Dynamically create an additional list of databases for settings.py

apps.py

from django import apps
from django import conf

from apps.database.models import Database


class DatabaseAppConfig(apps.AppConfig):
    """
    You can only supplement the list of standard database settings
    when loading the application, since during the first pass through
    the settings.py file the application models are not loaded yet
    """
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        # Dynamically create an additional list of databases
        databases = {
            db.distribution_center: {
                'NAME': db.name,
                'ENGINE': db.engine,
                'USER': db.user or '',
                'PASSWORD': db.password or '',
                'HOST': db.host or '',
                'PORT': db.port or '',
            }
            for db in Database.objects.all()
        }

        # Update settings to add additional databases
        conf.settings.DATABASES.update(databases)