[SOLVED] django uuid or hashid field for primary keys? and how to prefix the generated ids with say "cust

django uuid or hashid field for primary keys? and how to prefix the generated ids with say "cust_"

I am currently using django-shortuuidfield to generate a unique UUID primary key on the Customer model as shown below

class Customer(models.Model):
    customer_id = ShortUUIDField()
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    name = models.CharField(max_length=255, blank=False)

This guarantees that the customer_id field is unique with space and time. However, this generates an id similar to B9fcKdMDHbwKCBoADjbNyA and I want to prefix this with cust_ to make it like this cust_B9fcKdMDHbwKCBoADjbNyA. How do I achieve this without making multiple db calls?

I also looked into django-hashid-field which supports prefixes out of the box but this does not guarantee UUID, and on a larger scale, we may run into unique contain failed issues that are not desirable.

Any thoughts on this? Let me know...

Solution

Probably a stale thread, but I just recently came across this problem myself. I ended up just forking and modifying ShortUUIDField module to include a prefix and suffix optionally. Kind of a hacky job I have to admit, but I thought I'd share for posterity.

https://github.com/nick-fournier/django-customshortuuidfield

use like:

class Business(models.Model):
     id = CustomShortUUIDField(primary_key=True, prefix="biz_")