check data is in array flutter - flutter

Question

i create database to store 'post like' and want to check the 'user_id_liked' has like the post or not.
this is the array model from the database. i decided to select all items from database and store it to that array. for example i want to check if "id-2" is in that array or not. how can i do that programatically on flutter? i try like this before but it seems that i cant get result that i want.
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key});
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
List TotalLike = [];
Future getLike() async {
var response = await http
.post(Uri.parse(url), body: {
"id_post": "post-9d18d0a280",
});
if (response.statusCode == 200) {
setState(() {
try {
TotalLike = json.decode(response.body);
} catch (e) {
print(e);
}
});
setState(() {
TotalLike;
print(TotalLike);
});
return TotalLike;
}
}
#override
void initState() {
getLike();
super.initState();
}
#override
Widget build(BuildContext context) {
return Container(
child: Column(
children: [
Container(
width: 400,
height: 400,
color: TotalLike.contains("id-2") ? Colors.amber : Colors.pink,
)
],
),
);
}
}

Answer 1

var contain = someDataModel.comments.where((element) => element['Id'] == 'id-2');
if (contain.isEmpty){
_isILike = false;
} else {
_isILike = true;
}