Usmonov akramjonning mobil ilovalarni ishlab chiqish kursidan tayyorlagan

//Save User
saveData(IncomeExpensesModel user) async {
return await _repository.insertData('mydb', user.toMap());
}


//Read All Users
readAllData() async {
return await _repository.readData('mydb');
}


//Edit User
updateData(IncomeExpensesModel user) async {
return await _repository.updateData('mydb', user.toMap());
}

deleteData(userId) async {

return await _repository.deleteDataById('mydb', userId);
}
}

Bu kod esa bizga kerak bo’luvchi so’rovlar uchun methodlar bu bizning ishimizni osonlashtiradi, ya’ni har safar bir hil kod yozish o’rniga faqatgina methodni chaqiramiz.

import 'package:my_simple_store/data/data_providers/database_connection.dart';

import 'package:sqflite/sqflite.dart';

class Repository

{
late DatabaseConnection _databaseConnection;
Repository(){
_databaseConnection = DatabaseConnection();
}
static Database? _database;
Future get database async {
if (_database != null) {
return _database;
} else {
_database = await _databaseConnection.setDatabase();
return _database;
}
}


//Insert User
insertData(table, data) async {
var connection = await database;
return await connection?.insert(table, data);
}
//Read All Record
readData(table) async {
var connection = await database;
return await connection?.query(table);
}


//Read a Single Record By ID
readDataById(table, itemId) async {
var connection = await database;
return await connection?.query(table, where: 'id=?', whereArgs: [itemId]);
}
//Update User
updateData(table, data) async {
var connection = await database;
return await connection
?.update(table, data, where: 'id=?', whereArgs: [data['id']]);
}


//Delete User
deleteDataById(table, itemId) async {
var connection = await database;
return await connection?.rawDelete("delete from $table where id=$itemId");
}

}
Bu kod SQLFlite kodi hisoblanib bizga kerak bo’luvchi SQl kodlari yoziladi. Va bu kodlar ham alohida bir funcsiyalar yordamida haqiqiy SQLlite muhitigaga ogiriladi.