hi Thomas,
thanks for all the details, actually my post was not really clear on
what I have.
the category model looks like this:
class Category(models.Model):
name = models.CharField(max_length=100, unique=True)
slug = models.SlugField(max_length=100, unique=True)
parent = models.ForeignKey('self',blank=True,null=True)
seq = models.IntegerField(default=10)
active = models.BooleanField(default=1)
def __unicode__(self):
return self.name
@models.permalink
def permalink(self):
return "barter.listings.views.category", [self.slug]
---------------
my view looks like this:
def category(request, myslug):
category_list = Category.objects.filter(parent__slug=myslug)
catcrumb_list = Category.objects.filter(slug=myslug)
return render_to_response('listings/browse.html', {
'category_list': category_list,
'catcrumb_list': catcrumb_list,
}
)
and my template looks like this:
{% extends "base.html" %}
{% block content %}
<h2>Browse Categories</h2>
<div class="crumbs">
{% if catcrumb_list %}
{% for crumb in catcrumb_list %}
<a href="{{ category.permalink }}">{{crumb.name }}</a>
{% endfor %}
{% endif %}
</div>
{% if category_list %}
<ul>
{% for category in category_list %}
<li><a href="{{ category.permalink }}">{{category.name }}</
a></li>
{% endfor %}
</ul>
{% else %}
<p>No Categories are available.</p>
{% endif %}
{% endblock %}
currently in this code, catcrumb_list is only populated with the last
parent category, so the nest-parents is what I need.
your example above looks good, I'll give it a try and let you know,
still need to go through your attached trees.py.
One question though, since the array is being built in reverse order
(child to parent), when it comes to looping thru it in the template,
it will be printed in the wrong order, so I guess I need to reverse it
before hand or instead of using append
could I use something like
parents.insert(1, cat_crumb)
thanks again for your help
On Oct 29, 7:25 am, Thomas Guettler <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Does this help you?
>
> myslug=...
> parents=[]
> while myslug:
> cat_crumb=Category.objects.get(slug=myslug) # I guess slug is unique
> parents.append(cat_crumb)
> myslug=cat_crumb.parent
>
> But be careful, you might get infinite loops if the parent links
> to a child. To avoid this you could write an "assert len(parents)<100"
> into the loop.
> Except you have a really deeply nested categories.
>
> BTW, Why is "parent" a slug field and not a foreign key?
>
> I attached my tree mix in.
>
> coderb schrieb:
>
> > sorry, had not finished this post before accidently submitting it...
>
> > for myslug not null
> > catcrumb_list = Category.objects.filter(slug=myslug)
> > myslug = catcrumb_list.parent
>
> > basically, I want to loop through the category model a parent is not
> > found, and each pass, store the model tupel in catcrumblist.
>
> > I tried catcrumb_list.append, but returns read-only error on 'list'
>
> > any help would be apprec-ated.
>
> > thank you
>
> --
> Thomas Guettler,http://www.thomas-guettler.de/
> E-Mail: guettli (*) thomas-guettler + de
>
> tree.py
> 2KViewDownload
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