Get Absolute URL in Django when using Class Based Views

Question

Hello I am migrating my app to use class based views instead of function based views. In my old code I was able to get the absolute URL of an object related to a function view this way:

class Category(models.Model):
    name = models.CharField(max_length=100,unique=True)
    slug = models.SlugField(unique=True)
    description = models.TextField()
    parent = models.ForeignKey('self',null=True,blank=True)

    def get_absolute_url(self):
        return reverse('blog.views.showcategory',args=[str(self.slug)])

I couldn't find what I should change in my get absolute url function in order to get the same result.

This is my new class based view

class CategoryView(ListPosts):
    template_name = "postlist.html"
    context_object_name="posts"
    def get_queryset(self):
         return Post.objects.filter(category__slug=self.kwargs['slug']).order_by('created')

Thanks!

Answer 1

Here is my get_absolute_url configuration:

urls.py

urlpatterns = patterns('',
    url(r'^products/(?P<slug>[\w\d\-\_]+)/$', views.ProductView.as_view(), name='product'),
    )

models.py

def get_absolute_url(self):
    return reverse('products:product', kwargs={'slug':self.slug})

My urls.py is under the "products" app, so the url namespace is "products:product"

Answer 2

You should always give your URLs a name, and refer to that:

url(r'/category/(?P<slug>\w+)/$', CategoryView.as_view(), name='category_view'),

Now:

@models.permalink
def get_absolute_url(self):
    return ('category_view', (), {'slug': self.slug})

Note I've used the permalink decorator, which does the same as calling reverse but is a bit neater.