[Console] Document invokable command

components/console/changing_default_command.rst

@@ -9,20 +9,14 @@ name to the ``setDefaultCommand()`` method::
 
     use Symfony\Component\Console\Attribute\AsCommand;
     use Symfony\Component\Console\Command\Command;
-    use Symfony\Component\Console\Input\InputInterface;
-    use Symfony\Component\Console\Output\OutputInterface;
+    use Symfony\Component\Console\Style\SymfonyStyle;
 
-    #[AsCommand(name: 'hello:world')]
+    #[AsCommand(name: 'hello:world', description: 'Outputs "Hello World"')]
     class HelloWorldCommand extends Command
     {
-        protected function configure(): void
+        public function __invoke(SymfonyStyle $io): int
         {
-            $this->setDescription('Outputs "Hello World"');
-        }
-
-        protected function execute(InputInterface $input, OutputInterface $output): int
-        {
-            $output->writeln('Hello World');
+            $io->writeln('Hello World');
 
             return Command::SUCCESS;
         }

components/console/events.rst

@@ -209,36 +209,32 @@ method::
     for these constants to be available.
 
 If you use the Console component inside a Symfony application, commands can
-handle signals themselves. To do so, implement the
-:class:`Symfony\\Component\\Console\\Command\\SignalableCommandInterface` and subscribe to one or more signals::
+handle signals themselves by subscribing to the :class:`Symfony\\Component\\Console\\Event\\ConsoleSignalEvent` event::
 
-    // src/Command/SomeCommand.php
+    // src/Command/MyCommand.php
     namespace App\Command;
 
-    use Symfony\Component\Console\Command\Command;
-    use Symfony\Component\Console\Command\SignalableCommandInterface;
+    use Symfony\Component\Console\Attribute\AsCommand;
+    use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
 
-    class SomeCommand extends Command implements SignalableCommandInterface
+    #[AsCommand(name: 'app:my-command')]
+    class MyCommand
     {
         // ...
 
-        public function getSubscribedSignals(): array
+        #[AsEventListener(ConsoleSignalEvent::class)]
+        public function handleSignal(ConsoleSignalEvent $event): void
         {
-            // return here any of the constants defined by PCNTL extension
-            return [\SIGINT, \SIGTERM];
-        }
-
-        public function handleSignal(int $signal): int|false
-        {
-            if (\SIGINT === $signal) {
+            // set here any of the constants defined by PCNTL extension
+            if (in_array($event->getHandlingSignal(), [\SIGINT, \SIGTERM], true)) {
                 // ...
             }
 
             // ...
 
-            // return an integer to set the exit code, or
+            // set an integer exit code, or
             // false to continue normal execution
-            return 0;
+            $event->setExitCode(0);
         }
     }
 

components/console/helpers/cursor.rst

@@ -13,16 +13,16 @@ of the output:
     // src/Command/MyCommand.php
     namespace App\Command;
 
-    use Symfony\Component\Console\Command\Command;
+    use Symfony\Component\Console\Attribute\AsCommand;
     use Symfony\Component\Console\Cursor;
-    use Symfony\Component\Console\Input\InputInterface;
     use Symfony\Component\Console\Output\OutputInterface;
 
-    class MyCommand extends Command
+    #[AsCommand(name: 'app:my-command')]
+    class MyCommand
     {
         // ...
 
-        public function execute(InputInterface $input, OutputInterface $output): int
+        public function __invoke(OutputInterface $output): int
         {
             // ...
 

components/console/helpers/debug_formatter.rst

@@ -10,15 +10,14 @@ this:
 .. image:: /_images/components/console/debug_formatter.png
     :alt: Console output, with the first line showing "RUN Running figlet", followed by lines showing the output of the command prefixed with "OUT" and "RES Finished the command" as last line in the output.
 
-Using the debug_formatter
+Using the Debug Formatter
 -------------------------
 
-The formatter is included in the default helper set and you can get it by
-calling :method:`Symfony\\Component\\Console\\Command\\Command::getHelper`::
+The debug formatter helper can be instantiated directly as shown::
 
-    $debugFormatter = $this->getHelper('debug_formatter');
+    $debugFormatter = new DebugFormatterHelper();
 
-The formatter accepts strings and returns a formatted string, which you then
+It accepts strings and returns a formatted string, which you then
 output to the console (or even log the information or do anything else).
 
