The document details a presentation on developing a simple page module for Drupal 8, covering topics like configuration management, routing, forms, services, and theming. It includes examples of creating custom modules, controllers, forms, and implementing dependency injection. Additionally, it provides links to useful resources and encourages engagement with the Drupal community.

2. Drupal 8 simple page
A walk for Drupal 8 module development

3. @estoyausenteSamuel Solís

4. </spam>
Coupon code 10€ discount*
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7. GO!

8. D7 Site building?

9. D7 modules?

10. PHP development?

11. Drupal 7

12. Drupal 8

13. This slides have examples
based on my experience
for more information please read
the API page

14. Index
1. Configuration manager
2. Routing
3. Forms
4. Services
5. Theming

15. Configuration manager
Impresiones
1. ¡Funciona!
2. ¡Funciona bien!
3. Overrides entre entornos -> Settings
4. ¿Menús?
5. Un poco caos

16. Configuration manager
Impresiones
1. ¡Funciona!
2. ¡Funciona bien!
3. Overrides entre entornos -> Settings
4. ¿Menús?
5. Un poco caos

17. Configuration manager
Impresiones
1. ¡Funciona!
2. ¡Funciona bien!
3. Overrides entre entornos -> Settings
4. ¿Menús?
5. Un poco caos

18. Configuration manager
Impresiones
1. ¡Funciona!
2. ¡Funciona bien!
3. Overrides entre entornos -> Settings
4. ¿Menús?
5. Un poco caos

19. Configuration manager
Impresiones
1. ¡Funciona!
2. ¡Funciona bien!
3. Overrides entre entornos -> Settings
4. ¿Menús?
5. Un poco caos

20. Configuration manager
Take a look
1. https://www.drupal.org/project/config_tools
2. https://www.drupal.org/project/config_update
3. https://www.drupal.org/project/config_sync
4. https://www.drupal.org/project/config_devel
5. https://www.drupal.org/project/features

21. Mi first module
Drupal
generate:module

22. Routing
example_dyb_landing_content:
path: '/landing-my-awsome-path'
defaults:
_controller: 'Drupalexample_dyb_landing
ControllerLandingContentController::pageContent'
requirements:
_access: 'TRUE'
example_dyb_landing/example_dyb_landing.routing.yml

23. Routing
example_dyb_landing_content:
path: '/landing-my-awsome-path'
defaults:
_controller: 'Drupalexample_dyb_landing
ControllerLandingContentController::pageContent'
requirements:
_access: 'TRUE'
example_dyb_landing/example_dyb_landing.routing.yml
Start with slash /

24. Controller
namespace Drupalexample_dyb_landingController;
use DrupalCoreControllerControllerBase;
use DrupalCoreUrl;
class LandingContentController extends
ControllerBase {
public function pageContent() {
$content = []; //Render array
return $content;
}
}
example_dyb_landing/src/Controllers/LandingContentController.php

25. Forms
namespace Drupalexample_dyb_landingForm;
use DrupalCoreFormFormBase;
use DrupalCoreFormFormStateInterface;
class ContactForm extends FormBase {
public function getFormId() {
return 'contact_form';
}
example_dyb_landing/src/Form/ContactForm.php

26. Forms
public function buildForm(array $form,
FormStateInterface $form_state) {
$form['mail'] = array(
'#type' => 'email',
'#title' => $this->t('Email'),
'#required' => TRUE,
'#attributes' => ['class' => ['formcontrol']],
);
return $form;
}
example_dyb_landing/src/Form/ContactForm.php

27. Forms
public function validateForm(array &$form,
FormStateInterface $form_state) {
$values = $form_state->getValues();
if(!Drupal::service('email.validator')-
>isValid($values['mail'])) {
$form_state->setErrorByName('mail', $this-
>t('The email address %mail is not valid.',
array('%mail' => $values['mail'])));
}
}
example_dyb_landing/src/Form/ContactForm.php

28. Forms
public function submitForm(array &$form, FormStateInterface
$form_state) {
$values = $form_state->getValues();
$to = Drupal::config('system.site')->get('mail');
$language_interface = Drupal::languageManager()-
>getCurrentLanguage();
Drupal::service('plugin.manager.mail')-
>mail('example_dyb_landing', 'contact_message', $to,
$language_interface, $values, 'no-replyđ@mail.com');
drupal_set_message($this->t('Thank for contact us. Your
message has been sent correctly.'));
}
example_dyb_landing/src/Form/ContactForm.php

