Question

I’m getting this error: invalid literal for int() with base 10: 'social' when I try to open a page at /category/social/.

def all_partners(request,category):
    p = Content.objects.filter(category_id=category)
    return render_to_response('reserve/templates/category.html', {'p':p},
        context_instance=RequestContext(request))


class ContentCategory(models.Model):
    content_category = models.CharField('User-friendly name', max_length =  200)
    def __unicode__(self):
        return self.content_category

class Content(models.Model):
    category = models.ForeignKey(ContentCategory)
    external = models.CharField('User-friendly name', max_length =  200, null=True, blank=True)
    host = models.CharField('Video host', max_length = 200, null=True, blank=True)
    slug = models.CharField('slug', max_length = 200, null=True, blank=True)
    def __unicode__(self):
        return self.slug

url(r'^category/(?P<category>[-\w]+)/$', 'all_partners'),

Any ideas on how to fix this? I think the error is in the "p = Content..." line.

Answer 1

Within your view, category has to be an integer, or a string which can be casted to an int like int('5'). You must be going to a url which does not restrict the category to be an integer:

foosite.com/category/social/

So if the last part of the url maps to the category parameter, then within the view, within the query, it tries to cast social to an integer, which raises an error.

To solve it you either have to restring the url pattern to only allow numbers or change how the query is done.

# urls.py
url(r'^category/(?P<category>\d+)/$', 'all_partners'),

or

def all_partners(request,category):
    p = Content.objects.filter(category__content_category=category)
    return render_to_response('reserve/templates/category.html', {'p':p},
        context_instance=RequestContext(request))

which will then lookup the categories by the name, not by the id.