How to create multiple dropdown of all my model

Question

how to create an alphanumeric that picks first initial letter of model name and generate for every user that signup

firstname = models.CharField(max_length=20)
lastname = models.CharField(max_length=20)

i want to create something like this

firstname = Seung
lastname = Jo
this will be the alphanumeric generated = SJ000001

Answer 1

you can only use javascript library to do the autogeneration of alphanumeric