 All methods of this helper have an identifier as the first argument. This is a

components/console/helpers/formatterhelper.rst

@@ -1,15 +1,11 @@
 Formatter Helper
 ================
 
-The Formatter helper provides functions to format the output with colors.
-You can do more advanced things with this helper than you can in
-:doc:`/console/coloring`.
+The :class:`Symfony\\Component\\Console\\Helper\\FormatterHelper` helper provides
+functions to format the output with colors. You can do more advanced things with
+this helper than you can in :doc:`/console/coloring`::
 
-The :class:`Symfony\\Component\\Console\\Helper\\FormatterHelper` is included
-in the default helper set and you can get it by calling
-:method:`Symfony\\Component\\Console\\Command\\Command::getHelper`::
-
-    $formatter = $this->getHelper('formatter');
+    $formatter = new FormatterHelper();
 
 The methods return a string, which you'll usually render to the console by
 passing it to the

components/console/helpers/processhelper.rst

@@ -11,7 +11,7 @@ a very verbose verbosity (e.g. ``-vv``)::
 
     use Symfony\Component\Process\Process;
 
-    $helper = $this->getHelper('process');
+    $helper = new ProcessHelper();
     $process = new Process(['figlet', 'Symfony']);
 
     $helper->run($output, $process);

components/console/helpers/questionhelper.rst

@@ -2,11 +2,9 @@ Question Helper
 ===============
 
 The :class:`Symfony\\Component\\Console\\Helper\\QuestionHelper` provides
-functions to ask the user for more information. It is included in the default
-helper set and you can get it by calling
-:method:`Symfony\\Component\\Console\\Command\\Command::getHelper`::
+functions to ask the user for more information::
 
-    $helper = $this->getHelper('question');
+    $helper = new QuestionHelper();
 
 The Question Helper has a single method
 :method:`Symfony\\Component\\Console\\Helper\\QuestionHelper::ask` that needs an
@@ -27,18 +25,18 @@ Suppose you want to confirm an action before actually executing it. Add
 the following to your command::
 
     // ...
+    use Symfony\Component\Console\Attribute\AsCommand;
     use Symfony\Component\Console\Command\Command;
     use Symfony\Component\Console\Input\InputInterface;
     use Symfony\Component\Console\Output\OutputInterface;
     use Symfony\Component\Console\Question\ConfirmationQuestion;
 
-    class YourCommand extends Command
+    #[AsCommand(name: 'app:my-command')]
+    class MyCommand
     {
-        // ...
-
-        public function execute(InputInterface $input, OutputInterface $output): int
+        public function __invoke(InputInterface $input, OutputInterface $output): int
         {
-            $helper = $this->getHelper('question');
+            $helper = new QuestionHelper();
             $question = new ConfirmationQuestion('Continue with this action?', false);
 
             if (!$helper->ask($input, $output, $question)) {
@@ -91,7 +89,7 @@ if you want to know a bundle name, you can add this to your command::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
         $question = new Question('Please enter the name of the bundle', 'AcmeDemoBundle');
@@ -121,10 +119,10 @@ but ``red`` could be set instead (could be more explicit)::
     use Symfony\Component\Console\Question\ChoiceQuestion;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
         $question = new ChoiceQuestion(
             'Please select your favorite color (defaults to red)',
             // choices can also be PHP objects that implement __toString() method
@@ -184,10 +182,10 @@ this use :method:`Symfony\\Component\\Console\\Question\\ChoiceQuestion::setMult
     use Symfony\Component\Console\Question\ChoiceQuestion;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
         $question = new ChoiceQuestion(
             'Please select your favorite colors (defaults to red and blue)',
             ['red', 'blue', 'yellow'],
@@ -218,10 +216,10 @@ will be autocompleted as the user types::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $bundles = ['AcmeDemoBundle', 'AcmeBlogBundle', 'AcmeStoreBundle'];
         $question = new Question('Please enter the name of a bundle', 'FooBundle');
@@ -241,9 +239,9 @@ provide a callback function to dynamically generate suggestions::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         // This function is called whenever the input changes and new
         // suggestions are needed.
@@ -282,10 +280,10 @@ You can also specify if you want to not trim the answer by setting it directly w
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $question = new Question('What is the name of the child?');
         $question->setTrimmable(false);
@@ -308,10 +306,10 @@ the response to a question should allow multiline answers by passing ``true`` to
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $question = new Question('How do you solve world peace?');
         $question->setMultiline(true);
@@ -335,10 +333,10 @@ convenient for passwords::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $question = new Question('What is the database password?');
         $question->setHidden(true);
@@ -372,10 +370,10 @@ convenient for passwords::
         use Symfony\Component\Console\Question\ChoiceQuestion;
 
