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This is a high-level overview of MediaWiki development, including links to the key documents, resources and tools available to MediaWiki developers. It is written for skilled LAMP developers who have experience using MediaWiki.

• Se quiser "utilizar" as APIs da Web da Wikimedia, visite a central de APIs da Web (trabalho em progresso).
• Se quiser contribuir para o desenvolvimento do software da Wikimedia, consulte Programadores Novos.
• For an introductory guide to developing MediaWiki and MediaWiki extensions, read How to become a MediaWiki hacker.
• If you want to collaborate with other third-party MediaWiki users, the MediaWiki Stakeholders' Group (MWStake) is a MediaWiki user group consisting of MediaWiki developers, system administrators, users, consultants, and hosting providers.

Sinopse

O MediaWiki é o software da Wikipédia, dos projetos relacionados com ela e de milhares de wikis em todo o mundo.

MediaWiki is written in the PHP programming language. It uses jQuery as the client JavaScript library.

MediaWiki is primarily written for the LAMP platform and runs on most operating systems. MediaWiki primarily uses the MySQL and MariaDB database servers.

Development happens in an open source style, is largely coordinated online, and supported by the Wikimedia Foundation, though volunteer community developers play a huge part as well.

• A discussão sobre o desenvolvimento acontece em várias listas de discussão e nos canais de IRC. The main developer list is wikitech-l. The main developer IRC channels are #mediawiki and #wikimedia-dev.
• Source code is managed using the Git version control system.
• Code review for most projects is performed on Gerrit . Follow this tutorial to set up Git and Gerrit in order to submit patches.
• Bug reports and tasks for most projects are managed on Phabricator.
• Developers extending or interfacing with MediaWiki (instead of working on the core code) have several convenient extension points, including the API, the Hooks system and Skins – see the #Extending MediaWiki section of this page for an overview.

Documentos chave

=== Código, desenvolvimento e estilo ===

• Development policy – an overview of key development policies.
• Convenções de código – aprende a escrever código PHP ao estilo de MediaWiki.
• Security for developers – learn how to help keep MediaWiki secure.
• Pre-commit checklist – read this checklist before committing code.
• Code review guide – a guide for reviewers of commits to the MediaWiki source code.
• Requests for Comment (RfC) – read about or suggest new features for the MediaWiki ecosystem.

=== Depuração e testes ===

• Como depurar – um guia para a depuração do MediaWiki.
• Manual:Errors and symptoms – an overview of common MediaWiki errors and their correlating symptoms.
• Browser testing – learn to write UI tests for MediaWiki using Selenium.
• Unit testing – learn to write unit tests for MediaWiki using PHPUnit.
• Security for developers – learn how to write secure code.

===Arquitetura===

• Manual:Code – an overview of the key parts of MediaWiki's source code.
• Database layout – an overview of MediaWiki's database schemas.
• Global object variables – a partial list of key global variables.
• Localisation – learn about MediaWiki's internationalisation system.
• Manual namespace on this wiki – documentation for developers.
• MediaWiki Class Reference – technical documentation generated from the MediaWiki source code. (Note: The class reference is a large, slow-to-load page.)
• MediaWiki Virtual Library (MVL) – manuals, guides, collections of selected articles.

=== Subsistemas ===

• API – MediaWiki's API provides direct, high-level access to the data contained in the MediaWiki databases.
• ContentHandler – MediaWiki's framework for supporting custom types of page content.
• Database access – an overview of using databases in MediaWiki, including a brief guide to the database abstraction layer.
• Job queue – MediaWiki's framework for processing long-running tasks asynchronously.
• Messages API – MediaWiki's framework for providing localized application messages with PHP or JavaScript.

Ampliar o MediaWiki

MediaWiki has been designed to allow for modification without changing the "core code". This makes it easy to update to a new version of MediaWiki without having to manually merge in old extension code changes. There are six main extension points that allow developers to change or extend what MediaWiki can do. The extension points are:

• API – access the data and metadata of MediaWiki instances through its web API.
• Hooks – every time a given event happens, do something.
• Parser functions – create a new command like: {{#if:...|...|...}}.
• Temas – change the look and feel of MediaWiki.
• Special pages – add a new special page.
• Tag extensions – create a new tag like: <newtag>...</newtag>.
• Extending wiki markup – add a parser hook to modify the content of wikitext.

=== Ajuda para os programadores de extensões ===

• Manual:Developing extensions – a guide to developing extensions.
• Project:WikiProject Extensions
• Extensions FAQ
• See Category:Extensions, for a list of extensions.
• Manual:$wgExtensionFunctions – use to defer setup (or run other callbacks) for extensions until after the MediaWiki core is setup.
• Extension:BoilerPlate - a blank extension template.

=== Ajuda para os programadores de temas ===

• Manual:Skinning Part 1 – instruções sobre como criar um tema para o MediaWiki.
• Manual:Skin configuration – um guia para a configuração de temas para uma wiki.

=== Ajuda para reutilizar código de bibliotecas ===

• Manual:Developing libraries – a guide to packaging third-party libraries for use with MediaWiki.

=== Utilizações de wikis de terceiros ===

• Enterprise hub - Para wikis empresariais
• Centro Académico - Para wikis académicas