See available Symfony rules

This package is already part of rector/rector package, so it works out of the box.

All you need to do is install the main package, and you're good to go:

composer require rector/rector --dev

To add a set to your config, use ->withPreparedSets method, and pick one :

use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withPreparedSets(symfonyCodeQuality: true)
    ->withComposerBased(symfony: true);

If you're on PHP 7.x, you can use withSets() instead, for symfonyCodeQuality set, so you can define:

use Rector\Config\RectorConfig;
use Rector\Symfony\Set\SymfonySetList;

return RectorConfig::configure()
    ->withSets([
        SymfonySetList::SYMFONY_CODE_QUALITY,
    ]);

See documentation for more.

Some rules like StringFormTypeToClassRector need access to your Symfony container dumped XML. It contains list of form types with their string names, so it can convert them to class references.

How to add it? Check your var/cache/ directory and find the XML file for your test env. Then add it in rector.php:

use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withSymfonyContainerXml(__DIR__ . '/var/cache/dev/App_KernelDevDebugContainer.xml');

That's it! Now you can run the StringFormTypeToClassRector and get your form classes converted safely.

Rector is a tool that we develop and share for free, so anyone can save hundreds of hours on refactoring. But not everyone has time to understand Rector and AST complexity. You have 2 ways to speed this process up:

• read a book - The Power of Automated Refactoring
• hire our experienced team to improve your code base

Both ways support us to and improve Rector in sustainable way by learning from practical projects.