Django：类视图中模型对象“没有属性'_meta'”

Question

大家好，我正在使用基于类的视图，并且为了测试网站，我按照文档设置基于类的视图。对于一个基于下面项目模型的项目网站，我想要创建一个简单的 CRUD 应用程序。

models.py

class Project(models.Manager):
    name =  models.CharField(_('Name of the Project'), max_length = 100,)
    slug = models.SlugField(max_length=100,)
    ...

视图.py

from django.views.generic.edit import CreateView, UpdateView, DeleteView
from django.core.urlresolvers import reverse_lazy
from project.models import Project

class ProjectCreate(CreateView):
    model = Project

class ProjectUpdate(UpdateView):
    model = Project

当我现在加载\project\add，它应该调用ProjectCreate类时，我收到以下错误消息：type object 'Project' has no attribute '_meta' 我不明白为什么。模型类通常不需要元信息。在其他基于类的项目中，我没有遇到这个问题。

感谢您的建议！ Traceback

Django Version: 1.4.1
Python Version: 2.7.1

Traceback:
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/views/generic/base.py" in view
  48.             return self.dispatch(request, *args, **kwargs)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch
  69.         return handler(request, *args, **kwargs)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/views/generic/edit.py" in get
  168.         return super(BaseCreateView, self).get(request, *args, **kwargs)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/views/generic/edit.py" in get
  130.         form_class = self.get_form_class()
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/views/generic/edit.py" in get_form_class
  89.             return model_forms.modelform_factory(model)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/forms/models.py" in modelform_factory
  407.     return form_metaclass(class_name, (form,), form_class_attrs)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/forms/models.py" in __new__
  206.                                       opts.exclude, opts.widgets, formfield_callback)
File "/Users/neurix/Development/vir_project_2.0/lib/python2.7/site-packages/django/forms/models.py" in fields_for_model
  146.     opts = model._meta

Exception Type: AttributeError at /project/add/
Exception Value: type object 'Project' has no attribute '_meta'

- neurix

Answer 1

改变：

class Project(models.Manager)

收件人：

class Project(models.Model)

因为 models.Model 是实际的类，你必须继承它来创建自定义模型，而管理器实际上是用于覆盖与模型相关的数据库操作。

- Rostyslav Dzinko

---

还有其他东西缺失吗？因为我按照你建议的做了同样的事情，但它并没有解决属性错误。 - hlkstuv_23900

“models.Model” 的哪个模块应该被导入？有很多选项，但似乎我的自定义模型不适用于它们中的任何一个。 - KasparTr