Is there an easy way to populate SlugField from CharField?

Question

class Foo(models.Model):
    title = models.CharField(max_length=20)
    slug = models.SlugField()

Is there a built-in way to get the slug field to autopopulate based on the title? Perhaps in the Admin and outside of the Admin.

Answer 1

For pre-1.0:

slug = models.SlugField(prepopulate_from=('title',))

should work just fine

For 1.0, use camflan's

Answer 2

for Admin in 1.0, you'd need to use

prepopulated_fields = {'slug':('title',),}

in your admin.py

Your key in the prepopulated_fields dictionary is the field you want filled, and the value is a tuple of fields you want concatenated.

Outside of admin, you can use the slugify function in your views. In templates, you can use the |slugify filter.

Answer 3

Outside the admin, see this django snippet. Put it in your .save(), and it'll work with objects created programmatically. Inside the admin, as the others have said, use prepopulated_fields.

Answer 4

You can also use pre_save django signal to populate slug outside of django admin code. See Django signals documentation.

Ajax slug uniqueness validation will be useful too, see As-You-Type Slug Uniqueness Validation @ Irrational Exuberance