Minor bug fixes.

src/submissions/backend/db/__init__.py

@@ -1,5 +1,21 @@
 '''
 All database related operations.
 '''
-from .functions import *
-from .models import *
+from sqlalchemy import event
+from sqlalchemy.engine import Engine
+
+@event.listens_for(Engine, "connect")
+def set_sqlite_pragma(dbapi_connection, connection_record):
+    """
+    *should* allow automatic creation of foreign keys in the database
+    I have no idea how it actually works.
+
+    Args:
+        dbapi_connection (_type_): _description_
+        connection_record (_type_): _description_
+    """    
+    cursor = dbapi_connection.cursor()
+    cursor.execute("PRAGMA foreign_keys=ON")
+    cursor.close()
+
+from .models import *