Django CMS Multi-Level Dropdown Menu - recursion

Question

Im kinda new to Django CMS and im trying my best to avoid asking, but this one drives me crazy.
I made a Wiki app with a Topic, and Category model. I hooked it to a Site on my CMS and added it to my Menu. Now i would like to be able to show all Top-Level categories, their Child Categories & Topics, and the Child categories of these, and so on, on my menu.
Menu/Navigation should look like this:
Wiki
Category1
Category1.1
Topic
Category1.2
Topic
Category2
Topic
Category3
...
Right now i can only show the Top categories:
Wiki
Category1
Category2
Category3
I Already created a menu.py to get a Custom SubMenu on my Wiki (the one you see above):
menu.py
class WikiSubMenu(CMSAttachMenu):
name = _("Wiki Sub-Menu")
def get_nodes(self, request):
nodes = []
categories = Category.objects.filter(parent_id__isnull=True)
for c in categories:
node = NavigationNode(
mark_safe(c.name),
c.get_absolute_url(),
c.id,
)
nodes.append(node)
return nodes
menu_pool.register_menu(WikiSubMenu)
My Category Model:
class Category(models.Model):
''' Category model. '''
name = models.CharField(max_length=100)
slug = models.SlugField(unique=True)
description = models.TextField(blank=True)
parent = models.ForeignKey(
'self',
null=True,
blank=True,
related_name='children'
)
sort = models.IntegerField(default=0)
class Meta:
ordering = ['sort', 'name']
def __unicode__(self):
return self.name
#models.permalink
def get_absolute_url(self):
return ('topics:categories_category_detail', (), {'slug': self.slug})
def get_all_children(self):
return Category.objects.filter(parent=self)
Now, is it possible to create a Sub-SubMenu, for all Categories with Childs, and their Childs, and their Childs, and so on?
Thanks for help & sorry for bad english
-- EDIT : --
I just found that:
docs.django-cms.org/en/3.0.6/extending_cms/app_integration.html#integration-modifiers
(Removed direct link to add 2 new Links, sorry for that)
I think that is what im looking for, i was kinda blind that i didn't found it. I'll try it out and Post the Answer if it worked out.
-- EDIT (AGAIN): --
The modifier didn't worked for me, but i got a whole piece further,
i read the Docs again, and found that i can give the NavigationNodes an optional attr dictonary, which i filled with all Categories with parent=c, on that way i had the data i needed, then i found that real nice bootstrap dropdown menu, that does exacly what i wanted. So my code until now looks like that:
menu.py
class TopicsSubMenu(CMSAttachMenu):
name = _("Wiki Sub-Menu")
def get_nodes(self, request):
nodes = []
categories = Category.objects.filter(parent_id__isnull=True)
for c in categories:
node = NavigationNode(
mark_safe(c.name),
c.get_absolute_url(),
c.pk,
attr=dict(
subcategories=Category.objects.filter(parent=c),),
)
nodes.append(node)
return nodes
And my Template:
menu.html
{% for child in children %}
<li>
{% if child.children %}
<a class="dropdown-toggle" data-toggle="dropdown" href="#">
{{ child.get_menu_title }}
<span class="caret">
</span>
</a>
<ul class="dropdown-menu multi-level" role="menu" aria-labelledby="dropdownMenu">
{% for child in child.children %}
{% if child.attr.subcategories.count %}
<li class="dropdown-submenu">
<a tabindex="-1" href="#">{{ child.get_menu_title }}</a>
<ul class="dropdown-menu">
{% for subcategory in child.attr.subcategories %}
<li>
<a tabindex="-1" href="{{ subcategory.get_absolute_url }}">{{ subcategory }}</a>
</li>
{% endfor %}
</ul>
</li>
{% else %}
<li>{{ child.get_menu_title }}</li>
{% endif %}
{% endfor %}
</ul>
{% else %}
<a href="{{ child.get_absolute_url }}">
<span>
{{ child.get_menu_title }}
</span>
</a>
{% endif %}
</li>
{% if class and forloop.last and not forloop.parentloop %}
{% endif %}
{% endfor %}
My next step will be to write the whole "for" loops from the template in a Method, make it recursive with a while loop or something and post the result as Answer.
I hope i can help someone with that stuff :)

Answer 1

WOHO! I finally did it!
base.html
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
{% show_menu 0 100 100 100 "menu.html" %}
</ul>
</div>
menu.html:
{% for child in children %}
<li class="child{% if child.selected %} selected{% endif %}{% if child.ancestor %} ancestor{% endif %}{% if child.sibling %} sibling{% endif %}{% if child.descendant %} descendant{% endif %}{% if child.children %} dropdown{% endif %}">
<a {% if child.children %}class="dropdown-toggle" data-toggle="dropdown"{% endif %} href="{{ child.attr.redirect_url|default:child.get_absolute_url }}">
<span>{{ child.get_menu_title }}</span>{% if child.children|length %}<span class="caret"></span>{% endif %}
</a>
{% if child.children %}
<ul class="dropdown-menu multi-level" role="menu" aria-labelledby="dropdownMenu">
{% show_menu from_level to_level extra_inactive extra_active "dropdownmenu.html" "" "" child %}
</ul>
{% endif %}
</li>
{% if class and forloop.last and not forloop.parentloop %}{% endif %}
{% endfor %}
and my dropdownmenu.html:
(The recursive stuff starts here)
{% load i18n menu_tags cache mptt_tags %}
{% for child in children %}
<li {% if child.children %}class="dropdown-submenu"{% else %} {% endif %}>
<a tabindex="-1" href="{{ child.attr.redirect_url|default:child.get_absolute_url }}">{{ child.get_menu_title }}</a>
{% if child.children %}
<ul class="dropdown-menu">
{% show_menu from_level to_level extra_inactive extra_active "dropdownmenu.html" "" "" child %}
</ul>
{% endif %}
</li>
{% endfor %}
and the most important, menu.py:
class TopicsSubMenu(CMSAttachMenu):
name = _("Wiki Sub-Menu")
def get_nodes(self, request):
nodes = []
categories = Category.objects.all()
for c in categories:
node = NavigationNode(
mark_safe(c.name),
c.get_absolute_url(),
c.pk
)
if c.parent:
node.parent_id = c.parent_id
nodes.append(node)
topics = Topic.objects.all().exclude(category__isnull=True)
for t in topics:
node = NavigationNode(
mark_safe(t.title),
t.get_absolute_url(),
t.pk,
t.category.all()[0].id,
parent_namespace="TopicsSubMenu"
)
nodes.append(node)
return nodes
menu_pool.register_menu(TopicsSubMenu)
And thats it!