stupid questions, how I can rewrite my code in haml?

```
<% for role in Role.find(:all) %>
<div>
  <%= check_box_tag "user[role_ids][]", role.id, @user.roles.include?(role) %>
  <%= role.name %>
</div>

```

And where I can found haml examples, like <http://apidock.com/rails/ActionView/Helpers/FormTagHelper/check_box_tag>
Thanks!