howard_paragraphs.module

<?php

/**
 * @file
 * Howard paragraphs module file.
 */

 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\paragraphs\Entity\Paragraph;

 /**
 * Implements hook_help().
 *
 * @inheritdoc
 */
 function howard_paragraphs_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.howard_paragraphs':
      $text = file_get_contents(dirname(__FILE__) . "/README.md");
      if (!\Drupal::moduleHandler()->moduleExists('markdown')) {
        return '<pre>' . $text . '</pre>';
      }
      else {
        // Use the Markdown filter to render the README.
        $filter_manager = \Drupal::service('plugin.manager.filter');
        $settings = \Drupal::configFactory()->get('markdown.settings')->getRawData();
        $config = ['settings' => $settings];
        $filter = $filter_manager->createInstance('markdown', $config);
        return $filter->process($text, 'en');
      }
  }
  return NULL;
 }

 /**
 * Implements hook_preprocess_paragraph().
 *
 * @param array $variables
 *   An associative array containing:
 *   - elements: An array of elements to display in view mode.
 *   - paragraph: The paragraph object.
 *   - view_mode: View mode; e.g., 'full', 'teaser'...
 */
function howard_paragraphs_preprocess_paragraph(&$variables) {
  /** @var Paragraph $paragraph */
  $paragraph = $variables['paragraph'];
  // Get the parent bundle.
  $parentBundle = $paragraph->getParentEntity()->bundle();
  // Hide/show certain elements based on parent content type.
  $showWrapper = true;
  if( $parentBundle == 'hc_page') {
    $showWrapper = false;
  }
  $variables['hp_show_wrapper'] = $showWrapper;
};


 /**
  * Implements hook_theme().
  * Provides some basic stripped down templates
  */
 function howard_paragraphs_theme($existing, $type, $theme, $path) {
   return [
     'paragraph__default' => [
       'base hook' => 'paragraph',
     ],
     'field__entity_reference_revisions' => [
       'base hook' => 'paragraph',
     ],
   ];
 }