Question

我创建了视图MyView（CreateView）以及模型和表单并收到错误：

AttributeError: type object 'MyModel' has no attribute '_meta'

以下是我的观点：

class MyView(CreateView):
    model = MyModel
    template_name = "myapp/template1.html"

这是我的模特：

class MyModel(models.Model):
    free_day = models.CharField(max_length=255)
    name = models.CharField(max_length=255, blank=True, null=True)

    class Meta:
        verbose_name = _('MyModel')
        verbose_name_plural = _('MyModels')

    def __unicode__(self):
        return self.free_day

我的表格：

class MyInputForm(forms.ModelForm):

    class Meta:
        model = MyModel
        fields = ('user', 'free_day', )

这是我的追溯

Internal Server Error: /freedays/addvacation/
Traceback (most recent call last):
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/db/transaction.py", line 394, in inner
    return func(*args, **kwargs)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/views/generic/base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/views/generic/base.py", line 87, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 203, in get
    return super(BaseCreateView, self).get(request, *args, **kwargs)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 161, in get
    form_class = self.get_form_class()
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 119, in get_form_class
    return model_forms.modelform_factory(model, fields=self.fields)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/forms/models.py", line 539, in modelform_factory
    return type(form)(class_name, (form,), form_class_attrs)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/forms/models.py", line 284, in __new__
    opts.help_texts, opts.error_messages)
  File "/home/mariusz/.virtualenvs/urlop/local/lib/python2.7/site-packages/django/forms/models.py", line 184, in fields_for_model
    opts = model._meta
AttributeError: type object 'MyModel' has no attribute '_meta'

Answer 1

我无法确切地知道它为什么会出现这个错误（看起来MyModel实际上并不是你的模型类 - 你有没有在其他地方重新定义它？），但是有一个明显的问题：你的观点应该是引用您定义的表单，而不是直接引用模型。

class MyView(CreateView):
    form_class = MyInputForm

Answer 2

而不是以下内容：

def get(request,self):

您可以使用以下内容：

def get(self,request):

其他一切都应该没问题！

Answer 3

您是否尝试过将meta作为一个函数，看起来像这样;

class MyModel(models.Model):
    free_day = models.CharField(max_length=255)
    name = models.CharField(max_length=255, blank=True, null=True)

    def Meta():
        verbose_name = _('MyModel')
        verbose_name_plural = _('MyModels')

    def __unicode__(self):
        return self.free_day

AttributeError：类型对象'MyModel'没有属性'_meta'

3 个答案: