How to get application root path in Symfony 4 Console Command

Question

I have a simple Symfony 4 Console application. In execute() method i need to print application root path.

This $this->getContainer()->get('kernel')->getRootDir() - don't work.
This $this->get('kernel')->getRootDir(); - don't work.
This $this->get('parameter_bag')->get('kernel.project_dir'); - don't work.

How can i get application root path?

Answer 1

I suggest not injecting container to the command but passing the param explicitly in service definition

src/Command

class YourCommand extends Command
{
    private $path; 

    public function __construct(string $path) 
    {
         $this->path = $path;
    }

    public function (InputInterface $input, OutputInterface $output)
    {
       echo $this->path;
    }
}

config/services.yaml

services:
    # ...

    App\Command\YourCommand:
        arguments:
            $path: '%kernel.project_dir%'