         // ...
-        public function execute(InputInterface $input, OutputInterface $output): int
+        public function __invoke(InputInterface $input, OutputInterface $output): int
         {
             // ...
-            $helper = $this->getHelper('question');
+            $helper = new QuestionHelper();
             QuestionHelper::disableStty();
 
             // ...
@@ -396,10 +394,10 @@ method::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $question = new Question('Please enter the name of the bundle', 'AcmeDemoBundle');
         $question->setNormalizer(function (string $value): string {
@@ -434,10 +432,10 @@ method::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $question = new Question('Please enter the name of the bundle', 'AcmeDemoBundle');
         $question->setValidator(function (string $answer): string {
@@ -494,10 +492,10 @@ You can also use a validator with a hidden question::
     use Symfony\Component\Console\Question\Question;
 
     // ...
-    public function execute(InputInterface $input, OutputInterface $output): int
+    public function __invoke(InputInterface $input, OutputInterface $output): int
     {
         // ...
-        $helper = $this->getHelper('question');
+        $helper = new QuestionHelper();
 
         $question = new Question('Please enter your password');
         $question->setNormalizer(function (?string $value): string {

components/console/helpers/table.rst

@@ -10,15 +10,16 @@ features, use the ``Table`` console helper explained in this article.
 To display a table, use :class:`Symfony\\Component\\Console\\Helper\\Table`,
 set the headers, set the rows and then render the table::
 
+    use Symfony\Component\Console\Attribute\AsCommand;
     use Symfony\Component\Console\Command\Command;
     use Symfony\Component\Console\Helper\Table;
-    use Symfony\Component\Console\Input\InputInterface;
     use Symfony\Component\Console\Output\OutputInterface;
     // ...
 
-    class SomeCommand extends Command
+    #[AsCommand(name: 'app:my-command')]
+    class MyCommand
     {
-        public function execute(InputInterface $input, OutputInterface $output): int
+        public function __invoke(OutputInterface $output): int
         {
             $table = new Table($output);
             $table
@@ -472,9 +473,10 @@ The only requirement to append rows is that the table must be rendered inside a
     use Symfony\Component\Console\Helper\Table;
     // ...
 
-    class SomeCommand extends Command
+    #[AsCommand(name: 'app:my-command')]
+    class MyCommand
     {
-        public function execute(InputInterface $input, OutputInterface $output): int
+        public function __invoke(OutputInterface $output): int
         {
             $section = $output->section();
             $table = new Table($section);

components/console/helpers/tree.rst

@@ -26,22 +26,17 @@ inside your console command::
     namespace App\Command;
 
     use Symfony\Component\Console\Attribute\AsCommand;
-    use Symfony\Component\Console\Command\Command;
     use Symfony\Component\Console\Helper\TreeHelper;
     use Symfony\Component\Console\Helper\TreeNode;
-    use Symfony\Component\Console\Input\InputInterface;
-    use Symfony\Component\Console\Output\OutputInterface;
     use Symfony\Component\Console\Style\SymfonyStyle;
 
-    #[AsCommand(name: 'app:some-command', description: '...')]
-    class SomeCommand extends Command
+    #[AsCommand(name: 'app:my-command', description: '...')]
+    class MyCommand
     {
         // ...
 
-        protected function execute(InputInterface $input, OutputInterface $output): int
+        public function __invoke(SymfonyStyle $io): int
         {
-            $io = new SymfonyStyle($input, $output);
-
             $node = TreeNode::fromValues([
                 'config/',
                 'public/',