ParagraphsFrontendUIAddBelow.php in Paragraphs frontend ui 8.2

Namespace

Drupal\paragraphs_frontend_ui\Form

File

src/Form/ParagraphsFrontendUIAddBelow.php

<?php

namespace Drupal\paragraphs_frontend_ui\Form;

use Drupal\Core\Ajax\CloseModalDialogCommand;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\paragraphs_frontend_ui\Entity\ParagraphSet;
use Drupal\paragraphs\Entity\Paragraph;
use Drupal\Core\Ajax\ReplaceCommand;
use Drupal\Core\Ajax\AjaxResponse;
use Drupal\paragraphs_library\Entity\LibraryItem;

/**
 * Class CleanupUrlAliases.
 *
 * @package Drupal\paragraphs_ui_add_set\Form
 */
class ParagraphsFrontendUIAddBelow extends FormBase {

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

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $paragraph = NULL) {

    // Set the paragraph to the form state.
    $form_state
      ->addBuildInfo('paragraph', $paragraph);

    // Render the sets.
    $sets = \Drupal::entityTypeManager()
      ->getListBuilder('paragraphs_library_item')
      ->load();
    $view_builder = \Drupal::entityTypeManager()
      ->getViewBuilder('paragraphs_library_item');
    if (empty($sets)) {
      $form['empty_text'] = [
        '#type' => 'html_tag',
        '#tag' => 'p',
        '#value' => $this
          ->t('No reusable paragraphs found.'),
      ];
    }
    $form['sets']['#attached']['library'][] = 'paragraphs_frontend_ui/paragraphs_frontend_ui.theme';
    foreach ($sets as $set) {
      $form['sets'][$set
        ->id()] = [
        '#type' => 'container',
        '#attributes' => [
          'class' => [
            'add-paragraph-item',
          ],
        ],
      ];
      $form['sets'][$set
        ->id()]['element'] = $view_builder
        ->view($set);
      $form['sets'][$set
        ->id()]['add_set'] = [
        '#type' => 'button',
        '#name' => $set
          ->id() . '_add_set',
        '#value' => $this
          ->t('Add'),
        '#ajax' => [
          'callback' => [
            $this,
            'addMoreAjax',
          ],
          'effect' => 'fade',
        ],
      ];
    }
    $form['sets']['clearfix'] = [
      '#type' => 'container',
      '#attributes' => [
        'class' => [
          'clearfix',
        ],
      ],
    ];
    $user = \Drupal::currentUser();
    $form['add_set'] = [
      '#type' => 'link',
      '#title' => $this
        ->t('Add a new item'),
      '#url' => Url::fromRoute('entity.paragraphs_library_item.add_form', [
        'destination' => \Drupal::destination()
          ->get(),
      ]),
      '#access' => $user
        ->hasPermission('create paragraph library item'),
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {

    // @todo create an ajax fallback
  }

  /**
   * {@inheritdoc}
   */
  public function addMoreAjax(array $form, FormStateInterface $form_state) {
    $build_info = $form_state
      ->getBuildInfo();
    $triggering_paragraph = $build_info['paragraph'];
    $trigger = $form_state
      ->getTriggeringElement()['#name'];
    $set = substr($trigger, 0, -8);
    if (is_numeric($set)) {
      $set = LibraryItem::load($set);
      $target_id = $set
        ->get('paragraphs')
        ->getValue()[0]['target_id'];
      $set_paragraph = Paragraph::load($target_id);
      $parent = $triggering_paragraph
        ->getParentEntity();
      $parent_type = $parent
        ->getEntityTypeId();
      $parent_bundle = $parent
        ->getType();
      $parent_entity_id = $parent
        ->id();
      $parent_field_name = $triggering_paragraph
        ->get('parent_field_name')
        ->getValue()[0]['value'];
      $paragraph_items = $parent->{$parent_field_name}
        ->getValue();
      $paragraphs_new = [];
      foreach ($paragraph_items as $delta => $paragraph_item) {
        $paragraphs_new[] = $paragraph_item;
        if ($paragraph_item['target_id'] == $triggering_paragraph
          ->id()) {
          $new_paragraph = $set_paragraph
            ->createDuplicate();

          // set the language off the parent
          $langcode = \Drupal::service('language_manager')
            ->getCurrentLanguage()
            ->getId();
          $new_paragraph
            ->set('langcode', $langcode);
          $new_paragraph
            ->save();
          $paragraphs_new[] = [
            'target_id' => $new_paragraph
              ->id(),
            'target_revision_id' => $new_paragraph
              ->getRevisionId(),
          ];
        }
      }
      $parent->{$parent_field_name}
        ->setValue($paragraphs_new);
      $parent
        ->save();
      $identifier = '[data-paragraphs-frontend-ui=' . $parent_field_name . '-' . $parent
        ->id() . ']';
      $response = new AjaxResponse();

      // Refresh the paragraphs field.
      $response
        ->addCommand(new ReplaceCommand($identifier, $parent
        ->get($parent_field_name)
        ->view('default')));
      $response
        ->addCommand(new CloseModalDialogCommand());
      return $response;
    }
  }

}

Classes

Name	Description
ParagraphsFrontendUIAddBelow	Class CleanupUrlAliases.