我有一个get请求，但是它在heroku上失败了，出现了这个错误:
AttributeError: 'WSGIRequest' object has no attribute 'get'
我没有找到它的根本原因，以下是我的观点:
class PostDetail(generics.GenericAPIView):
"""Blog post details"""
queryset = Post.objects.all()
serializer_class = serializers.PostSerializer
authentication_classes = (JWTAuthentication,)
permission_classes = (PostsProtectOrReadOnly, IsMentorOnly,)
lookup_field = 'slug'
def get_post_object(self, slug):
post = get_blog_by_slug(slug)
return post
def get(self, request, slug):
post = self.get_post_object(slug)
if not post:
return response.Response({
'errors': _('Sorry, Blog post with the specified slug does'
'not exist')
}, status=status.HTTP_404_NOT_FOUND)
# track views of a viewed blog post.
ip_address = get_ip_address(request)
obj = CustomIPAddress.objects.create(address=ip_address)
post.address_views.add(obj)
serializer = self.serializer_class(post, context=request)
return response.Response(serializer.data, status=status.HTTP_200_OK)
上面调用的方法:
def get_blog_by_slug(slug: str):
"""Get post by slug."""
try:
obj = Post.objects.get(slug=slug)
return obj
except Post.DoesNotExist:
return None
def get_ip_address(request):
"""get ip address."""
try:
client_ip, is_routable = get_client_ip(request)
if client_ip is None:
return uuid.uuid4()
else:
return client_ip
except AttributeError:
return uuid.uuid4()
except:
return uuid.uuid4()
我想知道为什么它在本地工作，但在heroku服务器上得到这个错误。
编辑:
序列化器如下:
class PostSerializer(serializers.ModelSerializer):
"""Post Serializer"""
owner = UserProfile(read_only=True)
tags = TagSerializer(many=True)
comments = CommentSerializer(many=True, read_only=True)
slug = serializers.SlugField(read_only=True)
class Meta:
model = Post
fields = ('id', 'title', 'body', 'owner', 'slug',
'comments', 'tags', 'description', 'image', 'bookmarks',
'created', 'modified', 'blog_views', 'blog_likes',
'read_time',)
def create(self, validated_data):
"""Create a blog post in a customized way."""
tags = validated_data.pop('tags', [])
post = Post.objects.create(**validated_data,
owner=self.context.user)
for tag in tags:
tag_qs = Tag.objects.filter(name__iexact=tag.get('name'))
if tag_qs.exists():
tag_obj = tag_qs.first()
else:
tag_obj = Tag.objects.create(
name=tag.get('name'),
owner=self.context.user, )
post.tags.add(tag_obj)
return post
def update(self, instance, validated_data):
"""Update blog posts."""
tags = validated_data.pop('tags', [])
instance = super(PostSerializer, self).update(instance, validated_data)
if len(tags):
for tag in tags:
tag_qs = Tag.objects.filter(name__iexact=tag.get('name'))
if tag_qs.exists():
tag = tag_qs.first()
else:
tag = Tag.objects.create(name=tag.get('name'),
owner=self.context.user, )
instance.tags.clear()
instance.tags.add(tag)
return instance
来自heroku的完整日志:
2021-10-27T19:51:08.300812+00:00 app[web.1]: Internal Server Error: /api/v1/blogs/posts/logical-designs-2021-10-23-180259622506-06419c8c-6eee-4cd0-a328-78f3735700ee/
2021-10-27T19:51:08.300822+00:00 app[web.1]: Traceback (most recent call last):
2021-10-27T19:51:08.300823+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/request.py", line 409, in __getattr__
2021-10-27T19:51:08.300823+00:00 app[web.1]: return getattr(self._request, attr)
2021-10-27T19:51:08.300824+00:00 app[web.1]: AttributeError: 'WSGIRequest' object has no attribute 'get'
2021-10-27T19:51:08.300824+00:00 app[web.1]:
2021-10-27T19:51:08.300825+00:00 app[web.1]: During handling of the above exception, another exception occurred:
2021-10-27T19:51:08.300825+00:00 app[web.1]:
2021-10-27T19:51:08.300825+00:00 app[web.1]: Traceback (most recent call last):
2021-10-27T19:51:08.300826+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
2021-10-27T19:51:08.300826+00:00 app[web.1]: response = get_response(request)
2021-10-27T19:51:08.300826+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/core/handlers/base.py", line 179, in _get_response
2021-10-27T19:51:08.300827+00:00 app[web.1]: response = wrapped_callback(request, *callback_args, **callback_kwargs)
