Getting a menu delivered via REST

I am trying to get a menu via REST and I’ve created a new module and rest resource plugin that allows for GET on /entity/restmenu/{menu_name}.

I can successfully return this example json using this function when I hit the URL.

public function get(EntityInterface $entity) {   $result = array();   for ($i = 0; $i < 10; $i++) {     $temp = array(       'title' => 'Test ' . $i,       'href' => '#/' . $i     );     array_push($result, $temp);   }   return new ResourceResponse(json_encode($result)); } 

I cannot figure out how to load the menu based on $entity. If I hit my URL ( $entity‘s value is 'main' which is the machine name of the main menu.

I’ve tried using Drupal menu tree, but I am not having luck, and debugging this thing with only JSON responses is quite difficult.

How do I get menu item titles and paths based on the menu machine name?


Ok, sort of figured it out.

public function get($entity) {   $menu_name = $entity;   $menu_parameters = Drupal::menuTree()->getCurrentRouteMenuTreeParameters($menu_name);   $tree = Drupal::menuTree()->load($menu_name, $menu_parameters);   $renderable = Drupal::menuTree()->build($tree);   $result = array();    foreach (end($renderable) as $key => $val) {     $temp = array(       'menu_item' => $val,       'route' => $key     );     array_push($result, $temp);   }   return new ResourceResponse(json_encode($result)); } 

Right now that will output:

[   {     "menu_item":{       "is_expanded":false,       "is_collapsed":false,       "in_active_trail":false,       "attributes":"",       "title":"Home",       "url":{        },       "below":[        ],       "original_link":{        }     },     "route":"standard.front_page"   },   {     "menu_item":{       "is_expanded":false,       "is_collapsed":false,       "in_active_trail":false,       "attributes":"",       "title":"Communities",       "url":{        },       "below":[        ],       "original_link":{        }     },     "route":"menu_link_content:139d0413-dc50-4772-8200-bc6c92571fa7"   } ] 

any idea why url or original_link are empty?

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