commit unversioned files ;)

containers/services.py

@@ -0,0 +1,14 @@
+from containers.models import Container
+
+def get_container_for_booking(booking):
+    filters = {
+        'expedited': False,
+    }
+
+    if booking.container_number:
+        filters['container_number'] = booking.container_number
+    else:
+        filters['container_type'] = booking.container_type
+        filters['line'] = booking.line
+
+    return Container.objects.filter(**filters).order_by('created_at').first()