Issue #2981359 by amcgowanca, Coufu: Get coffee.get_data route path and send it via drupalSettings

coffee.module

@@ -41,8 +41,12 @@ function coffee_page_attachments(array &$attachments) {
     $cache_tags = isset($attachments['#cache']['tags']) ? $attachments['#cache']['tags'] : [];
     $attachments['#cache']['tags'] = Cache::mergeTags($cache_tags, $config->getCacheTags());
 
+    $data_path = Url::fromRoute('coffee.get_data')->toString();
+    $data_path = ltrim($data_path, '/');
+
     $attachments['#attached']['library'][] = 'coffee/drupal.coffee';
     $attachments['#attached']['drupalSettings']['coffee'] = [
+      'dataPath' => $data_path,
       'maxResults' => $config->get('max_results'),
     ];
   }

js/coffee.js

@@ -73,8 +73,9 @@
 
         var autocomplete_data_element = 'ui-autocomplete';
 
+        var urlPath = drupalSettings.coffee.dataPath || 'admin/coffee/get-data';
         $.ajax({
-          url: Drupal.url('admin/coffee/get-data'),
+          url: Drupal.url(urlPath),
           dataType: 'json',
           success: function (data) {
             DrupalCoffee.dataset = data;