How to create a custom service Drupal?

Submitted by admin on 30 July 2022
d7

We can achieve this by using create a service and for custom service we required to create custom module.

Step 1: Create the custom_module.info.yml

yml Copy
name: 'My Module'
description: 'Custom Module'
package: Custom
type: module
core: 8.x

Step 2: Create the custom_module.services.yml file in your custom module

yml Copy
services:
  custom_module.custom_services:
    class: Drupal\custom_module\CustomService
    arguments: ['@current_user']

Arguments contains services name that we injected inside our custom service. i.e.   '@current_user' is in our case.

Step:3 Create the service class  under src/CustomService.php :

php Copy

<?php

namespace Drupal\custom_module;

use Drupal\Core\Session\AccountInterface;

/**
 * Class CustomService
 * @package Drupal\custom_module\Services
 */
class CustomService {

  protected $currentUser;

  /**
   * CustomService constructor.
   * @param AccountInterface $currentUser
   */
  public function __construct(AccountInterface $currentUser) {
    $this->currentUser = $currentUser;
  }


  /**
   * @return \Drupal\Component\Render\MarkupInterface|string
   */
  public function getData() {
    return $this->currentUser->getDisplayName();
  }

}

Step:4 Create the service class  under src/CustomService.php :

php Copy

<?php

/**
 *  run cron
 */
function custom_module_preprocess_node(&$variables){

  $data = \Drupal::service('custom_module.custom_services')->getData();
  var_dump($data);
}

d9