如何将数据从Firestore映射到列表并转换为对象数据类型

我正在尝试将数据从FirestoreQueryDocumentSnapshot类型映射到Object自定义的，Class但没有成功

这是我的课

class Food {
 String name;
 int price;
 String image;

  Food({this.name, this.price, this.image, });
}

下面的示例我在本地制作了数据并进行了正常工作

     List<Food> foodType1Local = [
        Food(
          name: 'Food 1',
          price: 10,
          image: 'assets/food1.png',
        ),
        Food(
          name: 'Food 2',
          price: 20,
          image: 'assets/food2.png',
        ),
        Food(
          name: 'Food 3',
          price: 30,
          image: 'assets/food3.png',
        ),
      ];
     List<Food> foodType2Local...
     List<Food> foodType3Local...

下面的示例我在Cloud Firestore中制作了数据并获取它是一个问题

下面的示例我正在从Cloud Firestore获取数据，但出现错误 type 'QueryDocumentSnapshot' is not a subtype of type 'Food'

  List foodType1Cloud = <Food>[];
  List foodType2Cloud = <Food>[];
  List foodType3Cloud = <Food>[];

  getFoodType1Cloud() async {
    QuerySnapshot snapshot = await FirebaseFirestore.instance.collection("foodType1").get();
      foodType1Cloud.addAll(snapshot.docs);
      foodType1Cloud.map((foodType1Data) {
        Food(
          name: foodType1Data['name'], //cant do --> name: foodType1Data[index]['name'],
          price: foodType1Data['price'], //cant do --> price: foodType1Data[index]['price'],
          image: foodType1Data['image'], //cant do --> image: foodType1Data[index]['image'],
        );
      }).toList();
  }
  getFoodType2Cloud()...
  getFoodType3Cloud()...

如果我尝试从本地数据中获取代码，则这是代码的主体，它可以正常工作，但是当我从云存储中获取信息时却无法正常工作

   //tabs of length "3"
   body: TabBarView(
     children: [
       Container(
         margin: EdgeInsets.symmetric(horizontal: 16, vertical: 16),
         child: Column(
           children: <Widget>[
             buildFoodList(foodType1Local),
           ],
         ),
       ),
       Container(
         margin: EdgeInsets.symmetric(horizontal: 16, vertical: 16),
         child: Column(
           children: <Widget>[
             buildFoodList(foodType1Loca2),
           ],
         ),
       ),
       Container...
       
     ],
   ),

这再次是代码的主体，但是如果我尝试从Cloud Firestore提取，则会显示错误type 'QueryDocumentSnapshot' is not a subtype of type 'Food'

        body: TabBarView(
          children: [
            Container(
              margin: EdgeInsets.symmetric(horizontal: 16, vertical: 16),
              child: Column(
                children: <Widget>[
                  buildFoodList(foodType1Cloud),
                ],
              ),
            ),
            Container(
              margin: EdgeInsets.symmetric(horizontal: 16, vertical: 16),
              child: Column(
                children: <Widget>[
                  buildFoodList(foodType2Cloud),
                ],
              ),
            ),
            Container...

          ],
        ),

我认为buildFoodList代码也是必要的，所以我以防万一

Widget buildFoodList(List foods) {
    return Expanded(
      child: GridView.builder(
        itemCount: foods.length,
        physics: BouncingScrollPhysics(),
        gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: 2,
          childAspectRatio: 0.8,
          mainAxisSpacing: 20,
          crossAxisSpacing: 20,
        ),
        itemBuilder: (context, index) {
          return FoodCard(foods[index]);
        },
      ),
    );
  }