QBCore Framework Development

This skill provides guidelines and patterns for developing resources using the QBCore Framework.

1. Core Object Retrieval

To interact with QBCore, you must retrieve the Core Object. Always cache this in a local variable at the top of your scripts.

Client & Server:

local QBCore = exports['qb-core']:GetCoreObject()

2. Key Concepts

Player Data (Server-side)

• Identify players by Source temporarily, but use CitizenID for database persistence.
• QBCore.Functions.GetPlayer(source): Returns the Player object with all data.
• Player.PlayerData: Contains job, gang, money, items, metadata, etc.

Callbacks (Server -> Client Data)

• Use QBCore.Functions.CreateCallback (Server) to send data to client.
• Use QBCore.Functions.TriggerCallback (Client) to request data from server.
• Rule: Never trust client data blindly in callbacks. Always validate on server.

Items

• Use QBCore.Functions.CreateUseableItem (Server) to register items.
• Items are defined in qb-core/shared/items.lua (or qb-inventory).

Database

• QBCore uses oxmysql by default.
• Use MySQL.query, MySQL.insert, MySQL.update, MySQL.scalar.

3. Standard Resource Structure

my-resource/
├── fxmanifest.lua
├── config.lua
├── client/
│   └── main.lua
└── server/
    └── main.lua

4. Best Practices

1. Cache Core Object: Do not call exports['qb-core']:GetCoreObject() inside loops.
2. Use Callbacks for Data: Avoid TriggerClientEvent for data retrieval if a callback is cleaner.
3. Validate Inputs: Client can send any data. Verify job, money, and ownership on server.
4. Optimized Loops: Use dynamic sleep (Wait) based on distance.
5. Localization: Use qb-core/shared/locale.lua or standard Lang object if available.

5. Documentation

• Official Docs: https://docs.qbcore.org/
• Github: https://github.com/qbcore-framework/qb-core