django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet. when adding a featured image using EXTRA_MODELS_FIELDS

[wimfeijen]

Using
EXTRA_MODEL_FIELDS = (
(
"mezzanine.pages.models.RichTextPage.featured_image",
"mezzanine.core.fields.FileField",
("featured image",),
{
"blank": True,
"null": True,
"upload_to": "afbeeldingen",
"format": "Image",
"max_length": 255,
},
),
)
gives us an error, see traceback below.

We are using:
filebrowser-safe==1.1.1
Mezzanine==6.0.0

Traceback (most recent call last):
File "/home/django/projects/veiligpracticum/manage.py", line 16, in
execute_from_command_line(sys.argv)
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/core/management/init.py", line 419, in execute_from_command_line
utility.execute()
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/core/management/init.py", line 395, in execute
django.setup()
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/init.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/apps/registry.py", line 91, in populate
app_config = AppConfig.create(entry)
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/apps/config.py", line 224, in create
import_module(entry)
File "/usr/lib/python3.9/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 790, in exec_module
File "", line 228, in _call_with_frames_removed
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/boot/init.py", line 76, in
fields = parse_extra_model_fields(getattr(settings, "EXTRA_MODEL_FIELDS", []))
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/boot/init.py", line 63, in parse_extra_model_fields
field_class = import_field(entry[1])
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/boot/init.py", line 44, in import_field
return import_dotted_path(fully_qualified)
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/utils/importing.py", line 21, in import_dotted_path
module = import_module(module_path)
File "/usr/lib/python3.9/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 790, in exec_module
File "", line 228, in _call_with_frames_removed
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/core/fields.py", line 104, in
FileBrowseField = import_dotted_path(
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/utils/importing.py", line 21, in import_dotted_path
module = import_module(module_path)
File "/usr/lib/python3.9/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 790, in exec_module
File "", line 228, in _call_with_frames_removed
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/filebrowser_safe/fields.py", line 15, in
from filebrowser_safe.base import FieldFileObject
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/filebrowser_safe/base.py", line 12, in
from filebrowser_safe.functions import get_directory, get_file_type, path_strip
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/filebrowser_safe/functions.py", line 13, in
from mezzanine.utils.sites import current_site_id
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/mezzanine/utils/sites.py", line 6, in
from django.contrib.sites.models import Site
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/contrib/sites/models.py", line 78, in
class Site(models.Model):
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/db/models/base.py", line 108, in new
app_config = apps.get_containing_app_config(module)
File "/var/virtualenvs/veiligpracticum/lib/python3.9/site-packages/django/apps/registry.py", line 253, in get_containing_app_config
self.check_apps_ready()
File "/var/virtualenvs/veiligpracticum/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.

[wimfeijen]

In /filebrowser_safe/functions.py, the changes below seem to solve this:

from django.core.exceptions import AppRegistryNotReady

try:
from mezzanine.utils.sites import current_site_id
except AppRegistryNotReady: