code – Dakwamine

[Drupal] Create an event subscriber

Instructions I will be creating a dedicated module using Drupal Console for this event subscriber. But feel free to use your own if you already have one! (don’t forget to backup) Access the drupal root folder in command line. Generate a new module:

dakwamine@debian-drupal:/var/www/html/drupal$ drupal generate:module

 Enter the new module name:
 &gt; Test Module          

 Enter the module machine name [test_module]:
 &gt; 

 Enter the module Path [/modules/custom]:
 &gt; 

 Enter module description [My Awesome Module]:
 &gt; 

 Enter package name [Custom]:
 &gt; 

 Enter Drupal Core version [8.x]:
 &gt; 

 Do you want to generate a .module file (yes/no) [yes]:
 &gt; no

 Define module as feature (yes/no) [no]:
 &gt; 

 Do you want to add a composer.json file to your module (yes/no) [yes]:
 &gt; no

 Would you like to add module dependencies (yes/no) [no]:
 &gt; 


 Do you confirm generation? (yes/no) [yes]:
 &gt; 

Generated or updated files
 Site path: /var/www/html/drupal
 1 - modules/custom/test_module/test_module.info.yml

dakwamine@debian-drupal:/var/www/html/drupal$ drupal generate:module

Enter the new module name:

> Test Module

Enter the module machine name [test_module]:

Enter the module Path [/modules/custom]:

Enter module description [My Awesome Module]:

Enter package name [Custom]:

Enter Drupal Core version [8.x]:

Do you want to generate a .module file (yes/no) [yes]:

> no

Define module as feature (yes/no) [no]:

Do you want to add a composer.json file to your module (yes/no) [yes]:

> no

Would you like to add module dependencies (yes/no) [no]:

Do you confirm generation? (yes/no) [yes]:

Generated or updated files

Site path: /var/www/html/drupal

1 - modules/custom/test_module/test_module.info.yml

Generate the event subscriber. We will subscribe to the kernel.request event: […]

[Drupal] Service dependency injection in a service type class

The code

services:
  my_module.event_subscriber:
    # Your service class
    class: Drupal\my_module\Entity\EventSubscriber\MyModuleSubscriber

    # Add your services to load here in the array
    arguments: ['@current_user']

    tags:
      # For this example, I am making an event subscriber class
      - { name: event_subscriber }

services:

my_module.event_subscriber:

# Your service class

class: Drupal\my_module\Entity\EventSubscriber\MyModuleSubscriber

# Add your services to load here in the array

arguments: ['@current_user']

tags:

# For this example, I am making an event subscriber class

- { name: event_subscriber }

<?php

namespace Drupal\my_module\Entity\EventSubscriber;

use Drupal\Core\Session\AccountProxy;
use Symfony\Component\EventDispatcher\Event;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;

class MyModuleSubscriber implements EventSubscriberInterface {

  /**
   * Current user service.
   * @var AccountProxy
   */
  protected $currentUser;

  public function __construct(AccountProxy $current_user) {
    // Reference the current_user service
    $this->currentUser = $current_user;
  }

  static function getSubscribedEvents() {
    // Stuff related to events subscribing in Drupal
    $events[KernelEvents::REQUEST][] = ['kernel_request'];
    return $events;
  }

  /**
   * @param GetResponseEvent $event
   */
  public function kernel_request(Event $event) {
    // Do stuff here, using $this->currentUser
  }

}

<?php

namespace Drupal\my_module\Entity\EventSubscriber;

use Drupal\Core\Session\AccountProxy;

use Symfony\Component\EventDispatcher\Event;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;

use Symfony\Component\HttpKernel\Event\GetResponseEvent;

use Symfony\Component\HttpKernel\KernelEvents;

class MyModuleSubscriber implements EventSubscriberInterface {

/**

* Current user service.

* @var AccountProxy

protected $currentUser;

public function __construct(AccountProxy $current_user) {

// Reference the current_user service

$this->currentUser = $current_user;

}

static function getSubscribedEvents() {

// Stuff related to events subscribing in Drupal

$events[KernelEvents::REQUEST][] = ['kernel_request'];

return $events;

}

/**

* @param GetResponseEvent $event

public function kernel_request(Event $event) {

// Do stuff here, using $this->currentUser

}

Additional Information Declare the services your class will use in the .services.yml file of your module. Unlike plugin type class service dependency injection, there is no create method to define the needed services. The __construct signature needs to respect the declared arguments from the .services.yml file. Originally made and tested on […]

[Drupal] Service dependency injection in a plugin type class

The code

<?php

namespace Drupal\my_module\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Entity\EntityTypeManager;    // Example service class to load and use
use Drupal\Core\Entity\Query\QueryFactory;   // Another example service class to load and use
use Symfony\Component\DependencyInjection\ContainerInterface;

class MyModuleController extends ControllerBase {

  /**
   * @var QueryFactory
   */
  protected $queryFactory;

  /**
   * @var EntityTypeManager
   */
  protected $entityTypeManager;

  public static function create(ContainerInterface $container) {
    // Get your services here.
    return new static(
        $container->get('entity.query'), $container->get('entity_type.manager')
    );
  }

  public function __construct(QueryFactory $query_factory, EntityTypeManager $entity_type_manager) {
    // Reference your services here for future use
    $this->queryFactory = $query_factory;
    $this->entityTypeManager = $entity_type_manager;
  }

  public function content() {
    // Do Controller stuff...
    $ids = $this->queryFactory->get('node')->condition('type', 'article')->pager(15)->execute();
    $entities = $this->entityTypeManager->getStorage('node')->loadMultiple($ids);

