Save json data (multiple items) into a map - dart

Question

i Have a json file that is fetched from my server, i'd like to save the data into a map using a model, what's the proper way to do it?
I've created a model to decode the json data. My json file has some "[ ]" if i use another json file (single item) without "[ ]" it works but not with the bracket.
Here is my model
class RestoModel {
// int id;
String name;
RestoModel(this.name);
RestoModel.fromJson(Map<String, dynamic> data) {
name = data['name'];
}
}
My fetch function
List<RestoModel> restaurantList = [];
void fetchRestaurants() async {
var response = await get('https://link/get_list.php');
var data = RestoModel.fromJson(json.decode(response.body));
setState(() {
restaurantList.add(data);
print(response.body);
});
}
i get this error
Unhandled Exception: type 'List<dynamic>' is not a subtype of type 'Map<String, dynamic>'
Here is my json data
[{"id":"1","name":"Resto 1"},{"id":"3","name":"Resto 2\r\n"}]
but my code works with this json data
{
"name": "beatae et provident et ut vel",
}
I want the json file to be saved in the List but i get this error
Unhandled Exception: type 'List<dynamic>' is not a subtype of type 'Map<String, dynamic>'

Answer 1

{"id":"1","name":"Resto 1"} is a map, [{"id":"1","name":"Resto 1"},{"id":"3","name":"Resto 2\r\n"}] is a List of Map. So basically when you're decoding your json, you've ended up with list of model, id:1 and id:2. You're trying to give List of dynamics to your named constructor which takes a single Map as a parameter, not list of them.
Try this:
Iterable i = json.decode(response.body);
List<RestoModel> restaurantList = i.map((model) => RestoModel.fromJson(model)).toList();
In this code, I have an iterable, and for each restaurant data in that iterable I'm creating restomodel from json.