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Joomla! Programmers Documentation

Manual Index

Index of Articles

Introduction

Joomla! Programmers Documentation

Development Strategy

Joomla! Development Strategy
Software Release Cycle
Backward Compatibility Policy
Security Policy

Get Started

Get Started
Technical Requirements

IDE

IDE

PhpStorm

PhpStorm
Debugging

Visual Studio Code
Eclipse

GIT

Git
Git Basics
GitHub Example 1: This Manual
GitHub Example 2: Joomla! CMS

Composer
NPM
Coding Style Guide

General Concepts

General Concepts
Joomla's Lifecycle

Namespaces

Namespaces
Finding Class files with PSR4
Joomla Namespace Prefixes
Defining your Namespace Prefix
Class Autoloading

Extension And Dispatcher

Extension and Dispatcher Classes
Extension Class for Components
Dispatcher Class for Components
Extension and Dispatcher Classes for Modules
Extension and Dispatcher Classes for Plugins

Categories

Categories Overview
Using the Categories API
Implementing Categories in your Component

Dependency Injection

Dependency Injection
Basic Concept
The Dependency Injection Container
JConfig Example
Extensions and Child Containers
Registering Subdependencies
Modules and Plugins
Dependency Injection Issues

ACL

ACL
How Joomla Access Works
Permissions

Dashboard

Database

Introduction
Select Data from the Database
Query Results
Insert Data into the Database
Updating a Record
Deleting a Record

Form Fields

Form Fields

Standard Fields

Standard Form Field Attributes
Custom Fields Overview
Example Custom Fields

Forms

Forms
How Forms Work
MVC and other considerations
Server-side Validation
Client-side Validation
Manipulating Forms

Guided Tours
Icons
Input

Javascript

JavaScript
Adding JavaScript to your Extension
Ajax and JsonResponse
Using com_ajax for Modules, Plugins and Templates

Js Library

Joomla JavaScript Library
Joomla core.js
Joomla Editors script
Joomla Dialog (popup) script
Content select (in modal) and cross window communication

Mail
Menus and Menuitems

Multilingual

Multilingual
Using Text Class
Language Files
Plural
Using Variables
Format Specifiers

Routing

Routing
Parsing an SEF URL
Building an SEF URL
RouterView
Accessing the Component Router class

User
Web Asset Manager
Web Services
Workflows

Building Extensions

Build Extensions

Install Update

Installation and Update

Installation

Installing Extensions
Manifest Files
Install Process and Script Files
Changelogs
Packages

Update Servers

Components

Components

MVC

Joomla Model View Controller pattern
MVC Overview
MVC Factory Overview
Post-Request-Get Pattern
Joomla Library MVC Classes

Component Examples

Component Examples
Example Form Component
Ajaxdemo Component

Custom Fields
Quicktask Link and Icon
Routing
Hide Table Columns
Tags

Libraries

Libraries
Creating a Joomla Library

Modules

Modules

Module Development Tutorial

Module Development Tutorial
Step 1 Basic Module
Step 2 Adding a tmpl file
Step 3 Adding a helper file
Step 4 Adding Language Support
Step 5 Adding Configuration
Step 6 Adding a Script File
Step 7 Adding Javascript
Step 8 Dependency Injection
Step 9 Adding Ajax
Step 10 Using AbstractModuleDispatcher
Step 11 Update Server

Basic Module

Plugins

Plugins
How Plugins Work
Joomla 4 and 5 Changes
Plugin Tutorial

Plugin Events

List of Plugin Events
Content Events
Installer Events

Plugin Examples

Plugin Examples
Ajax Plugin
Console Plugin - Hello World
Console Plugin Example - Execute a file of SQL statements
System Plugin Router Rules
Filesystem Plugin - Basic
Filesystem Plugin - FTP
Captcha Plugin
Editors Plugin
Editors Buttons (XTD) Plugin
User Plugin
WorkflowPlugin

Templates

Templates
Color scheme support
Custom Error Pages
Supporting Right to Left Languages
templateDetails.xml
Template

Custom Script

Custom PHP Script
Example PHP Script
To Logon or not to Logon
Install

Daemon

Creating a Daemon Process

Accessibility

Accessibility
W3C Standards

Best Practices

Best Practices for Accessible Design
Page Template
Tooltip

Element Library

Accessible UI Library
Element Template

Testing Accessibility
Reporting Errors
Further Reading

Security

Security
Fundamentals
Common Vulnerabilities
Input Handling
Secure DB Queries
CSRF Protection
Forms & Validations

Common Errors

Common Errors

Testing

Testing

Automated Tests

Automated Testing
Concepts

System Tests

System Testing
Setup your testing environment
Writing Tests

Unit Tests

Unit Testing
Setup your testing environment
Writing Tests

Manual Tests

Manual Testing
The Joomla! Patch Tester
Prebuild Packages

About

About
This documentation
Versioning the documentation

Web Services Api

Web Services API

Json Response Format

JSON Response Format

User Interface Text

User Interface Text Guidelines
A Z
Action or Description
Capitalisation
Use of the Joomla Name
Punctuation
Words to Watch
External References

Changelog

Changes to the CMS and the API

Template

Template development

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