object has no attribute '_changed_fields'

[laurentpayot]

After commit 5cb3a5b (fixing #48) I get the following internal server error when posting forms:

Traceback (most recent call last):
  File "/usr/local/lib/python3.3/dist-packages/django/core/handlers/base.py", line 114, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/views/generic/base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/utils/decorators.py", line 29, in _wrapper
    return bound_func(*args, **kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/contrib/auth/decorators.py", line 25, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/utils/decorators.py", line 25, in bound_func
    return func(self, *args2, **kwargs2)
  File "/opt/myproject/django/www/views.py", line 426, in dispatch
    return super().dispatch(*args, **kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/views/generic/base.py", line 87, in dispatch
    return handler(request, *args, **kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/views/generic/edit.py", line 228, in post
    return super(BaseUpdateView, self).post(request, *args, **kwargs)
  File "/usr/local/lib/python3.3/dist-packages/django/views/generic/edit.py", line 170, in post
    if form.is_valid():
  File "/usr/local/lib/python3.3/dist-packages/django/forms/forms.py", line 129, in is_valid
    return self.is_bound and not bool(self.errors)
  File "/usr/local/lib/python3.3/dist-packages/django/forms/forms.py", line 121, in errors
    self.full_clean()
  File "/usr/local/lib/python3.3/dist-packages/django/forms/forms.py", line 275, in full_clean
    self._post_clean()
  File "/usr/local/lib/python3.3/dist-packages/mongodbforms-0.2.2-py3.3.egg/mongodbforms/documents.py", line 396, in _post_clean
    f.name not in self.instance._changed_fields:
AttributeError: 'Book' object has no attribute '_changed_fields'

So I'm sticking to fb57c72 and everything is fine with this old one.

[jschrewe]

Did you change anything on the document? I think that's the only thing I didn't really test. It should handle the missing attribute gracefully now though and completely fall back to the old behaviour.