Flutter - Can't save all json data to Iterable List from api response EDIT: ( Can't Fetch Data from iterable List)

Its actually saving the data. But its not printing on the console when using debugPrint.

You have to give wrapWidth in debugPrint, so that you can see full response stored in a variable.

debugPrint(  "=========== Dish_List ==============\n" + list.toString(),  wrapWidth: 1000,);debugPrint("====================================");

I think this is the problem you are facing.

You can also do pretty-print to make it understandable

debugPrint(  "=========== Dish_List ==============",);JsonEncoder encoder = new JsonEncoder.withIndent('  ');debugPrint('${encoder.convert(list)}', wrapWidth: 1000);debugPrint("====================================");

Listing all the dishes

Container(            color: Colors.white,            padding: EdgeInsets.fromLTRB(5, 10, 5, 10),            child: ListView.builder(            itemCount:  apiResponse[0]['table_menu_list'][0]['category_dishes'].length,              itemBuilder:(cc,ind){                return ListTile(                title:Text(apiResponse[0]['table_menu_list'][0]['category_dishes'][ind]['dish_name'])                  //use other properties as your requirement                );              }            ))

Getting date from network. I used local assignment of data ! Replace with your own method

void assignData(){    apiResponse = [  {    "restaurant_name": "Cafe",    "restaurant_image": "http://restaurants.unicomerp.net/images/Restaurant/1010000001.jpg",    "table_id": "1",    "table_name": "Table 01",    "branch_name": "Cafe",    "nexturl": "http://snapittapp.snapitt.net/api/menu/10/?org=1010000001&branch_id=1000000001&limit=10&offset=20&lang=en",    "table_menu_list": [      {        "menu_category": "Salads and Soup",        "menu_category_id": "11",        "menu_category_image": "http://restaurants.unicomerp.net/images/Restaurant/Item/ItemGroup_11.jpg",        "nexturl": "http://snapittapp.snapitt.net/api/menu/20/?org=1010000001&branch_id=1000000001&menuCat=11&limit=10&offset=20&lang=en",        "category_dishes": [          {            "dish_id": "100000001",            "dish_name": "Spinach Salad",            "dish_price": 7.95,            "dish_image": "http://restaurants.unicomerp.net//images/Restaurant/1010000001/Item/Items/100000001.jpg",            "dish_currency": "SAR",            "dish_calories": 15,            "dish_description": "Fresh spinach, mushrooms, and hard-boiled egg served with warm bacon vinaigrette",            "dish_Availability": true,            "dish_Type": 2,            "nexturl": "http://snapittapp.snapitt.net/api/menu/30/?org=1010000001&branch_id=1000000001&menuItem=100000001&limit=10&offset=20&lang=en",            "addonCat": [              {                "addon_category": "Spicy/Non-Spicy",                "addon_category_id": "104",                "addon_selection": 0,                "nexturl": "http://snapittapp.snapitt.net/api/menu/40/?org=1010000001&branch_id=1000000001&menuItem=100000001&menuAddonCat=104&menuAddonselc=0&limit=10&offset=20&lang=en",                "addons": [                  {                    "dish_id": "100000032",                    "dish_name": "Non Spicy",                    "dish_price": 25,                    "dish_image": "http://restaurants.unicomerp.net/images/Restaurant/Item/Item_100000025.jpg",                    "dish_currency": "SAR",                    "dish_calories": 15,                    "dish_description": "Non Spicy",                    "dish_Availability": true,                    "dish_Type": 1                  }                ]              },              {                "addon_category": "Add On",                "addon_category_id": "101",                "addon_selection": 1,                "nexturl": "http://snapittapp.snapitt.net/api/menu/40/?org=1010000001&branch_id=1000000001&menuItem=100000001&menuAddonCat=101&menuAddonselc=1&limit=10&offset=20&lang=en",                "addons": [                  {                    "dish_id": "100000020",                    "dish_name": "fried onions",                    "dish_price": 15,                    "dish_image": "http://restaurants.unicomerp.net/images/Restaurant/Item/Item_100000020.jpg",                    "dish_currency": "SAR",                    "dish_calories": 10,                    "dish_description": "fried onions",                    "dish_Availability": true,                    "dish_Type": 2                  }                ]              }            ]          },          {            "dish_id": "100000003",            "dish_name": "Traditional New England Seafood Chowder",            "dish_price": 12,            "dish_image": "http://restaurants.unicomerp.net/images/Restaurant/1010000001/Item/Items/100000003.jpg",            "dish_currency": "SAR",            "dish_calories": 30,            "dish_description": "with clams, scallops, and shrimp,",            "dish_Availability": true,            "dish_Type": 1,            "nexturl": "http://snapittapp.snapitt.net/api/menu/30/?org=1010000001&branch_id=1000000001&menuItem=100000003&limit=10&offset=20&lang=en",            "addonCat": []          },          {            "dish_id": "100000004",            "dish_name": "Salad Bar Soup",            "dish_price": 5,            "dish_image": "http://restaurants.unicomerp.net/images/Restaurant/1010000001/Item/Items/100000004.jpg",            "dish_currency": "SAR",            "dish_calories": 30,            "dish_description": "Flour Mixed with fresh green leafy vegetables",            "dish_Availability": true,            "dish_Type": 2,            "nexturl": "http://snapittapp.snapitt.net/api/menu/30/?org=1010000001&branch_id=1000000001&menuItem=100000004&limit=10&offset=20&lang=en",            "addonCat": []          },          {            "dish_id": "100000005",            "dish_name": "chicken-soup",            "dish_price": 14.89,            "dish_image": "http://restaurants.unicomerp.net/images/Restaurant/1010000001/Item/Items/100000005.jpg",            "dish_id": "100000029",            "dish_name": "Tacos",            "dish_price": 25,            "dish_image": "http://restaurants.unicomerp.net/images/Restaurant/Item/Item_100000029.jpg",            "dish_currency": "SAR",            "dish_calories": 225,            "dish_description": "Mexican Street Tacos",            "dish_Availability": true,            "dish_Type": 3,            "nexturl": "http://snapittapp.snapitt.net/api/menu/30/?org=1010000001&branch_id=1000000001&menuItem=100000029&limit=10&offset=20&lang=en",            "addonCat": []          }        ]      }    ]  }];  }}

Screenshot

The problem is here that you only do it for the first item in result and in table_menu_list

  static Resource<List<CategoryDishes>> get all {    return Resource(        url: Constants.FOOD_API_URL,        parse: (response) {          final result = json.decode(response.body.toString());          //  print(response);          Iterable list = result[0]['table_menu_list'][0]['category_dishes'];          debugPrint("=========== Dish_List ==============\n" + list.toString());          debugPrint("====================================");          return list.map((model) => CategoryDishes.fromJson(model)).toList();        });  }

The parse function I would do it like this

final result = json.decode(response.body.toString());          //  print(response);List<CategoryDishes> list = []List.from(result).forEach((item) =>List.from(item['table_menu_list']).forEach((menuItem) =>   List.from(menuItem['category_dishes']).forEach((dish) =>    list.add(CategoryDishes.fromJson(dish)))));debugPrint("=========== Dish_List ==============\n" + list.toString());debugPrint("====================================");return list;

If you don't want to have repeated dishes in the list (dishes with the same id), you could use a map

final result = json.decode(response.body.toString());          //  print(response);Map<String, CategoryDishes> map = {}List.from(result).forEach((item) =>List.from(item['table_menu_list']).forEach((menuItem) =>   List.from(menuItem['category_dishes']).forEach((dish) =>    map[dish['dish_id']] = CategoryDishes.fromJson(dish);)));return map.values.toList();