2021-10-27T19:51:08.300827+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/sentry_sdk/integrations/django/views.py", line 67, in sentry_wrapped_callback
2021-10-27T19:51:08.300828+00:00 app[web.1]: return callback(request, *args, **kwargs)
2021-10-27T19:51:08.300828+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
2021-10-27T19:51:08.300828+00:00 app[web.1]: return view_func(*args, **kwargs)
2021-10-27T19:51:08.300829+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/views/generic/base.py", line 73, in view
2021-10-27T19:51:08.300829+00:00 app[web.1]: return self.dispatch(request, *args, **kwargs)
2021-10-27T19:51:08.300829+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/views.py", line 505, in dispatch
2021-10-27T19:51:08.300829+00:00 app[web.1]: response = self.handle_exception(exc)
2021-10-27T19:51:08.300830+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/views.py", line 465, in handle_exception
2021-10-27T19:51:08.300830+00:00 app[web.1]: self.raise_uncaught_exception(exc)
2021-10-27T19:51:08.300830+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
2021-10-27T19:51:08.300831+00:00 app[web.1]: raise exc
2021-10-27T19:51:08.300831+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/views.py", line 502, in dispatch
2021-10-27T19:51:08.300831+00:00 app[web.1]: response = handler(request, *args, **kwargs)
2021-10-27T19:51:08.300832+00:00 app[web.1]: File "/app/blog/views.py", line 56, in get
2021-10-27T19:51:08.300832+00:00 app[web.1]: return response.Response(serializer.data, status=status.HTTP_200_OK)
2021-10-27T19:51:08.300832+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 562, in data
2021-10-27T19:51:08.300833+00:00 app[web.1]: ret = super().data
2021-10-27T19:51:08.300833+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 260, in data
2021-10-27T19:51:08.300834+00:00 app[web.1]: self._data = self.to_representation(self.instance)
2021-10-27T19:51:08.300834+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 529, in to_representation
2021-10-27T19:51:08.300834+00:00 app[web.1]: ret[field.field_name] = field.to_representation(attribute)
2021-10-27T19:51:08.300835+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 677, in to_representation
2021-10-27T19:51:08.300835+00:00 app[web.1]: return [
2021-10-27T19:51:08.300835+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 678, in <listcomp>
2021-10-27T19:51:08.300836+00:00 app[web.1]: self.child.to_representation(item) for item in iterable
2021-10-27T19:51:08.300836+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 529, in to_representation
2021-10-27T19:51:08.300836+00:00 app[web.1]: ret[field.field_name] = field.to_representation(attribute)
2021-10-27T19:51:08.300837+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 529, in to_representation
2021-10-27T19:51:08.300837+00:00 app[web.1]: ret[field.field_name] = field.to_representation(attribute)
2021-10-27T19:51:08.300837+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/serializers.py", line 529, in to_representation
2021-10-27T19:51:08.300838+00:00 app[web.1]: ret[field.field_name] = field.to_representation(attribute)
2021-10-27T19:51:08.300838+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/fields.py", line 1586, in to_representation
2021-10-27T19:51:08.300838+00:00 app[web.1]: request = self.context.get('request', None)
2021-10-27T19:51:08.300839+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/rest_framework/request.py", line 411, in __getattr__
2021-10-27T19:51:08.300839+00:00 app[web.1]: return self.__getattribute__(attr)
2021-10-27T19:51:08.300839+00:00 app[web.1]: AttributeError: 'Request' object has no attribute 'get'
不能将request直接作为context=…发送给序列化器。上下文应该是一个类似字典的对象。
你所能做的是构造一个字典，将request映射到请求，如:
serializer = self.serializer_class(post, context={'request':request})你可以这样写:
class PostSerializer(serializers.ModelSerializer):
# ⋮
def create(self, validated_data):
"""Create a blog post in a customized way."""
tags = validated_data.pop('tags', [])
post = Post.objects.create(**validated_data, owner=self.context['request'].user)
# ⋮