UPGRADE-4.0.md

Backwards compatibility breaking changes

• Platform Requirements

  • Minimal PHP version was increased from x to x.
  • Minimal MySQL version was increased from x to x

• Symfony 4

  • Symfony deprecations were removed or refactored https://github.com/symfony/symfony/blob/4.4/UPGRADE-4.0.md
  • Services are now private by default in Symfony 4. Mautic has a "hack" to register its own services as public but dependency injection should be preferred for Commands, Controllers, and services. Some Symfony services may no longer be available to the Controller via the Container.

• Packages removed

  • debril/rss-atom-bundle removed
  • egeloen/ordered-form-bundle removed
  • sensio/distribution-bundle removed
  • codeception/codeception removed

• Commands

  • \Mautic\CoreBundle\Command\ModeratedCommand::$lockHandler is now private

• Services

  • mautic.http.client has been upgraded from GuzzleHttp 6 to 7. You can now leverage Psr\Http\Client\ClientInterface (PSR-18) in your class constructors! Example:

  config.php:

  'mautic.demo.class' => [
      'class'     => DemoClass::class,
      'arguments' => [
          'mautic.http.client',
      ],
  ],

  DemoClass.php

  use Psr\Http\Client\ClientInterface;
  
  ....
  public function __construct(
      ClientInterface $client
  ) {
      $this->client = $client;
  }