How to access an application parameters from a service?

Question

From my controllers, I access the application parameters (those in /app/config) with

$this->container->getParameter(\'my_param\')
<         


        

Answer 1

With Symfony 4.1 the solution is quite simple.

Here is a snippet from the original post:

// src/Service/MessageGenerator.php
// ...

use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;

class MessageGenerator
{
    private $params;

    public function __construct(ParameterBagInterface $params)
    {
        $this->params = $params;
    }

    public function someMethod()
    {
        $parameterValue = $this->params->get('parameter_name');
        // ...
    }
}

Link to the original post: https://symfony.com/blog/new-in-symfony-4-1-getting-container-parameters-as-a-service

Answer 2

In symfony 4, we can access the parameters by means of dependency injection:

Services:

   use Symfony\Component\DependencyInjection\ContainerInterface as Container;

   MyServices {

         protected $container;
         protected $path;

         public function __construct(Container $container)
         {
             $this->container = $container;
             $this->path = $this->container->getParameter('upload_directory');
         }
    }

parameters.yml:

parameters:
     upload_directory: '%kernel.project_dir%/public/uploads'

Answer 3

There is a very clean new way to achieve it since symfony 4.1

<?php
// src/Service/MessageGeneratorService.php

use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;

class MessageGeneratorService
{
 private $params;
 public function __construct(ParameterBagInterface $params)
 {
      $this->params = $params;
 }
 public function someMethod()
 {
     $parameterValue = $this->params->get('parameter_name');
...
 }
}

source : https://symfony.com/blog/new-in-symfony-4-1-getting-container-parameters-as-a-service.