Hello!

So i have these Databoject

class DishCategory extends DataObject {
	private static $has_many = [
		'Dishes' => 'Dish'
	];
}

class Dish extends DataObject {	
	private static $has_one = [
		'DishCategory' => 'DishCategory'
	];
}

<% loop $DishCategory %>
	$Title
	<% loop $Dishes %>
		$Title
	<% end_loop %>
<% end_loop %>

   Category 1
     Dish 1.1
     Dish 1.2
     Dish 1.3
   Category 2
     Dish 2.1
     Dish 2.2
     Dish 2.3
...

corr: sorry this actually works... the problem was a mistake i did in my code so... nvm ^^
Bye