Merge pull request #16 from neutrons/flush_db_fix

Remove database flush command to make database persistent

docker-entrypoint.sh

@@ -13,15 +13,15 @@ cd /var/www/livedata/app
 python manage.py collectstatic --noinput
 
 # migrate django models
-python manage.py flush --no-input
 python manage.py makemigrations --noinput
 python manage.py migrate --noinput
 
 # create superuser
-echo "from django.contrib.auth.models import User; User.objects.create_superuser('${DJANGO_SUPERUSER_USERNAME}', '${DJANGO_SUPERUSER_USERNAME}@example.com', '${DJANGO_SUPERUSER_PASSWORD}')" | python manage.py shell
+#echo "from django.contrib.auth.models import User; User.objects.create_superuser('${DJANGO_SUPERUSER_USERNAME}', '${DJANGO_SUPERUSER_USERNAME}@example.com', '${DJANGO_SUPERUSER_PASSWORD}')" | python manage.py shell
 
 # Create the webcache
 python manage.py createcachetable webcache
+python manage.py ensure_adminuser --username=${DJANGO_SUPERUSER_USERNAME} --email='[email protected]' --password=${DJANGO_SUPERUSER_PASSWORD}
 
 # run application
 gunicorn live_data_server.wsgi:application -w 2 -b :8000 --reload

live_data_server/plots/management/commands/ensure_adminuser.py

@@ -0,0 +1,22 @@
+# taken from
+# https://stackoverflow.com/questions/39744593/how-to-create-a-django-superuser-if-it-doesnt-exist-non-interactively
+from django.contrib.auth import get_user_model
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    help = "Creates an admin user non-interactively if it doesn't exist"
+
+    def add_arguments(self, parser):
+        parser.add_argument("--username", help="Admin's username")
+        parser.add_argument("--email", help="Admin's email")
+        parser.add_argument("--password", help="Admin's password")
+
+    def handle(self, *args, **options):
+        User = get_user_model()
+        if not User.objects.filter(username=options["username"]).exists():
+            User.objects.create_superuser(
+                username=options["username"],
+                email=options["email"],
+                password=options["password"],
+            )