feat: added order_by method

creyPY/fastapi/order_by.py

@@ -0,0 +1,14 @@
+from typing import Callable, Optional
+
+from sqlalchemy import asc, desc
+from sqlalchemy.sql.selectable import Select
+
+
+def order_by(order_by: Optional[str] = None) -> Callable[[Select], Select]:
+    def _order_by(query: Select) -> Select:
+        if order_by:
+            direction = desc if order_by.startswith("-") else asc
+            query = query.order_by(direction(order_by.lstrip("-")))
+        return query
+
+    return _order_by