Drupal duel : Drupal 7&8 side by side

Voici, mis cote à cote 2 modules hello-world en Drupal 7 et Drupal 8 (beta9) qui mettent en œuvre les concepts principaux qu’on retrouve dans la plupart des modules :

  • menus et chemins d’accès
  • création de block
  • création d’un formulaire
  • theming
  • accès aux “variables”

Comme vous pouvez le constater, les changements sont nombreux, mais au final :

  • c’est la même chose écrit différement (pour simplifier : on passe du fonctionnel à de l’objet)
  • si on omet les “namespaces”, ce n’est pas foncièrement plus verbeux, mais le code est éclaté en 7 fichiers en Drupal8 au lieu de 3
Drupal7 Drupal8

hello.info

hello.info.yml

name = Hello world
description = Minimalist Hello World in Drupal 7
package = Example modules
core = 7.x
files[] = hello.module
name: Hello World
type: module
description: Minimalist Hello World in Drupal 8
package: Example modules
core: 8.x

hello.module

function hello_menu() {

hello.links.menu.yml

$items['helloworld'] = array(
  'title' => 'Hello world',
hello.main:
  title: Hello world
  route_name: hello.world
$items['admin/config/content/hello'] = array(
  'title' => 'Hello config',
hello.form:
  title: Hello config
  route_name: hello.form

hello.routing.yml

$items['helloworld'] = array(
  'page callback' => '_page_hello_world',
  'access callback' => TRUE,
hello.world:
  path: 'helloworld'
  defaults:
    _controller: '\Drupal\hello\Controller\HelloRouteController::index'
  requirements:
    _access: 'TRUE'
$items['admin/config/content/hello'] = array(
  'page callback' => 'drupal_get_form',
  'page arguments' => array('hello_config_form'),
  'access arguments' => array('access hello content')
hello.form:
  path: 'admin/config/content/hello'
  defaults:
    _form: '\Drupal\hello\Form\HelloForm'
  requirements:
    _permission: 'access hello content'
function hello_theme() {
  return array(
    'hello_text' => array(
    'template' => 'hello-text',
    'variables' => array('text' => NULL)),
  );
}
function hello_theme() {
  return array(
    'hello_text' => array(
    'template' => 'hello-text',
    'variables' => array('text' => NULL)),
  );
}

src/Controller/HelloRouteController.php

function _page_hello_world() {
  return array( '#markup' => '<p>Hello world page text</p>' );
}
namespace Drupal\hello\Controller;
use Drupal\Core\Controller\ControllerBase;
class HelloRouteController extends ControllerBase {
  public function index() {
    return array('#markup' => '<p>Hello world page text</p>');
  }
}

src/Plugin/Block/HelloBlock.php

function hello_block_info() {
  $blocks['hello'] = array(
    'info' => t('Hello world block title'),
  );
  return $blocks;
}
namespace Drupal\hello\Plugin\Block;
use Drupal\Core\Block\BlockBase;
use Drupal\block\Annotation\Block;
use Drupal\Core\Annotation\Translation;
use Drupal\Core\Session\AccountInterface;
/**
* Provides a 'Hello' block.
* @Block(
* id = "hello_block",
* admin_label = @Translation("Hello world block title")
* )
*/
function hello_block_view($delta = '') {
  switch ($delta) {
    case 'hello':
      $block['subject'] = t('Hello world');
      $block['content'] = theme('hello_text', array('text' => 
        variable_get('hello_value', 'hello')));
      break;
  }
  return $block;
}
class HelloBlock extends BlockBase {
  public function build() {
    return array('#theme' => 'hello_text', '#text' =>
      \Drupal::config('hello.settings')->get('hello_value'));
  }
}

src/Form/HelloForm.php

function hello_config_form() {
namespace Drupal\hello\Form;
use Drupal\Core\Form\FormInterface;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
class HelloForm extends FormBase {
  public function getFormID() {
    return 'hello_form';
  }
  public function buildForm(array $form, 
    FormStateInterface $form_state) {
  $form['hello_config'] = array(
    '#type' => 'textfield',
    '#title' => t('Who are you ?'),
    '#size' => 10,
    '#description' => t('Text for the hello world block.'),
    '#default_value' => 
       variable_get('hello_value', 'anonymous'),
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
  );
  return $form;
}
  $form['hello_config'] = array(
    '#type' => 'textfield',
    '#title' => t('Who are you ?'),
    '#size' => 10,
    '#description' => t('Text for the hello world block.'),
    '#default_value' => 
       \Drupal::config('hello.settings')->get('hello_value'),
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
  );
  return $form;
}
function hello_config_form_submit($form, $form_state) {
  variable_set('hello_value', 
    $form_state['values']['hello_config']);
}
public function submitForm(array &$form, 
  FormStateInterface $form_state) {
  $form_values = $form_state->getValues();
  \Drupal::service('config.factory')->getEditable('hello.settings')
->set('hello_value', $form_values['hello_config'])
->save();
}

drupal7-hello-world/hello-text.tpl.php

Hi from template : <?php print $variables['text']; ?>
Hi from template : {{ text }}

 

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