Services.yaml

Services can be configured in this file. TYPO3 uses it for:

• Dependency Injection

• Event Listeners

• Command Controllers (see Feature: #89139 - Add dependency injection support for console commands)

• Registering a widget with the dashboard

A typical Configuration/Services.yaml may look like this:

typo3/sysext/core/Configuration/Services.yaml

services:
  # general settings
  _defaults:
    autowire: true
    autoconfigure: true
    public: false

  TYPO3\CMS\Core\:
    resource: '../Classes/*'

  # dependency injection (override public setting)
  TYPO3\CMS\Core\Mail\Mailer:
    public: true

  TYPO3\CMS\Core\Command\SendEmailCommand:
    tags:
      - name: 'console.command'
        command: 'mailer:spool:send'
      - name: 'console.command'
        command: 'swiftmailer:spool:send'
        alias: true
        schedulable: false

See also

• TYPO3 uses the Symfony Dependency Injection component, so official documentation can be found at https://symfony.com/doc/current/service_container.html