Directory Structure of a Bundle

Directories are marked bold. Mandatory files are marked red.

Bundle
- MyPluginBundle
  - MyPluginBundle.php
  - ChatCommand
    - Help.php
  - DataProviders
    - MyCustomDataProvider.php
    - Listener
      - ListenerInterfaceMyPluginEvent.php
  - DependencyInjection
    - MyPluginExtension.php
  - Plugins
    - MyPlugin.php
    - Gui
      - WidgetFactory.php
  - Resources
    - config
      - chat_commands.yml
      - plugin.yml
      - gui.yml
      - services.yml
    - translations
      - messages.en.yml
  - Services
    - MyService.php

Directories purposes

Mandatory Directories marked bold.

Directory	Purpose	Description
ChatCommand	Chat command classes	Free to name your classes
DataProviders	Data Provider classes	Class postfixed with `DataProvider.php`
DataProviders/Listener	Interfaces	Class prefixed with `ListenerInterface`
DependencyInjection	Dependencies and Config loading	PluginName postfixed with `Extension`
Plugins	Plugin Classes	Free to name your classes
Plugins/Gui	User Interface classes	Free to name your classes
Resources/config	Configs	snake cased names
Resources/translations	Localization messages	Always named: messages.lang_code.yml
Services	Additional services	Free to name your classes