Drupal8 simplepage v2

Drupal 8 simple page
A walk for Drupal 8 module development

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

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

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

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

Mi ﬁrst module
Drupal
generate:module

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

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 /

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

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

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; 
}

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']))); 
}
}

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.')); 
}

Forms
$output['bottom']['form'] = [ 
'#type' => 'container', 
'#attributes' => ['class' => ['left']], 
'form' => Drupal::formBuilder()-
>getForm('Drupalexample_dyb_landingForm
ContactForm'), 
];

Services
*This is a spanish joke
*

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

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

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 []; 
}

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 []; 
}

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

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

 
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

My ﬁrst theme
Drupal generate:theme

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

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

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

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

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

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

Thanks and enjoy this
DrupalSummer!
@estoyausenteSamuel Solís

Drupal8 simplepage v2

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