Appeasing Pylance.

inventory/ui/blueprint.py

@@ -1,5 +1,6 @@
 from flask import Blueprint, request, render_template, jsonify, abort
 from sqlalchemy.exc import IntegrityError
+from typing import Any, Optional, List, cast, Type, Iterable
 
 from .defaults import (
     default_query, default_create, default_update, default_delete, default_serialize
@@ -12,7 +13,7 @@ bp = Blueprint("ui", __name__, url_prefix="/ui")
 def _normalize(s: str) -> str:
     return s.replace("_", "").replace("-", "").lower()
 
-def get_model_class(model_name: str):
+def get_model_class(model_name: str) -> type:
     """Resolve a model class by name across SA/Flask-SA versions."""
     target = _normalize(model_name)
 
@@ -36,7 +37,7 @@ def get_model_class(model_name: str):
 
     abort(404, f"Unknown resource '{model_name}'")
 
-def call(Model, name, *args, **kwargs):
+def call(Model: type, name: str, *args: Any, **kwargs: Any) -> Any:
     fn = getattr(Model, name, None)
     return fn(*args, **kwargs) if callable(fn) else None
 
@@ -45,19 +46,28 @@ def list_items(model_name):
     Model = get_model_class(model_name)
     text = (request.args.get("q") or "").strip() or None
     limit_param = request.args.get("limit")
-    limit = None if limit_param in (None, "", "0", "-1") else min(int(limit_param), 500)
-    # limit = min(int(request.args.get("limit", 100)), 500)
+    limit: int | None = None if limit_param in (None, "", "0", "-1") else min(int(limit_param), 500)
     offset = int(request.args.get("offset", 0))
     view = (request.args.get("view") or "json").strip()
 
-    rows = call(Model, "ui_query", db.session, text=text, limit=limit, offset=offset) \
-        or default_query(db.session, Model, text=text, limit=limit, offset=offset)
-    items = [call(Model, 'ui_serialize', r, view=view) or default_serialize(Model, r, view=view)
-             for r in rows]
+    # Build kwargs so we only include 'limit' when it's an int
+    qkwargs: dict[str, Any] = {"text": text, "offset": offset}
+    if limit is not None:
+        qkwargs["limit"] = limit
+
+    rows_iter: Iterable[Any] = (
+        call(Model, "ui_query", db.session, **qkwargs)
+        or default_query(db.session, Model, **qkwargs)
+    )
+    rows = list(rows_iter)
+
+    items = [
+        (call(Model, "ui_serialize", r, view=view) or default_serialize(Model, r, view=view))
+        for r in rows
+    ]
 
     want_option = (request.args.get("view") == "option")
     want_list = (request.args.get("view") == "list")
-    print(view)
     if want_option:
         return render_template("fragments/_option_fragment.html", options=items)
     if want_list:
@@ -67,7 +77,7 @@ def list_items(model_name):
 @bp.post("/<model_name>/create")
 def create_item(model_name):
     Model = get_model_class(model_name)
-    payload = request.get_json(silent=True) or {}
+    payload: dict[str, Any] = request.get_json(silent=True) or {}
     if not payload:
         return jsonify({"error": "Payload required"}), 422
     try:
@@ -85,25 +95,32 @@ def create_item(model_name):
 @bp.post("/<model_name>/update")
 def update_item(model_name):
     Model = get_model_class(model_name)
-    payload = request.get_json(silent=True) or {}
-    try:
-        id_ = int(payload.get("id"))
-    except Exception:
+    payload: dict[str, Any] = request.get_json(silent=True) or {}
+
+    id_raw: Any = payload.get("id")
+    if isinstance(id_raw, bool):  # bool is an int subclass; explicitly ban
         return jsonify({"error": "Invalid id"}), 422
+    try:
+        id_ = int(id_raw)  # will raise on None, '', junk
+    except (TypeError, ValueError):
+        return jsonify({"error": "Invalid id"}), 422
+
     obj = call(Model, 'ui_update', db.session, id_=id_, payload=payload) \
         or default_update(db.session, Model, id_, payload)
     if not obj:
-        return jsonify({"error": "Note found"}), 404
+        return jsonify({"error": "Not found"}), 404
     return ("", 204)
 
 @bp.post("/<model_name>/delete")
 def delete_item(model_name):
     Model = get_model_class(model_name)
-    payload = request.get_json(silent=True) or {}
-    ids = payload.get("ids") or []
+    payload: dict[str, Any] = request.get_json(silent=True) or {}
+    ids_raw = payload.get("ids") or []
+    if not isinstance(ids_raw, list):
+        return jsonify({"error": "Invalid ids"}), 422
     try:
-        ids = [int(x) for x in ids]
-    except Exception:
+        ids: List[int] = [int(x) for x in ids_raw]
+    except (TypeError, ValueError):
         return jsonify({"error": "Invalid ids"}), 422
     try:
         deleted = call(Model, 'ui_delete', db.session, ids=ids) \