islandora_breadcrumbs.module

<?php

/**
 * @file
 * Primary module hooks for Islandora Breadcrumbs module.
 */

use Drupal\node\NodeInterface;

/**
 * Implements hook_theme().
 */
function islandora_breadcrumbs_theme($existing, $type, $theme, $path) {
  return [
    'islandora_breadcrumb' => [
      'variables' => [
        'links' => [],
      ],
    ],
  ];
}

/**
 * Prepares variables for breadcrumb templates.
 *
 * Adapted from theme.inc/template_preprocess_breadcrumb.
 *
 * @param array $variables
 *   An associative array containing:
 *   - links: A list of \Drupal\Core\Link objects which should be rendered.
 */
function islandora_breadcrumbs_preprocess_islandora_breadcrumb(array &$variables) {
  $variables['breadcrumb'] = [];
  $route_name = \Drupal::routeMatch()->getRouteName();
  if (strpos($route_name, "view.group") === false) {
    /** @var \Drupal\Core\Link $link */
    foreach ($variables['links'] as $key => $links) {
      foreach ($links as $link) {
        $variables['breadcrumb'][$key][] = [
          'text' => $link->getText(),
          'url' => $link->getUrl()->toString(),
        ];
      }
    }
  }
}