admin_interface/settings.py
import django
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
def check_installed_app(app, max_dj_version=None):
dj_version = django.VERSION
installed_apps = settings.INSTALLED_APPS
if max_dj_version is None:
if app not in installed_apps:
raise ImproperlyConfigured(
"'{}' is required, " "add it to settings.INSTALLED_APPS.".format(app)
)
elif dj_version < max_dj_version:
if app not in installed_apps:
raise ImproperlyConfigured(
"'{}' is required before django {}.{}, "
"add it to settings.INSTALLED_APPS.".format(app, *max_dj_version)
)
else:
if app in installed_apps:
raise ImproperlyConfigured(
"'{}' is no more required since django {}.{}, "
"remove it from settings.INSTALLED_APPS.".format(app, *max_dj_version)
)
def check_installed_apps():
check_installed_app("colorfield")