Add Menu Classes to Menu

README.md

@@ -118,6 +118,8 @@ function generate()
     $this->menu->add('Edit Myself', 'route:users.edit|id:5');   // Method 5
     $this->menu->add('Logout')->route('auth.logout');           // Method 6
     $this->menu->add('Some Other Link', ['url' => '/link']);    // Method 7
+    $this->menu->add('Sub Menu', 'menu:menu_name);          // Method 8
+    $this->menu->add('Sub Menu', 'sub-menu:sub_menu_name);          // Method 9
 
 }
 ```
@@ -131,6 +133,8 @@ function generate()
 | 5             | The `$this->menu` instance | The route is associated with arguments, useful to create a quick route with parameters.                                                                          |
 | 6             | A new `MenuItem`           | The route is assigned using the fluent interface, which makes the code look cleaner. You can also add an array of route parameters as the second argument.       |
 | 7             | The `$this->menu` instance | You can pass an array as the second argument to immediately issue all the variables to the menu item, when you don't want to use the fluent interface.           |
+| 8             | The `$this->menu` instance | You can pass the name of another menu and the class will merge that menu with this menu.           |
+| 9             | The `$this->menu` instance | You can pass the name of another menu and the class will pull in that menu as a sub menu.           |
 
 
 
@@ -285,4 +289,4 @@ This should achieve a menu looking like [the default bootstrap navbar](https://g
 
 
 # Tips
-- The `__construct` of your menu class works with dependency injection. Simply type hint the stuff you need in the parameter list and we'll ask Laravel to inject the stuff you need.
+- The `__construct` of your menu class works with dependency injection. Simply type hint the stuff you need in the parameter list and we'll ask Laravel to inject the stuff you need.

src/CreatesMenuItems.php

@@ -93,11 +93,33 @@ public function &add(string $title, $config = null)
 
             return $this;
         }
+
+
+		// Is it another Menu?
+		if(starts_with($config, 'menu:') || starts_with($config, 'sub-menu:')) {
+			$slug = $item['__slug__'] = snake_case($title);
+
+			if(starts_with($config, 'menu:')) {
+				$items =& $this->_items;
+				$menu = app('menu')->get(str_replace_first('menu:', '', $config));
+			} else {// if(starts_with($config, 'sub-menu:')) {
+				$items =& $item->_items;
+				$menu = app('menu')->get(str_replace_first('sub-menu:', '', $config));
+			}
+
+			$items = array_merge($items, $menu->_items);
+
+			if(starts_with($config, 'sub-menu:')) {
+				$this->_items[$slug] = &$item;
+			}
+
+			return $this;
+		}
 
         // Else it's a plain url
         $this->_items[snake_case($title)] = &$item;
         $item->url = $config;
 
         return $this;
     }
-}
+}