Update app.py

💣 地雷一：Pandas 遇到舊資料空值 (None) 會當機崩潰
💣 地雷二：「0 元 bug」的翻版！如果老闆手動把限量改成 0 怎麼辦？
💣 地雷三：載入編輯時，舊資料的 None 會讓畫面壞掉

app.py

@@ -315,7 +315,11 @@ def get_menu_items():
         df['is_active'] = df['is_active'].apply(lambda x: "🟢 販售中" if x else "🔴 已下架")
         df['has_image'] = df.get('image_url', pd.Series()).apply(lambda x: "🔗 有" if pd.notnull(x) and str(x).strip() else "無")
         # 顯示限量 (999 顯示為無限制)
-        df['daily_limit_display'] = df.get('daily_limit', pd.Series(999)).apply(lambda x: "無限制" if x >= 999 else f"剩 {x} 份")
+        # df['daily_limit_display'] = df.get('daily_limit', pd.Series(999)).apply(lambda x: "無限制" if x >= 999 else f"剩 {x} 份")
+        # 🌟 修正後的寫法 (加入 pd.isna 判斷與強制轉型)：
+        df['daily_limit_display'] = df.get('daily_limit', pd.Series([999]*len(df))).apply(
+            lambda x: "無限制" if pd.isna(x) or float(x) >= 999 else f"剩 {int(float(x))} 份"
+        )        
 
         display_df = df[['name', 'price', 'daily_limit_display', 'category', 'available_times', 'allow_takeout', 'require_prepay', 'is_active', 'has_image']]
         display_df.columns = ['餐點名稱', '價格', '限量', '分類', '供應時段', '可外帶', '預付規則', '狀態', '照片連結']
@@ -345,19 +349,35 @@ def load_menu_data(selected_string):
         item = res.data[0]
         times = item.get("available_times", [])
         if not times: times = ["晚餐 (18:30-21:30)", "宵夜 (21:30後)"] # 預設值防呆
-        
+
         return (
             item.get("name", ""),
             item.get("description", ""),
             item.get("price", 0),
-            item.get("daily_limit", 999), # 🌟 讀取限量，預設 999
+            # 原本：item.get("daily_limit", 999), 
+            # 🌟 修正後：即使 get 抓到 None 也要強制轉回 999
+            item.get("daily_limit") if item.get("daily_limit") is not None else 999,
             item.get("category", "main"),
             times,
             item.get("require_prepay", False),
             item.get("allow_takeout", True),
             item.get("image_url", "") or "",
-            item_id # 將 ID 存入隱藏狀態中
+            item_id
         )
+        
+        # return (
+        #     item.get("name", ""),
+        #     item.get("description", ""),
+        #     item.get("price", 0),
+        #     item.get("daily_limit", 999), # 🌟 讀取限量，預設 999
+        #     item.get("category", "main"),
+        #     times,
+        #     item.get("require_prepay", False),
+        #     item.get("allow_takeout", True),
+        #     item.get("image_url", "") or "",
+        #     item_id # 將 ID 存入隱藏狀態中
+        # )
+        
     except:
         return "", "", 0, 999, "main", ["晚餐 (18:30-21:30)", "宵夜 (21:30後)"], False, True, "", ""
 
@@ -369,7 +389,8 @@ def add_menu_item(name, desc, price, limit, category, available_times, require_p
     try:
         data = {
             "name": name, "description": desc, "price": int(price), 
-            "daily_limit": int(limit) if limit else 999, # 🌟 儲存限量
+            # "daily_limit": int(limit) if limit else 999, # 🌟 儲存限量
+            "daily_limit": int(limit) if limit is not None else 999,
             "category": category, "available_times": available_times, "allow_takeout": allow_takeout, 
             "require_prepay": require_prepay, "is_active": True, "image_url": final_image_url
         }
@@ -386,7 +407,8 @@ def update_menu_item(item_id, name, desc, price, limit, category, available_time
     try:
         data = {
             "name": name, "description": desc, "price": int(price), 
-            "daily_limit": int(limit) if limit else 999, # 🌟 儲存限量修改
+            # "daily_limit": int(limit) if limit else 999, # 🌟 儲存限量修改
+            "daily_limit": int(limit) if limit is not None else 999,
             "category": category, "available_times": available_times, "allow_takeout": allow_takeout, 
             "require_prepay": require_prepay, "image_url": final_image_url
         }