How to create a unique slug in Django

Question

I am trying to create a unique slug in Django so that I can access a post via a url like this: http://www.example.com/buy-a-new-bike_Boston-MA-02111_2

The relevant m

Answer 1

This is a simple implementation that generate the slug from the title, it doesn't depend on other snippets:

from django.template.defaultfilters import slugify

class Article(models.Model):
    ...
    def save(self, **kwargs):
        if not self.slug:
            slug = slugify(self.title)
            while True:
                try:
                    article = Article.objects.get(slug=slug)
                    if article == self:
                        self.slug = slug
                        break
                    else:
                        slug = slug + '-'
                except:
                    self.slug = slug
                    break

        super(Article, self).save()