feature #1289 Leverage PHP 8 attributes to configure Command (Antoine Makdessi)

This PR was merged into the main branch.

Discussion
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Leverage PHP 8 attributes to configure Command

I wanted to test PHP 8 install on my new machine, thus tried some features on this project as it now requires v8
I followed https://symfony.com/blog/new-in-symfony-5-3-lazy-command-description
Feel free to close, but I think it could be useful to showcase new way on this Symfony demo project as it is kind off an entry point, also Controllers uses this feature

Commits
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a32df74 Leverage PHP 8 attributes to configure Command

Author: javiereguiluz

src/Command/AddUserCommand.php

@@ -15,6 +15,7 @@
 use App\Repository\UserRepository;
 use App\Utils\Validator;
 use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Exception\RuntimeException;
 use Symfony\Component\Console\Input\InputArgument;
@@ -46,12 +47,12 @@
  * @author Javier Eguiluz <[email protected]>
  * @author Yonel Ceruto <[email protected]>
  */
+#[AsCommand(
+    name: 'app:add-user',
+    description: 'Creates users and stores them in the database'
+)]
 class AddUserCommand extends Command
 {
-    // to make your command lazily loaded, configure the $defaultName static property,
-    // so it will be instantiated only when the command is actually called.
-    protected static $defaultName = 'app:add-user';
-
     private SymfonyStyle $io;
 
     public function __construct(
@@ -69,7 +70,6 @@ public function __construct(
     protected function configure(): void
     {
         $this
-            ->setDescription('Creates users and stores them in the database')
             ->setHelp($this->getCommandHelp())
             // commands can optionally define arguments and/or options (mandatory and optional)
             // see https://symfony.com/doc/current/components/console/console_arguments.html

src/Command/DeleteUserCommand.php

@@ -15,6 +15,7 @@
 use App\Repository\UserRepository;
 use App\Utils\Validator;
 use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Exception\RuntimeException;
 use Symfony\Component\Console\Input\InputArgument;
@@ -37,10 +38,12 @@
  *
  * @author Oleg Voronkovich <[email protected]>
  */
+#[AsCommand(
+    name: 'app:delete-user',
+    description: 'Deletes users from the database'
+)]
 class DeleteUserCommand extends Command
 {
-    protected static $defaultName = 'app:delete-user';
-
     private SymfonyStyle $io;
 
     public function __construct(
@@ -57,7 +60,6 @@ public function __construct(
     protected function configure(): void
     {
         $this
-            ->setDescription('Deletes users from the database')
             ->addArgument('username', InputArgument::REQUIRED, 'The username of an existing user')
             ->setHelp(<<<'HELP'
 The <info>%command.name%</info> command deletes users from the database:

src/Command/ListUsersCommand.php

@@ -13,6 +13,7 @@
 
 use App\Entity\User;
 use App\Repository\UserRepository;
+use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
@@ -37,11 +38,13 @@
  *
  * @author Javier Eguiluz <[email protected]>
  */
+#[AsCommand(
+    name: 'app:list-users',
+    description: 'Lists all the existing users',
+    aliases: ['app:users']
+)]
 class ListUsersCommand extends Command
 {
-    // a good practice is to use the 'app:' prefix to group all your custom application commands
-    protected static $defaultName = 'app:list-users';
-
     public function __construct(
         private MailerInterface $mailer,
         private string $emailSender,
@@ -56,7 +59,6 @@ public function __construct(
     protected function configure(): void
     {
         $this
-            ->setDescription('Lists all the existing users')
             ->setHelp(<<<'HELP'
 The <info>%command.name%</info> command lists all the users registered in the application: