Rendering a breadcrumb with menu in Twig

[Stefan]

Hi,

I am trying the render the following in twig and I wanted to get some feedback on what would make most sense.

A breadcrumb needs to be rendered and the last item (current) is a dropdown toggle which opens a list of the parents children.

What I do right now is render a custom breadcrumb and call a knp menu at the end item but it maybe the cleaner to do this all in one template? Does anyone have any recommendations of how I could do this in one template?

The menu tree:

Root
  |- Item 1
     |- SubItem 1
     |- SubItem 2
        |- 2ndSubItem 1
        |- 2ndSubItem 2
     |- SubItem 3   
  |- Item 2
  |- Item 3
  |- Item 4

Output (when at SubItem 1):

<ol class="breadcrumb">
    <li><a href="#">Item 1</a></li>
    <li>
        <a href="#" class="dropdownopenclose">SubItem 1</a>
        <ul class="dropdownmenu">
            <li><a href="#" class="active">Item 1</a></li>
            <li><a href="#">Item 2</a></li>
            <li><a href="#">Item 3</a></li>
            <li><a href="#">Item 4</a></li>
        </ul>
    </li>
</ol>

Output (when at 2ndSubItem 1):

<ol class="breadcrumb">
    <li><a href="#">Item 1</a></li>
    <li><a href="#">SubItem 2</a></li>
    <li>
        <a href="#" class="dropdownopenclose">2ndSubItem 1</a>
        <ul class="dropdownmenu">
            <li><a href="#">SubItem 1</a></li>
            <li><a href="#" class="active">SubItem 2</a></li>
            <li><a href="#">SubItem 3</a></li>
        </ul>
    </li>
</ol>