Question

How can I update the ‘City’ dropdown based on the selected ‘Country’? Is there anything built on Django to facilitate this?

class Country(models.Model):
    name            = models.CharField(max_length=50)
    ...

class City(models.Model):
    name         = models.CharField(max_length=50)
    country      = models.ForeignKey(Country)

class UserProfile(models.Model):
    ...
    country             = models.ForeignKey(Country, default=1)
    city                = models.ForeignKey(City, default=1)
    user                = models.OneToOneField(User)

And in my view I have:

{{ profile_form.country }}
{{ profile_form.city }}

But all cities are shown at once.

Please advise.

Answer 1

My answer would be a bit long, so i suggest you can have a look at this implementation, which answers exactly what you are looking for.