python-DRF无法发布传递主键的数据
我开始与Django合作,我遵循了Django Rest框架网站上提供的教程,现在我正在尝试修改教程,以完成更复杂的工作 我正在尝试为社交网络创建一个“类似”的系统。用户可以创建帖子(UserPosts)和其他用户的帖子 我通过以下方式创建新的用户帖子(使用命令行):python-DRF无法发布传递主键的数据,python,django,django-rest-framework,Python,Django,Django Rest Framework,我开始与Django合作,我遵循了Django Rest框架网站上提供的教程,现在我正在尝试修改教程,以完成更复杂的工作 我正在尝试为社交网络创建一个“类似”的系统。用户可以创建帖子(UserPosts)和其他用户的帖子 我通过以下方式创建新的用户帖子(使用命令行): http -a admin:Pass1234 POST http://127.0.0.1:8000/posts/ description="I'm just a random comment" 一切都很好。 问题是当我试图创建一
http -a admin:Pass1234 POST http://127.0.0.1:8000/posts/ description="I'm just a random comment"
一切都很好。
问题是当我试图创建一个类似的实例时。在这种情况下,我需要传递一个UserPost id,因此我正在执行与创建新注释相同的操作:
http -a admin:Pass1234 POST http://127.0.0.1:8000/likes/ post="1"
但当我这样做时,我会得到以下错误:
"post": {
"non_field_errors": [
"Invalid data. Expected a dictionary, but got unicode."
]
}
模型如下:
class UserPost(models.Model):
owner = models.ForeignKey('auth.User', related_name='posts', on_delete=models.CASCADE)
timestamp = models.DateTimeField(auto_now_add=True)
description = models.CharField(max_length=100, blank=True, default='')
def save(self, *args, **kwargs):
options = self.description and {'description': self.description} or {}
super(UserPost, self).save(*args, **kwargs)
class Meta:
ordering = ('timestamp',)
class Like(models.Model):
owner = models.ForeignKey('auth.User', related_name='likes', on_delete=models.CASCADE)
post = models.ForeignKey(UserPost, related_name='likes', on_delete=models.CASCADE)
timestamp = models.DateTimeField(auto_now_add=True)
def save(self, *args, **kwargs):
options = self.post and {'post': self.post}
super(Like, self).save(*args, **kwargs)
class Meta:
ordering = ('timestamp',)
序列化程序:
class UserPostSerializer(serializers.HyperlinkedModelSerializer):
owner = serializers.ReadOnlyField(source='owner.id')
class Meta:
model = UserPost
fields = ('url', 'id', 'description', 'owner', 'timestamp')
class LikeSerializer(serializers.ModelSerializer):
owner = serializers.ReadOnlyField(source='owner.id')
post = UserPostSerializer(source='post')
class Meta:
model = Like
fields = ('id', 'owner', 'post', 'timestamp')
意见如下:
class PostViewSet(viewsets.ModelViewSet):
queryset = UserPost.objects.all()
serializer_class = UserPostSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly,
IsOwnerOrReadOnly,)
def perform_create(self, serializer):
serializer.save(owner=self.request.user)
class LikeViewSet(viewsets.ModelViewSet):
queryset = Like.objects.all()
serializer_class = LikeSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly, IsOwnerOrReadOnly,)
def perform_create(self, serializer):
serializer.save(owner=self.request.user)
路由器和URL:
router = DefaultRouter()
router.register(r'posts', views.PostViewSet)
router.register(r'users', views.UserViewSet)
router.register(r'likes', views.LikeViewSet)
urlpatterns = [
url(r'^', include(router.urls)),
url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]
知道发生了什么吗
谢谢 您需要从
像序列化程序那样的中删除post=UserPostSerializer
:
class LikeSerializer(serializers.ModelSerializer):
owner = serializers.ReadOnlyField(source='owner.id')
class Meta:
model = Like
fields = ('id', 'owner', 'post', 'timestamp')
因此,django rest框架对相关的UserPost使用PrimaryKeyRelatedField
(这是使用ModelSerializer的相关模型的默认值)。
然后,您可以使用post=“1”
作为参数创建类似的条目