29. Forms
$output['bottom']['form'] = [
'#type' => 'container',
'#attributes' => ['class' => ['left']],
'form' => Drupal::formBuilder()-
>getForm('Drupalexample_dyb_landingForm
ContactForm'),
];
example_dyb_landing/src/Form/ContactForm.php

30. Forms
$output['bottom']['form'] = [
'#type' => 'container',
'#attributes' => ['class' => ['left']],
'form' => Drupal::formBuilder()-
>getForm('Drupalexample_dyb_landingForm
ContactForm'),
];
example_dyb_landing/src/Form/ContactForm.php

31. Services
*This is a spanish joke
*

32. Services
services:
rest_client.client:
class: Drupalrest_clientRestClient
example_dyb_landing/rest_client.services.yml

33. Services
namespace Drupalrest_client;
/**
* Class RestClient
* @package Drupalrest_client
*/
class RestClient{
protected $url;
public function __construct() {
$this->url = 'myserver.com';
}
example_dyb_landing/src/RestClient.php

34. Services
public function getSpecialities($country = 'ES') {
$cid = 'rest_client_getSpecialities_' . $country;
if ($cache = Drupal::cache()->get($cid)) {
return $cache->data;
}
//$output = getSomeStuff();
Drupal::cache()->set($cid, $output);
return $output;
}
return [];
}
example_dyb_landing/src/RestClient.php

35. Servicios
public function getSpecialities($country = 'ES') {
$cid = 'rest_client_getSpecialities_' . $country;
if ($cache = Drupal::cache()->get($cid)) {
return $cache->data;
}
//$output = getSomeStuff();
Drupal::cache()->set($cid, $output);
return $output;
}
return [];
}
example_dyb_landing/src/RestClient.php

36. dependencies:
- rest_client
example_dyb_landing/example_dyb_landing.info.yml
Dependency injection

37. namespace Drupalregister_formForm;
use Drupalrest_clientRestClient;
class RegisterForm extends FormBase{
protected $client;
public function __construct(RestClient $client) {
$this->client = $client;
}
public static function create(ContainerInterface $container) {
return new static(
$container->get('rest_client.client'),
);
}
example_dyb_landing/src/Form/RegisterForm.php
Dependency injection

38. Dependency injection
public function buildForm(array $form,
FormStateInterface $form_state) {
$form['speciality'] = [
'#type' => 'select',
'#options' => $this->client->getSpecialities(),
'#title' => $this->t('Speciality'),
'#required' => TRUE,
'#attributes' => ['class' => ['formcontrol']],
];
return $form;
}
example_dyb_landing/src/Form/RegisterForm.php

39. My first theme
Drupal generate:theme

40. Mi primer theme
name: public
type: theme
description: Public theme.
package: Other
core: 8.x
libraries:
- public/global-styling
base theme: classy
regions:
content: Content
header: Header
footer: Footer
public/public.info.yml

41. Add css/js
global-styling:
version: 1.x
css:
theme:
css/style.css: {}
js:
js/public.js: {}
dependencies:
- core/jquery
- core/drupal
- core/drupalSettings
public/public.libraries.yml

42. Preprocess
function public_preprocess_breadcrumb(&$variables){
//Add current page to breadcrumb.
$request = Drupal::request();
$route_match = Drupal::routeMatch();
$page_title = Drupal::service('title_resolver')-
>getTitle($request, $route_match->getRouteObject());
$variables['breadcrumb'][] = array(
'text' => $page_title,
);
}
public/public.theme

43. Twig
{% if breadcrumb %}
<nav class="breadcrumbs" role="navigation" aria-
labelledby="system-breadcrumb">
<h2 class="visually-hidden">{{ 'Breadcrumb'|t }}</h2>
<ol class="itemlistbread">
{% for item in breadcrumb %}
<li class="itembread">
{% if item.url %}
<a href="{{ item.url }}"
class="itembread__link">{{ item.text }}</a>
{% else %}
<span>{{ item.text }}</span>
{% endif %}
</li>
{% endfor %}
</ol>
</nav>
{% endif %}
public/templates/elements/breadcrumb.html.twig

44. Templates
<?php
db_query('DROP TABLE {users}’);
?>

45. Templates
<?php
db_query('DROP TABLE {users}’);
?>

46. Homework
• Caché
• Composer
• REST
• Migrate
• The change is so big…

47. Questions?

49. Thanks and enjoy this
DrupalSummer!
@estoyausenteSamuel Solís