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> 

Answer 2

I'm too late.
All of you use so much unnecessary with tags, this is how I do recursive:

In the "main" template:

<!-- lets say that menu_list is already defined --> <ul>     {% include "menu.html" %} </ul> 

Then in menu.html:

{% for menu in menu_list %}     <li>         {{ menu.name }}         {% if menu.submenus|length %}             <ul>                 {% include "menu.html" with menu_list=menu.submenus %}             </ul>         {% endif %}     </li> {% endfor %}