Database empty flutter - flutter

Question

I'm getting empty string when I trying to get the titles. Please help me.
Here's my source code
Here's my task.dart file
// task.dart
class Task {
int? id;
String? title;
String? note;
int? isCompleted;
String? date;
String? startTime;
String? endTime;
int? color;
int? remind;
String? repeat;
Task({
this.id,
this.title,
this.note,
this.isCompleted,
this.date,
this.startTime,
this.endTime,
this.color,
this.remind,
this.repeat,
});
Task.fromJson(Map<String, dynamic> json) {
id = json['id'];
title = json['title'];
note = json['note'];
isCompleted = json['isCompleted'];
date = json['date'];
startTime = json['startTime'];
endTime = json['endTime'];
color = json['color'];
remind = json['remind'];
repeat = json['repeat'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic> ();
data['id'] = this.id;
data['title'] = this.title;
data['note'] = this.note;
data['isCompleted'] = this.isCompleted;
data['date'] = this.date;
data['startTime'] = this.startTime;
data['endTime'] = this.endTime;
data['color'] = this.color;
data['remind'] = this.remind;
data['repeat'] = this.repeat;
return data;
}
}
Here's my task_controller.dart file
import 'package:calendar_app/db/db_helper.dart';
import 'package:calendar_app/models/task.dart';
import 'package:get/get.dart';
// task_controller.dart
class TaskController extends GetxController {
#override
void onReady() {
getTasks();
super.onReady();
}
var taskList = <Task>[].obs;
Future<int> addTask({Task? task}) async{
return await DBHelper.insert(task);
}
void getTasks() async {
List<Map<String, dynamic>> tasks = await DBHelper.query();
taskList.assignAll(tasks.map((data) => new Task.fromJson(data)).toList());
}
}
db_helper.dart
import 'package:calendar_app/models/task.dart';
import 'package:sqflite/sqflite.dart';
import 'package:path_provider/path_provider.dart';
import 'package:path/path.dart';
import 'dart:developer' as devtools show log;
// db_helper.dart
class DBHelper {
static Database? _db;
static final int _version = 1;
static final String _tableName = 'Tasks';
static Future<void> initDb() async {
if (_db != null) {
return;
}
try {
String _path = await getDatabasesPath() + 'tasks.db';
_db = await openDatabase(
_path,
version: _version,
onCreate: (db, version) {
devtools.log('Creating a new one');
return db.execute(
"CREATE TABLE $_tableName("
"id INTEGER PRIMARY KEY AUTOINCREMENT, "
"title STRING, note TEXT, date STRING, "
"startTime STRING, endTime STRING, "
"remind INTEGER, repeat STRING, "
"color INTEGER, "
"isCompleted INTEGER)",
);
},
);
} catch (e) {
devtools.log(e.toString());
}
}
static Future<int> insert(Task? task) async {
devtools.log('Insert func called');
return await _db?.insert(_tableName, task!.toJson()) ?? 1;
}
static Future<List<Map<String, dynamic>>> query() async {
devtools.log('Query func called');
return await _db!.query(_tableName);
}
}
When I trying to get a print statement of title it return empty. I have no idea what's happening here. Please help me.
print(_taskController.taskList[index].note.toString());
I'm following dbstech tutorial. If anyone have the source code please let me know.

Answer 1

First in getTask function try to reset taskList by calling this:
void getTasks() async {
taskList = []; // <--- add this
List<Map<String, dynamic>> tasks = await DBHelper.query();
taskList.assignAll(tasks.map((data) => new Task.fromJson(data)).toList());
}
Then I think you issue is your table is empty. After run your code try add something to your table then print it and see the result.