Breaking Changes Reference - QBCore Guide for FiveM
Introduction
This tutorial turns Breaking Changes Reference into a clean, developer-friendly guide for QBCore/FiveM. You will follow a step-by-step flow, copy the relevant code patterns, and learn the “why” behind the setup.
Requirements
- QBCore installed and running on a dev server
- Basic Lua knowledge and comfort reading FiveM patterns
- A test workflow for iterating safely (dev server, not production)
- Optional: a code editor with Lua/FiveM helpers (VS Code recommended)
Step-by-Step Guide
Step 1: QBCore v2.0 Breaking Changes
In this step, you will apply the qbcore v2.0 breaking changes concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 2: Player Data Structure Changes
In this step, you will apply the player data structure changes concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 3: Event System Changes
In this step, you will apply the event system changes concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 4: Database Schema Changes
In this step, you will apply the database schema changes concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 5: Function Signature Changes
In this step, you will apply the function signature changes concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 6: Configuration Changes
In this step, you will apply the configuration changes concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 7: Removed Features
In this step, you will apply the removed features concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Step 8: Migration Checklist
In this step, you will apply the migration checklist concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.
Code Example
local Player = QBCore.Functions.GetPlayer(source)
local cash = Player.PlayerData.money['cash']
local bank = Player.PlayerData.money['bank']
local crypto = Player.PlayerData.money['crypto']
-- Direct money manipulation (deprecated)
Player.PlayerData.money['cash'] = 1000Tips & Best Practices
- Keep authority on the server: validate inputs before money/database operations.
- Start with one resource/module at a time, then refactor after you verify it works.
- Use callbacks for request/response flows and events for push/UX updates.
- When you run loops, avoid freezes: always yield with Wait() (client/server) and cache hot values.