Generate unique hashes for django models

Question

I want to use unique hashes for each model rather than ids.

I implemented the following function to use it across the board easily.

import random,hashlib         


        

Answer 1

The ugly:

import random

From the documentation:

This module implements pseudo-random number generators for various distributions.

If anything, please use os.urandom

Return a string of n random bytes suitable for cryptographic use.

This is how I use it in my models:

import os
from binascii import hexlify

def _createId():
    return hexlify(os.urandom(16))

class Book(models.Model):
    id_book = models.CharField(max_length=32, primary_key=True, default=_createId)