start project

app/utils/pagination.py

@@ -0,0 +1,14 @@
+"""Shared page/per_page parsing (Chapter 11: consistent across every
+Grid.js-backed endpoint)."""
+from __future__ import annotations
+
+from flask import Request
+
+DEFAULT_PER_PAGE = 20
+MAX_PER_PAGE = 100
+
+
+def parse_pagination(request: Request) -> tuple[int, int]:
+    page = max(1, request.args.get("page", 1, type=int))
+    per_page = request.args.get("per_page", DEFAULT_PER_PAGE, type=int)
+    return page, max(1, min(per_page, MAX_PER_PAGE))