How to create a unique slug in Django

I use this snippet for generating unique slug and my typical save method look like below

slug will be Django SlugField with blank=True but enforce slug in save method.

typical save method for Need model might look below

def save(self, **kwargs):    slug_str = "%s %s" % (self.title, self.us_zip)     unique_slugify(self, slug_str)     super(Need, self).save(**kwargs)

and this will generate slug like buy-a-new-bike_Boston-MA-02111 , buy-a-new-bike_Boston-MA-02111-1 and so on. Output might be little different but you can always go through snippet and customize to your needs.

My little code:

def save(self, *args, **kwargs):    strtime = "".join(str(time()).split("."))    string = "%s-%s" % (strtime[7:], self.title)    self.slug = slugify(string)    super(Need, self).save()

If you are thinking of using an app to do it for you, here is one.

https://github.com/un33k/django-uuslug

UUSlug = (``U``nique + ``U``code Slug)Unicode Test Example=====================from uuslug import uuslug as slugifys = "This is a test ---"r = slugify(s)self.assertEquals(r, "this-is-a-test")s = 'C\'est déjà l\'été.'r = slugify(s)self.assertEquals(r, "c-est-deja-l-ete")s = 'Nín hǎo. Wǒ shì zhōng guó rén'r = slugify(s)self.assertEquals(r, "nin-hao-wo-shi-zhong-guo-ren")s = '影師嗎'r = slugify(s)self.assertEquals(r, "ying-shi-ma")Uniqueness Test Example=======================Override your objects save method with something like this (models.py)from django.db import modelsfrom uuslug import uuslug as slugifyclass CoolSlug(models.Model):    name = models.CharField(max_length=100)    slug = models.CharField(max_length=200)    def __unicode__(self):        return self.name    def save(self, *args, **kwargs):        self.slug = slugify(self.name, instance=self)        super(CoolSlug, self).save(*args, **kwargs)Test:=====name = "john"c = CoolSlug.objects.create(name=name)c.save()self.assertEquals(c.slug, name) # slug = "john"c1 = CoolSlug.objects.create(name=name)c1.save()self.assertEquals(c1.slug, name+"-1") # slug = "john-1"