django 无法识别模型的默认对象管理器答案

【问题标题】：django not reconizing default objects manager for modeldjango 无法识别模型的默认对象管理器
【发布时间】：2018-08-07 15:39:00
【问题描述】：

我正在运行我的 django 服务器，我得到一个 500 错误代码

AttributeError: type object 'EventPurpose' has no attribute 'objects'

但是，该模型已正确创建，并且具有相同实现的其他模型工作正常。这是从模型创建到使用的完整代码。

模型创建

class EventPurpose(models.Model):
    purpose = models.CharField(max_length=200)

查看

class GetAllSettingsObjects(APIView):

    def get(self, request, format=None):
        eventpurposequeryset = EventPurpose.objects.all()

那是我得到错误：完全错误

line 24, in get
    eventpurposequeryset = EventPurpose.objects.all()
AttributeError: type object 'EventPurpose' has no attribute 'objects'
[27/Feb/2018 20:57:55] "GET /<super cool url object that I dont want to share with you>/ HTTP/1.1" 500 16404

我还没有弄清楚，所以这里是完整的追溯：

Internal Server Error: /api/dependancy/suitsadmin/settings/
Traceback (most recent call last):
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
    return view_func(*args, **kwargs)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/views.py", line 494, in dispatch
    response = self.handle_exception(exc)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/views.py", line 454, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/local/lib/python2.7/site-packages/rest_framework/views.py", line 491, in dispatch
    response = handler(request, *args, **kwargs)
  File "/home/rickus/Documents/softwareProjects/211hospitality/suitsandtables/backend/virtualsuits/suitsandtables/suitsandtablessettingsapp/views.py", line 24, in get
    eventpurposequeryset = EventPurpose.objects.all()
AttributeError: type object 'EventPurpose' has no attribute 'objects'
[28/Feb/2018 00:52:12] "GET /api/dependancy/suitsadmin/settings/ HTTP/1.1" 500 19430

请帮忙。

拥抱和亲吻

【问题讨论】：

您是否导入了 EventPurpose？尝试将 from .models import EventPurpose 放入您的views.py
@HenryH 是的，我导入了模型，因为我正在使用所有这些模型from models import *
看起来你确实在其他地方覆盖了 EventPurpose
@Linovia 我彻底检查了该网站等（假设 Django 代码按预期工作）它相当令人沮丧，哈哈
打印一些语句，例如 print(type(EventPurpose)) 以查看它的真正类型。可能是您定义了一个名为 EventPurpose 的视图，这将使导入无效。

标签： python django django-rest-framework models attributeerror

【解决方案1】：

所以我找到了解决方案。这对我来说毫无意义，但我将EventPurpose 称为eventpurpose 再次不知道为什么会这样并且会喜欢一个理由。

我从这个问题中得到了答案：type object 'X' has no attribute 'objects'

这就是我所做的

from models import EventPurpose as eventpurpose

【讨论】：