How to assign a new serial identifier to a user when registering (let's say dogs_id)?

Question

Django

Let's say I have a registration page on a site with the following fields:

- username
- password1
-password2 -email
-dogs_id

I need each new user to be assigned dogs_id +1 from the previous registered user upon registration. How can I do that?

Answer 1

100500 times they wrote that it is not necessary to do this, or it should not be an id