Completed
Pull Request — 5.6 (#2830)
by Jeroen
14:14
created

TranslatorBundle/Command/MigrationsDiffCommand.php (1 issue)

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<?php
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namespace Kunstmaan\TranslatorBundle\Command;
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use Doctrine\Bundle\DoctrineBundle\Command\Proxy\DoctrineCommandHelper;
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use Doctrine\Bundle\MigrationsBundle\Command\DoctrineCommand;
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use Kunstmaan\TranslatorBundle\Service\Command\DiffCommand;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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/**
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 * Command for generate migration classes by checking the translation flag value
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 *
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 * @final since 5.1
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 *
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 * @deprecated This class is deprecated since KunstmaanTranslatorBundle 5.2 and will be removed in 6.0.
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 */
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class MigrationsDiffCommand extends DiffCommand
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{
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    protected function configure()
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    {
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        parent::configure();
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        $this
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            ->setName('kuma:translator:migrations:diff')
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            ->addOption('em', null, InputOption::VALUE_OPTIONAL, 'The entity manager to use for this command.')
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        ;
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    }
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    public function execute(InputInterface $input, OutputInterface $output)
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    {
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        DoctrineCommandHelper::setApplicationEntityManager($this->getApplication(), $input->getOption('em'));
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        $configuration = $this->getMigrationConfiguration($input, $output);
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        DoctrineCommand::configureMigrations($this->getApplication()->getKernel()->getContainer(), $configuration);
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It seems like you code against a specific sub-type and not the parent class Symfony\Component\Console\Application as the method getKernel() does only exist in the following sub-classes of Symfony\Component\Console\Application: Symfony\Bundle\FrameworkBundle\Console\Application. Maybe you want to instanceof check for one of these explicitly?

Let’s take a look at an example:

abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the parent class:

    abstract class User
    {
        /** @return string */
        abstract public function getPassword();
    
        /** @return string */
        abstract public function getDisplayName();
    }
    
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        $exitCode = parent::execute($input, $output);
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        return is_numeric($exitCode) ? (int) $exitCode : 0;
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    }
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}
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