Create Unique Slug Django

I have a problem with creating unique slugs using django models. I want to allow the admin user to change the slug from the edit page in the admin. When a slug already exists there

Solution 1:

Try this. Didn't test it myself. But it should give you the idea.

import re
defsave(self, *args, **kwargs):
    ifnot self.id: # Createifnot self.slug: # slug is blank
            self.slug = slugify(self.page_title)
        else: # slug is not blank
            self.slug = slugify(self.slug)
    else: # Update
        self.slug = slugify(self.slug)

    qsSimilarName = Page.objects.filter(slug__startswith='self.slug')

    if qsSimilarName.count() > 0:
        seqs = []
        for qs in qsSimilarName:
            seq = re.findall(r'{0:s}_(\d+)'.format(self.slug), qs.slug)
            if seq: seqs.append(int(seq[0]))

        if seqs: self.slug = '{0:s}_{1:d}'.format(self.slug, max(seqs)+1)

    super(Page, self).save(*args, **kwargs)

Three problems in your code.

1. The first else means either self.id or self.slug is NOT blank. So if self.id is NOT blank and self.slug is blank, self.slug will not get a value.
2. slug_exits == slug will always be False, because slug_exits is a Model object and slug is a string. This is why you get the error!
3. You did a query in the loop, which may cause lots of hits to the DB.