Symfony2 Twig unlimited child depth

Question

I have a self-joining table where each folder has a parent, and the depth of this is unlimited. One folder can have another folder as a parent, no restriction on the depth.<

Answer 1

This has to be done using recursion. I've never tested it with twig but you could develope a mechanism where you recursively including a template.

So your current template would include itself within the loop until a specific condition is reached. So you need some kind of if clause in your inner loop.

Good luck ;)

Answer 2

You need a separate file rendering options that recursively includes itself:

<select>
    <option value="none">No parent</option>
    {% include 'options.html.twig' with {'folders': folders, 'level': 0} %}
</select>

options.html.twig:

{% for folder in folders %}
    <option value="{{ folder.id }}">
        {% for i in range(0, level) %}&nbsp;{% endfor %}
        {{ folder.name }}
    </option>

    {% include 'options.html.twig' with {'folders': folder.children, 'level': level + 1} %}
{% endfor %}

I wrote this code right here, so don't expect it to be correct, but it should be enough to give you the idea.