    // etc...
  }

}

<?php

namespace Drupal\my_module\Controller;

use Drupal\Core\Controller\ControllerBase;

use Drupal\Core\Entity\EntityTypeManager; // Example service class to load and use

use Drupal\Core\Entity\Query\QueryFactory; // Another example service class to load and use

use Symfony\Component\DependencyInjection\ContainerInterface;

class MyModuleController extends ControllerBase {

/**

* @var QueryFactory

protected $queryFactory;

/**

* @var EntityTypeManager

protected $entityTypeManager;

public static function create(ContainerInterface $container) {

// Get your services here.

return new static(

$container->get('entity.query'), $container->get('entity_type.manager')

);

}

public function __construct(QueryFactory $query_factory, EntityTypeManager $entity_type_manager) {

// Reference your services here for future use

$this->queryFactory = $query_factory;

$this->entityTypeManager = $entity_type_manager;

}

public function content() {

// Do Controller stuff...

$ids = $this->queryFactory->get('node')->condition('type', 'article')->pager(15)->execute();

$entities = $this->entityTypeManager->getStorage('node')->loadMultiple($ids);

// etc...

}

Additional Information Unlike service type class service dependency injection, there may be no need to implement an interface to be able to load the needed services, such as extending from ControllerBase. So if you are extending from a class which already has the dependency injection implementation, you can just override the create […]

Unity3D.tips[2]: Intersection point between two lines in 2D

The code

/// <summary>
/// Gets the coordinates of the intersection point of two lines.
/// </summary>
/// <param name="A1">A point on the first line.</param>
/// <param name="A2">Another point on the first line.</param>
/// <param name="B1">A point on the second line.</param>
/// <param name="B2">Another point on the second line.</param>
/// <param name="found">Is set to false of there are no solution. true otherwise.</param>
/// <returns>The intersection point coordinates. Returns Vector2.zero if there is no solution.</returns>
public Vector2 GetIntersectionPointCoordinates(Vector2 A1, Vector2 A2, Vector2 B1, Vector2 B2, out bool found)
{
    float tmp = (B2.x - B1.x) * (A2.y - A1.y) - (B2.y - B1.y) * (A2.x - A1.x);

    if (tmp == 0)
    {
        // No solution!
        found = false;
        return Vector2.zero;
    }

    float mu = ((A1.x - B1.x) * (A2.y - A1.y) - (A1.y - B1.y) * (A2.x - A1.x)) / tmp;

    found = true;

    return new Vector2(
        B1.x + (B2.x - B1.x) * mu,
        B1.y + (B2.y - B1.y) * mu
    );
}

/// <summary>

/// Gets the coordinates of the intersection point of two lines.

/// </summary>

/// <param name="A1">A point on the first line.</param>

/// <param name="A2">Another point on the first line.</param>

/// <param name="B1">A point on the second line.</param>

/// <param name="B2">Another point on the second line.</param>

/// <param name="found">Is set to false of there are no solution. true otherwise.</param>

/// <returns>The intersection point coordinates. Returns Vector2.zero if there is no solution.</returns>

public Vector2 GetIntersectionPointCoordinates(Vector2 A1, Vector2 A2, Vector2 B1, Vector2 B2, out bool found)

{

float tmp = (B2.x - B1.x) * (A2.y - A1.y) - (B2.y - B1.y) * (A2.x - A1.x);

if (tmp == 0)

{

// No solution!

found = false;

return Vector2.zero;

}

float mu = ((A1.x - B1.x) * (A2.y - A1.y) - (A1.y - B1.y) * (A2.x - A1.x)) / tmp;

found = true;

return new Vector2(

B1.x + (B2.x - B1.x) * mu,

B1.y + (B2.y - B1.y) * mu

);

}

The maths behind To get the point where two lines intersect, we will do some maths. To the mathematicians who will come across this post, I’m truly sorry for the heart attacks or strokes you may experience by reading this post. Ok, let’s take a look on the figure: First, sorry, I […]

Unity3D.tips[1]: Strategies to prevent the collision when a ball rolls from a planar surface to another

Method 1: mega box collider Use a single BoxCollider for all your planes. For example, if you have multiple aligned planes, remove their Collider component (Box, Mesh, whichever they have) and on only one of the planes, add a BoxCollider and adjust its center and size values in the component’s inspector to encapsulate all the […]

[Android] .hgignore pour un projet Android Studio

Je mets le contenu du fichier .hgignore que j’utilise pour mes projets sur Android Studio. Je suis parti du .gitignore de base livré avec un nouveau projet dans Android Studio et je l’ai complété en m’inspirant de plusieurs réponses sur Stack Overflow. À noter que la configuration suivante est réglée pour que le projet soit […]

Petit script VB d’export de table Excel vers .txt

Vous avez besoin d’un petit script en Visual Basic pour faire un export simple d’un tableau Excel vers un fichier texte .txt ? Alors j’ai peut-être le script dont vous avez besoin ! Enthousiasmé Je ne connais pas vraiment VB, mais une lecture rapide de quelques tutoriaux m’a permis de faire ce que je cherchais comme comportement. […]