I have a Django project with multiple apps set up like:
myproject/
- apps/
- app1/
- app2/
Everything works when running python manage.py runserver until I need to share models in app1 with app2. It seems this should be as simple as adding a standard import statement in the appropriate file in app2, e.g:
# myproject/apps/app2/callback_funcs/sub_functions.py
from apps.app1.models import SharedDataModel
Unfortunately, as soon as I add the import statement, I get the error django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
I tried solutions given here, here, and here, yet the problem persists.
All apps are in my INSTALLED_APPS list and being read correctly (again, as long as I exclude the problematic import statement above). I thought the order of the apps in the INSTALLED_APPS list might be an issue (I've seen instructions elsewhere that state certain apps need to be first) but this doesn't seem to affect the results.
I have:
INSTALLED_APPS = [
...
'apps.app1',
'apps.app2.app',
...
]
app1 is a standard Django app, app2 is a Django Plotly Dash app and has an app file which contains:
# myproject/apps/app2/app.py
from django_plotly_dash import DjangoDash
from .layout import layout
from .callbacks import register_callbacks
app = DjangoDash("app2")
app.layout = layout
register_callbacks(app)
Interestingly, I imported the model into another, non-Django Plotly Dash app, and it didn't give me this error. Perhaps the issue is stemming from this library?
I'm running Python 3.9.16, Django 3.2.16, and Django Plotly Dash 2.1.3.
Full traceback is here:
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/threading.py", line 980, in _bootstrap_inner
self.run()
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/threading.py", line 917, in run
self._target(*self._args, **self._kwargs)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/utils/autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/core/management/commands/runserver.py", line 110, in inner_run
autoreload.raise_last_exception()
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/utils/autoreload.py", line 87, in raise_last_exception
raise _exception[1]
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/core/management/__init__.py", line 375, in execute
autoreload.check_errors(django.setup)()
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/utils/autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/apps/registry.py", line 91, in populate
app_config = AppConfig.create(entry)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/apps/config.py", line 224, in create
import_module(entry)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 850, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "/home/ubuntu/GitHub/myproject/apps/app2/sub_module.py", line 3, in <module>
from .callbacks import register_callbacks
File "/home/ubuntu/GitHub/myproject/apps/app2/callbacks.py", line 11, in <module>
from .callback_funcs import sub_funcs
File "/home/ubuntu/GitHub/myproject/apps/app2/callback_funcs/sub_funcs.py", line 5, in <module>
from apps.app1.models import SharedDataModel
File "/home/ubuntu/GitHub/myproject/apps/app1/models.py", line 8, in <module>
class SharedDataModel(models.Model):
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/db/models/base.py", line 108, in __new__
app_config = apps.get_containing_app_config(module)
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/apps/registry.py", line 253, in get_containing_app_config
self.check_apps_ready()
File "/home/ubuntu/miniconda3/envs/myproject/lib/python3.9/site-packages/django/apps/registry.py", line 136, in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
