degov-8.x-2.0/modules/degov_media_address/degov_media_address.module

<?php

use Drupal\degov_common\Common;

/**
 * Implements hook_preprocess().
 */
function degov_media_address_preprocess(&$variables, $hook, &$info) {
  // Add template suggestions and libraries implemented in this module.
  Common::addThemeSuggestions($variables, $hook, $info, [
    'module_name' => 'degov_media_address',
    'entity_type' => 'media',
    'entity_bundles' => ['address'],
    'entity_view_modes' => ['default_map', 'osm_map', 'usage', 'preview', 'search', 'embedded'],
  ]);
}

/**
 * Preprocess address media entity.
 */
function degov_media_address_preprocess_media__address(&$variables) {
  if (!empty($variables['elements']['#view_mode'])
    && ($variables['elements']['#view_mode'] == 'osm_map' )) {
    $address = $variables['elements']['#media'];
    if ($address instanceof \Drupal\media\MediaInterface) {
      $location = $address->get('field_address_location');
      if (!$location->isEmpty()) {
        // Assign the unique ID for every map paragraph we have.
        $map_id = uniqid('map-');
        $variables['content']['map_id'] = $map_id;
        // Further settings for the different maps.
        if ($variables['elements']['#view_mode'] == 'osm_map') {
          // Add latitude and longitude.
          $variables['#attached']['drupalSettings']['maps'][$map_id]['lat'] = $location->lat;
          $variables['#attached']['drupalSettings']['maps'][$map_id]['lon'] = $location->lon;
          // Add pin image location.
          $variables['#attached']['drupalSettings']['maps'][$map_id]['pin'] = '/' . drupal_get_path('module', 'degov_media_address')
            . '/images/map-icon.png';
          $variables['#attached']['drupalSettings']['maps'][$map_id]['type'] = 'leaflet';
        }
      }
    }
  }
}

/**
 * Implements hook_preprocess_HOOK().
 */
function degov_media_address_preprocess_paragraph__map(&$variables) {
  // Pass map arguments for the rendered map through javascript.
  /** @var \Drupal\paragraphs\ParagraphInterface $paragraph */
  $paragraph = $variables['paragraph'];
  if ($paragraph->hasField('field_map_address_reference')
    && !$paragraph->get('field_map_address_reference')->isEmpty()
  ) {
    $address_reference = $paragraph->get('field_map_address_reference')->entity;
    if (!empty($address_reference)) {
      $location = $address_reference->get('field_address_location');
      if (!$location->isEmpty()) {
        $variables['elements']['#cache']['contexts'][] = 'url.path';
        $variables['elements']['#cache']['tags'][] = 'paragraph:' . $paragraph->id();
        $variables['elements']['#cache']['tags'][] = $paragraph->getEntityTypeId() . '_view';
        $parentEntity = $paragraph->getParentEntity();
        if ($parentEntity && $parentEntity instanceof \Drupal\Core\Entity\ContentEntityInterface) {
          $variables['elements']['#cache']['tags'][] = $parentEntity
              ->getEntityTypeId() . ':' . $parentEntity->id();
          $variables['elements']['#cache']['tags'][] = $parentEntity
              ->getEntityTypeId() . '_view';
        }
        if (empty($variables['#cache']['tags'])) {
          $variables['#cache']['tags'] = [];
        }
        $variables['#cache']['tags'] = $variables['#cache']['tags'] + $variables['elements']['#cache']['tags'];
        // Override map rendering based on view mode selection.
        if (!empty($variables['content']['field_map_address_reference'][0]['#view_mode'])
          && !$variables['paragraph']->get('field_map_address_view_mode')
            ->isEmpty()
        ) {
          $variables['content']['field_map_address_reference'][0]['#cache']['contexts'][] = 'url.path';
          $variables['content']['field_map_address_reference'][0]['#view_mode'] = $paragraph->field_map_address_view_mode->value;
          $variables['content']['field_map_address_reference'][0]['#cache']['tags'] = $variables['content']['field_map_address_reference'][0]['#cache']['tags'] + $variables['elements']['#cache']['tags'];
          $variables['content']['field_map_address_reference']['#cache']['tags'] = $variables['content']['field_map_address_reference']['#cache']['tags'] + $variables['elements']['#cache']['tags'];
        }
      }
    }
  }
}