Sylius/app/migrations/Version20151118223453.php

<?php

namespace Sylius\Migrations;

use Doctrine\DBAL\Migrations\AbstractMigration;
use Doctrine\DBAL\Schema\Schema;

/**
 * @author Paweł Jędrzejewski <pawel@sylius.org>
 */
class Version20151118223453 extends AbstractMigration
{
    /**
     * @param Schema $schema
     */
    public function up(Schema $schema)
    {
        $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'mysql', 'Migration can only be executed safely on \'mysql\'.');

        $this->addSql('ALTER TABLE sylius_payment_method_translation CHANGE description description LONGTEXT DEFAULT NULL');
    }

    /**
     * @param Schema $schema
     */
    public function down(Schema $schema)
    {
        $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'mysql', 'Migration can only be executed safely on \'mysql\'.');

        $this->addSql('ALTER TABLE sylius_payment_method_translation CHANGE description description VARCHAR(255) DEFAULT NULL COLLATE utf8_unicode_ci');
    }
}