PageSpecificClassSettingsForm.php in Page Specific Class 8

Namespace

Drupal\page_specific_class\Form

File

src/Form/PageSpecificClassSettingsForm.php

<?php

namespace Drupal\page_specific_class\Form;

use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Configure custom settings for Page Specific Class.
 */
class PageSpecificClassSettingsForm extends ConfigFormBase {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'page_specific_class_settings_form';
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'page_specific_class.settings',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $config = $this
      ->config('page_specific_class.settings');
    $description = $this
      ->t('Mention path of pages where you want to add class in body tag.');
    $description .= '<ul>';
    $description .= '<li>' . $this
      ->t('An example <b>path is /hello-world</b> and you want to <b>add class "xyz"</b> on body tag of this page then enter  <b>/hello-world|xyz</b> in text-area') . '</li>';
    $description .= '<li>' . $this
      ->t('An example <b>path is /page-example</b> and you want to <b>add multiple classes like "xyz1 xyz2 xyz3"</b> on body tag of this page then enter  <b>/hello-world|xyz1 xyz2 xyz3</b> in text-area') . '</li>';
    $description .= '<li>' . $this
      ->t('If you want to <b>add class "home-page"</b> in <b>home page</b> body tag then enter  <b>/&lt;front&gt;|home-page</b>') . '</li>';
    $description .= '<li>' . $this
      ->t('To <b>add class "all-page"</b> in <b>each page</b> body tag then enter <b>/*|all-page</b>') . '</li>';
    $description .= '<li>' . $this
      ->t('Enter <b>one path</b> along with class <b>per line</b>') . '</li>';
    $description .= '<li>' . $this
      ->t('Path should <b>start with "/"</b> as well as path and class should <b>seperated with "|".</b>') . '</li>';
    $description .= '</ul>';
    $form['url_with_class'] = [
      '#type' => 'textarea',
      '#title' => $this
        ->t('Enter url along with class "|" seperated and path should start with "/"'),
      '#description' => $description,
      '#rows' => 10,
      '#default_value' => $config
        ->get('url_with_class'),
    ];
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    $enteredArr = explode(PHP_EOL, $form_state
      ->getValue('url_with_class'));
    foreach ($enteredArr as $values) {
      $urlWithClassArr = explode("|", $values);
      $url = $urlWithClassArr[0];
      if ($url[0] !== '/') {
        $form_state
          ->setErrorByName('url_with_class', $this
          ->t("@url path needs to start with a slash.", [
          '@url' => $url,
        ]));
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $urlWithClass = $form_state
      ->getValue('url_with_class');
    $config = $this
      ->config('page_specific_class.settings');
    $config
      ->set('url_with_class', $urlWithClass);
    $config
      ->save();
    parent::submitForm($form, $form_state);
  }

}

Classes

Name	Description
PageSpecificClassSettingsForm	Configure custom settings for Page Specific Class.