How to dynamically create object names based on a list? - flutter

Question

I have a class FoodDetails which accepts a list of names
class FoodDetails extends StatefulWidget {
FoodDetails({this.namesList});
final List namesList;
#override
State<FoodDetails> createState() => FoodDetailsState();
}
I want to create objects of a class NameClass based on the names of namesList.
For example:
If namesList=["John", "Doe"];
I want to create lists like
List<NameClass> John;
List<NameClass> Doe;
How can I achieve this? I tried the following but it doesn't work
class FoodDetailsState extends State<FoodDetails> {
void initState() {
super.initState();
for (int i = 0; i < widget.namesList.length; i++) {
List<NameClass> widget.namesList[i];
}
}
}

Answer 1

You cannot create objects dynamically like javascript in dart.
Easy workaround would be using HashMap in which the key will be the desired dynamically allocated name and the value will be the instance of the object.
Code snippet which would help you start with this:
import 'dart:collection';
class Class {
String? var1;
String? var2;
Class({var1, var2}) {
this.var1 = var1;
this.var2 = var2;
}
}
void main() {
var list = ["John", "Doe"];
HashMap<String, Class> map = new HashMap();
list.forEach((element) {
map.addAll({element: new Class()}); // Just adding the key to the Map
});
print(map.containsKey("John"));
print(map.containsKey("Doe"));
// Can easily manipulate the value known the key
map["John"]!.var1 = "variable1";
map["Doe"]!.var2 = "variable2";
map.forEach((key, value) {
print("Key: " +
key +
" has values var1: " +
(value.var1 ?? "") +
" and var2: " +
(value.var2 ?? ""));
});
}
The output would be:
true
true
Key: John has values var1: variable1 and var2:
Key: Doe has values var1: and var2: variable2