'CurrentUserDefault' 对象有没有属性 '用户'

Question

我想基于登录用户过滤串行领域POST。

serializers.py

class WidgetListSerializer(EncryptedLookupModelSerializer): 

    owner = serializers.HiddenField(default=serializers.CurrentUserDefault()) 
    parent = serializers.SlugRelatedField(
     slug_field='name', 
     queryset=WidgetList.objects.filter(owner=serializers.CurrentUserDefault())) 

    class Meta: 
     model=WidgetList 
     fields = ('id', 'name', 'description', 'owner', 'parent') 

回溯

Traceback: 
File "/opt/myproject_app/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    119.     resolver_match = resolver.resolve(request.path_info) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/core/urlresolvers.py" in resolve 
    365.    for pattern in self.url_patterns: 
File "/opt/myproject_app/lib/python2.7/site-packages/django/core/urlresolvers.py" in url_patterns 
    401.   patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/core/urlresolvers.py" in urlconf_module 
    395.    self._urlconf_module = import_module(self.urlconf_name) 
File "/usr/local/lib/python2.7/importlib/__init__.py" in import_module 
    37.  __import__(name) 
File "/opt/myproject/myproject/urls.py" in <module> 
    20. from gui import views 
File "/opt/myproject/gui/views.py" in <module> 
    20. from api.serializers import * 
File "/opt/myproject/api/serializers.py" in <module> 
    52. class WidgetListSerializer(EncryptedLookupModelSerializer): 
File "/opt/myproject/api/serializers.py" in WidgetListSerializer 
    57.   queryset=WidgetList.objects.filter(owner=serializers.CurrentUserDefault())) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/manager.py" in manager_method 
    127.     return getattr(self.get_queryset(), name)(*args, **kwargs) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/query.py" in filter 
    679.   return self._filter_or_exclude(False, *args, **kwargs) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/query.py" in _filter_or_exclude 
    697.    clone.query.add_q(Q(*args, **kwargs)) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/sql/query.py" in add_q 
    1310.   clause, require_inner = self._add_q(where_part, self.used_aliases) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/sql/query.py" in _add_q 
    1338.      allow_joins=allow_joins, split_subq=split_subq, 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/sql/query.py" in build_filter 
    1156.   value, lookups, used_joins = self.prepare_lookup_value(value, lookups, can_reuse, allow_joins) 
File "/opt/myproject_app/lib/python2.7/site-packages/django/db/models/sql/query.py" in prepare_lookup_value 
    1003.    value = value() 
File "/opt/myproject_app/lib/python2.7/site-packages/rest_framework/fields.py" in __call__ 
    242.   return self.user 

Exception Type: AttributeError at /api/widgetlists/ 
Exception Value: 'CurrentUserDefault' object has no attribute 'user' 

Answer 1

为了能够使用登录用户，您需要首先访问请求对象（request.user）

下面是一个示例，您可以如何自定义您的序列化程序：

class WidgetListSerializer(EncryptedLookupModelSerializer): 
    # ... 

    def __init__(self, *args, **kwargs): 
     user = kwargs['context']['request'].user 

     super(WidgetListSerializer, self).__init__(*args, **kwargs) 
     self.fields['owner'].default = user 
     self.fields['parent'].queryset = WidgetList.objects.filter(owner=user)