall
约束并非所有用户都是演讲者。所有扬声器都是用户 型号.py
from django.contrib.auth.models import User
class Speaker(models.Model):
user = models.OneToOneField(User)
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
lookup_field = 'username'
class SpeakerSerializer(serializers.HyperlinkedModelSerializer):
user = serializers.HyperlinkedRelatedField(
view_name='user-detail',
read_only=True,
lookup_field='username'
)
class Meta:
model = Speaker
lookup_field = 'user'
class UserViewSet(viewsets.ModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
lookup_field = 'username'
class SpeakerViewSet(viewsets.ModelViewSet):
queryset = Speaker.objects.all().select_related('user')
serializer_class = SpeakerSerializer
lookup_field = "user"
序列化程序.py
from django.contrib.auth.models import User
class Speaker(models.Model):
user = models.OneToOneField(User)
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
lookup_field = 'username'
class SpeakerSerializer(serializers.HyperlinkedModelSerializer):
user = serializers.HyperlinkedRelatedField(
view_name='user-detail',
read_only=True,
lookup_field='username'
)
class Meta:
model = Speaker
lookup_field = 'user'
class UserViewSet(viewsets.ModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
lookup_field = 'username'
class SpeakerViewSet(viewsets.ModelViewSet):
queryset = Speaker.objects.all().select_related('user')
serializer_class = SpeakerSerializer
lookup_field = "user"
视图.py
from django.contrib.auth.models import User
class Speaker(models.Model):
user = models.OneToOneField(User)
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'groups')
lookup_field = 'username'
class SpeakerSerializer(serializers.HyperlinkedModelSerializer):
user = serializers.HyperlinkedRelatedField(
view_name='user-detail',
read_only=True,
lookup_field='username'
)
class Meta:
model = Speaker
lookup_field = 'user'
class UserViewSet(viewsets.ModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
lookup_field = 'username'
class SpeakerViewSet(viewsets.ModelViewSet):
queryset = Speaker.objects.all().select_related('user')
serializer_class = SpeakerSerializer
lookup_field = "user"
我尝试了各种不同的lookup_字段和序列化器类型调用,但都没有成功。如果没有更多的代码,这可能是不可能的。我只是想知道我能走什么方向
谢谢 您尝试过这种方法吗
class SpeakerViewSet(viewsets.ModelViewSet):
queryset = Speaker.objects.all().select_related('user')
serializer_class = SpeakerSerializer
filter_backends = (filters.DjangoFilterBackend,)
filter_fields = ('user', 'user__username',)
我就是这样设法破解的 models.py 序列化程序.py view.py
您是否尝试过在
lookup\u字段中使用双下划线来查看这是否可行?它类似于queryset过滤器。我尝试过使用lookup\u field=“user\uu username”
,但它不起作用。我曾尝试在模型和视图上使用该选项,但均无效:('Speaker'对象没有属性'user\u username'
@ranman你想要什么?你想序列化一个相关对象吗?我想能够通过与演讲者相关联的用户的用户名来查找演讲者对象'Speaker'对象没有属性'user\u username'
似乎不起作用。我可能有即时消息打错了。实际上它不起作用——出于某种原因,这不允许两件事:当你创建一个新的演讲者时,用户字段不能再被写入,演讲者不能再呈现在与它有关系的项目上。我怎样才能重现你的错误?我的意思是我试图通过python创建一个新的演讲者shell,它会顺利通过,如果您试图通过api
创建扬声器
,那么用户
字段被标记为只读
,这就是它不起作用的原因。我还创建了一个虚拟模型,将OneToOneField
添加到扬声器
,这也适用于ModelSerializere> 而HyperlinkedModelSerializer
对于第二个字段,我只需要用asHyperlinkedRelatedField
和lookup\u field='user\uu username'
重新定义SpeakerSerializer
字段的SpeakerSerializer
字段。