get_application_model incompatible with Django 1.7

[edemocracy]

get_application_model works fine with Django 1.6.5, but fails with 1.7.
Application = get_application_model() is executed at the top level of the application's model.py

Traceback (most recent call last):
  File "manage.py", line 12, in <module>
    execute_from_command_line(sys.argv)
  File "<pythonpath>/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "<pythonpath>/site-packages/django/core/management/__init__.py", line 354, in execute
    django.setup()
  File "<pythonpath>/site-packages/django/__init__.py", line 21, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "<pythonpath>/site-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "<pythonpath>/site-packages/django/apps/config.py", line 197, in import_models
    self.models_module = import_module(models_module_name)
  File "<pythonpath>/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "<projpath>/myapp/models.py", line 35, in <module>
    Application = get_application_model()
  File "<pythonpath>/site-packages/oauth2_provider/models.py", line 241, in get_application_model
    app_model = get_model(app_label, model_name)
  File "<pythonpath>/site-packages/django/apps/registry.py", line 199, in get_model
    self.check_models_ready()
  File "<pythonpath>/site-packages/django/apps/registry.py", line 131, in check_models_ready
    raise AppRegistryNotReady("Models aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet.

[edemocracy]

I've found this workaround:

from oauth2_provider.settings import oauth2_settings
APPLICATION_MODEL = oauth2_settings.APPLICATION_MODEL

and replace all

field = models.ForeignKey(Application,...)

with

field = models.ForeignKey(APPLICATION_MODEL,...)

[masci]

@edemocracy could you provide a snippet of code causing the error?

[maurizio-mariani]

Still this bug in django>=1.9.1
This happens when try to use get_application_model() as foreign key
models.ForeignKey(get_application_model(), null=True, blank=True)