Чтение и запись в конфигурацию drupal (8).

# see https://www.drupal.org/docs/drupal-apis/configuration-api/configuration-api-overview

name: 'Read Write Config'
type: module
description: 'Example on how to write and read to drupal config'
core: 8.x
package: 'Dev Examples'

<?php

/**
 * Implements hook_theme().
 */
function rw_config_theme($existing, $type, $theme, $path) {

  return [
    'rw_config_listing' => [
      'render element' => 'children',
      'template' => 'rw-config-listing', #name of the template file +.html.twig
      'variables' => [
        'data' => FALSE
      ]
    ]
  ];
}

#see srcControllerConController class
rw_config.r_test:
 path: '/rwconfig/tests/page'
 defaults:
   _controller: 'Drupalrw_configControllerConController::showCats'
   _title: 'Rw Config Test Page'
 requirements:
   _permission: 'access content'

#see srcFormRwConfigSettingsForm class
rw_config.config_form:
 path: '/rw_config/config_settings'
 defaults:
   _form: 'Drupalrw_configFormRwConfigSettingsForm'
   _title: 'Rw Config Test Page'
 requirements:
   _permission: 'access content' # should be a defined better permission

# ---- Start of rw_config.settings.yml file --------------

# Contains the default values on install and can be
# overridden in our config settings form, accessible
# on route `<yoursite.com>/rw_config/config_settings`

api_key: 'Test default api_key on install'
app_title: 'Test default app title on install'
show_pictures: false


# ---- End of rw_config.settings.yml file --------------

# ---- Start of rw_config.schema.yml file --------------
# Defines rw_config.settings schema
rw_config.settings:
  type: config_object
  label: 'Read Write Config Example'
  mapping:
    api_key:
      type: string
      label: 'API key'
    app_title:
      type: string
      label: 'The app title'
    show_pictures:
      type: boolean
      label: 'Control if picture display on test page'

# ---- End of rw_config.schema.yml file --------------

<?php
// RwConfigSettingsForm.php start ------------------------------------------------

namespace Drupalrw_configForm;


use DrupalCoreFormConfigFormBase;
use DrupalCoreFormFormStateInterface;

/**
* Class RwConfigSettingsForm
*
* @package Drupalrw_configForm
*
* see https://www.drupal.org/docs/drupal-apis/configuration-api/working-with-configuration-forms
*/
class RwConfigSettingsForm extends ConfigFormBase {

 protected function getEditableConfigNames() {
   return ['rw_config.settings'];
 }

 public function getFormId() {
   return 'rw_config_app_settings';
 }

 public function buildForm(array $form, FormStateInterface $form_state) {
   $config = $this->config('rw_config.settings');

   $form['api_key'] = [
     '#default_value' => $config->get('api_key'),
     '#description' => $this->t('Your api key give at https://thecatapi.com/'),
     '#maxlength' => 40,
     '#required' => TRUE,
     '#title' => $this->t('API key'),
     '#type' => 'textfield',
   ];

   $form['app_title'] = [
     '#default_value' => $config->get('app_title'),
     '#description' => $this->t('Example page title'),
     '#maxlength' => 40,
     '#required' => TRUE,
     '#title' => $this->t('App title'),
     '#type' => 'textfield',
   ];

   $form['show_pictures'] = [
     '#default_value' => $config->get('show_pictures'),
     '#description' => $this->t('Show pictures '),
     '#title' => $this->t('Control if picture display on test page : ..../rwconfig/tests/page'),
     '#type' => 'checkbox',
   ];


   return parent::buildForm($form, $form_state);
 }


 public function submitForm(array &$form, FormStateInterface $form_state) {

   # save to config and clear cache
   $config = $this->config('rw_config.settings');
   $config
     ->set('api_key', $form_state->getValue('api_key'))
     ->set('app_title', $form_state->getValue('app_title'))
     ->set('show_pictures', $form_state->getValue('show_pictures'))
     ->save();

   // clear cache
   drupal_flush_all_caches();

   parent::submitForm($form, $form_state);
 }

}


// RwConfigSettingsForm.php End ------------------------------------------------

<?php
// ConController.php Start ------------------------------------------------
namespace Drupalrw_configController;


use DrupalComponentSerializationJson;
use DrupalCoreConfigConfigFactoryInterface;
use DrupalCoreControllerControllerBase;
use GuzzleHttpClient;
use SymfonyComponentDependencyInjectionContainerInterface;

class ConController extends ControllerBase {


 /**
  * @var DrupalCoreConfigConfigFactoryInterface
  */
 protected $configFactory;

 /**
  * @var GuzzleHttpClient
  */
 private $client;

 public function __construct(ConfigFactoryInterface $configFactory, Client $client) {
   $this->configFactory = $configFactory;
   $this->client = $client;
 }

 public static function create(ContainerInterface $container) {
   return new static(
     # see https://www.drupal.org/docs/drupal-apis/configuration-api/simple-configuration-api#s-interacting-with-configuration
     $container->get('config.factory'),
     # see  https://www.drupal.org/docs/contributed-modules/http-client-manager
     $container->get('http_client')
   );
 }

 public function showCats(){
   $config = $this->configFactory->getEditable('rw_config.settings');
   $api_url = 'https://api.thecatapi.com/v1/images/search?limit=20&page=1&order=Desc';

   $options = [
     'headers' => [
       'Content-Type' => 'application/json',
       'x-api-key' => $config->get('api_key')
     ]
   ];

   $data = $this->client->request('GET', $api_url, $options);

   $items = Json::decode($data->getBody()->getContents());

   return [
     '#theme' => 'rw_config_listing', # remember template definition in rw_config.module
     '#data' => [ # data to the template file
       'app_title' => $config->get('app_title'),
       'items' => $items,
       'show_pictures' => $config->get('show_pictures'),

     ]
   ];
 }

}

// ConController.php End ------------------------------------------------

<h1> App Name: {{ data['app_title'] }}</h1>
<hr/>
{% for key, item in data['items'] %}
  <div style="width: 300px">
    <hr/>
    <h1> Picture id: {{ item['id'] }}</h1>
    {% if data['show_pictures'] %}

      Show Picture:
      <img src={{ item['url'] }} alt={{ item['url'] }}>
    {% else %}
      <h4> Picture display set to off!!!</h4>
    {% endif %}
  </div>


{% endfor %}