python - How can I render a tree structure (recursive) using a django template?

Question

I have a tree structure in memory that I would like to render in HTML using a Django template.

class Node():
  name = "node name"
  children = []

There will be some object root that is a Node, and children is a list of Nodes. root will be passed in the content of the template.

I have found this one discussion of how this might be achieved, but the poster suggests this might not be good in a production environment.

Does anybody know of a better way?

Answer 1

Using with template tag, I could do tree/recursive list.

Sample code:

main template: assuming 'all_root_elems' is list of one or more root of tree

<ul>
{%for node in all_root_elems %} 
    {%include "tree_view_template.html" %}
{%endfor%}
</ul>

tree_view_template.html renders the nested ul, li and uses node template variable as below:

<li> {{node.name}}
    {%if node.has_childs %}
        <ul>
         {%for ch in node.all_childs %}
              {%with node=ch template_name="tree_view_template.html" %}
                   {%include template_name%}
              {%endwith%}
         {%endfor%}
         </ul>
    {%endif%}
</li>