Admin conflict?

[ScottEAdams]

Latest version + django 1.11.10

I have some post_save_changed handlers on a model imported in AppConfig ready as they should. When clicking to create a new object through admin I get the error below.

Full trace

Traceback (most recent call last):
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 551, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 149, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/views/decorators/cache.py", line 57, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/sites.py", line 224, in inner
    return view(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/reversion/admin.py", line 177, in add_view
    return super(VersionAdmin, self).add_view(request, form_url, extra_context)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1508, in add_view
    return self.changeform_view(request, None, form_url, extra_context)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 67, in _wrapper
    return bound_func(*args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 149, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 63, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1408, in changeform_view
    return self._changeform_view(request, object_id, form_url, extra_context)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1462, in _changeform_view
    form = ModelForm(initial=initial)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/forms/models.py", line 298, in __init__
    self.instance = opts.model()
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/db/models/base.py", line 575, in __init__
    post_init.send(sender=cls, instance=self)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 193, in send
    for receiver in self._live_receivers(sender)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/fieldsignals/signals.py", line 71, in post_init_closure
    self.get_and_update_changed_fields(receiver, instance, fields)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/fieldsignals/signals.py", line 128, in get_and_update_changed_fields
    new_value = field.to_python(field.value_from_object(instance))
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 1036, in to_python
    params={'value': value},
ValidationError: [u"'None' value must be either True or False."]

[ScottEAdams]

Just tried without reversion VersionAdmin and getting the same

Traceback (most recent call last):
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 551, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 149, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/views/decorators/cache.py", line 57, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/sites.py", line 224, in inner
    return view(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1508, in add_view
    return self.changeform_view(request, None, form_url, extra_context)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 67, in _wrapper
    return bound_func(*args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 149, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/utils/decorators.py", line 63, in bound_func
    return func.__get__(self, type(self))(*args2, **kwargs2)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1408, in changeform_view
    return self._changeform_view(request, object_id, form_url, extra_context)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1462, in _changeform_view
    form = ModelForm(initial=initial)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/forms/models.py", line 298, in __init__
    self.instance = opts.model()
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/db/models/base.py", line 575, in __init__
    post_init.send(sender=cls, instance=self)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 193, in send
    for receiver in self._live_receivers(sender)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/fieldsignals/signals.py", line 71, in post_init_closure
    self.get_and_update_changed_fields(receiver, instance, fields)
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/fieldsignals/signals.py", line 128, in get_and_update_changed_fields
    new_value = field.to_python(field.value_from_object(instance))
  File ".virtualenvs/example-SpHsjm1P/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 1036, in to_python
    params={'value': value},
ValidationError: [u"'None' value must be either True or False."]

[ScottEAdams]

new_value = field.to_python(field.value_from_object(instance))

seems the issue is with BooleanField that is None because it hasn't been created yet

[craigds]

aha, good find 🥇We can probably work around that.

That thing where django's admin instantiates an empty model has caused so many little issues over the years.