CODEWITHSUNDEEP
pythondjangoprimary-key
Eduardo Satler
Eduardo Satler

Reputation: 41

Django - Create a custom id

I know Django auto generates a ID for my model with a primary_key

And I also know that if I want to generate a custom id I should do:

id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)

But how can I change this so the id would look like this YYYYMMDDXXXXXX ?

Where:

YYYY = year

MM = month

DD = day

XXXXXX = random number

Upvotes: 4

Views: 3658

Answers (1)

Arpit Solanki
Arpit Solanki

Reputation: 9931

I don't see a reason why you should make a id like that but yeah you can do it. Just create a small function to generate id and pass it to your field.

import datetime
from uuid import uuid4
def create_id():
    now = datetime.datetime.now()
    return str(now.year)+str(now.month)+str(now.day)+str(uuid4())[:7]

Then in model field

id = models.CharField(primary_key=True, default=create_id, editable=False)

Remember to pass function object as parameter not a callable.

Upvotes: 2

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