home added

lib/models/shop.dart

@@ -59,7 +59,7 @@ class ShopItem {
   const ShopItem({
     required this.id,
     required this.shopId,
-    required this.productId,
+    this.productId,
     required this.name,
     required this.price,
     this.quantity,
@@ -68,7 +68,7 @@ class ShopItem {
 
   final int id;
   final int shopId;
-  final int productId;
+  final int? productId;
   final String name;
   final double price;
   final int? quantity;
@@ -78,7 +78,7 @@ class ShopItem {
     return ShopItem(
       id: map['id']! as int,
       shopId: map['shop_id']! as int,
-      productId: map['product_id']! as int,
+      productId: map['product_id'] as int?,
       name: map['name']! as String,
       price: (map['price'] as num).toDouble(),
       quantity: map['quantity'] as int?,