John Davidson

Message:

I have a Symfony Console app and I want to use it with autocomplete but autocoplite doesn't work. When I click tab nothing happens.

My app works successfully from the command line if I type like this:

./myapp generate-constants nomenclature

Then it prints

Hello World!, nomenclature

This is my script named myapp

#!/usr/bin/env php

<?php

require 'bootstrap.php';



use MyApp\Core\Console\GenerateConstantsCommand;

use Symfony\Component\Console\Application;



$app = new Application();

$app->add(new GenerateConstantsCommand());

$app->run();

And this is GenerateConstantsCommand.php

<?php

namespace MyApp\Core\Console;

use LogicException;

use Symfony\Component\Console\Command\Command;

use Symfony\Component\Console\Completion\CompletionInput;

use Symfony\Component\Console\Completion\CompletionSuggestions;

use Symfony\Component\Console\Input\InputInterface;

use Symfony\Component\Console\Output\OutputInterface;

use Symfony\Component\Console\Input\InputArgument;



class GenerateConstantsCommand extends Command

{

    protected function configure()

    {

        $this->setName('generate-constants')

            ->setDescription('Generate constsants')

            ->setHelp('Demonstration of custom commands created by Symfony Console component.')

            ->addArgument('nomenclature', InputArgument::REQUIRED, 'Pass the nomenclature');

    }





    protected function execute(InputInterface $input, OutputInterface $output)

    {

        $output->writeln(sprintf('Hello World!, %s', $input->getArgument('nomenclature')));

        return 0;

    }



    public function complete(CompletionInput $input, CompletionSuggestions $suggestions): void

    {

        if ($input->mustSuggestOptionValuesFor('nomenclature')) {

            $suggestions->suggestValues(['json', 'xml']);

        }

    }

}

What I am doing wrong? Why autocomplete doesn't work?

Also I have tried with stecman/symfony-console-completion but when I run eval $(./myapp _completion --generate-hook) the cursor goes to new line and stays there forever.

I use Bash 5.0.17(1)-release, Ubuntu 20.04.4 LTS, Symfony Console 5.4.7, and PHP 7.3.26.

---

My Answer:
't have a built-in autocomplete feature like some other programming languages, but you can achieve similar functionality using libraries or plugins. One popular option is the jQuery UI Autocomplete plugin, which allows you to easily add autocomplete functionality to your PHP web applications. You can also use AJAX to fetch data from a database or API and populate the autocomplete suggestions dynamically. Additionally, some PHP frameworks like Laravel have built-in support for autocomplete features, making it easier to implement in your projects.