Django Random ID Model

This module provides a base class for Django models that gives them a random primary key id.

For example, this is the vanilla way to do primary keys:

from django.db import models

class Customer(models.Model):
    name = models.CharField(max_length=50)

customer1 = Customer.objects.create(name="John")
customer2 = Customer.objects.create(name="Jane")
print(customer1.id) # '1'
print(customer2.id) # '2'

The primary key just auto increments.

Now use RandomIDModel:

from django.db import models
from django_random_id_model import RandomIDModel

class Customer(RandomIDModel):
    name = models.CharField(max_length=50)

customer1 = Customer.objects.create(name="John")
customer2 = Customer.objects.create(name="Jane")
print(customer1.id) # '725393588906066'
print(customer2.id) # '905529381860540'

The ID is guaranteed to be unique.

By default the ID will be 12 digits long, but you can override this in settings.py with the ID_DIGITS_LENGTH setting.

RandomIDModel inherits directly from models.Model and does not interfere with anything else, so you can use it wherever you would use models.Model.

Forms and Admin

To integrate your model with a Django ModelForm, you will need to manually exclude the id field:

from django.forms import ModelForm

class CustomerForm(ModelForm):

    class Meta:
        model = Customer
        exclude = ["id"]

Likewise if you use the Django Admin app:

from django.contrib import admin

class CustomerAdmin(admin.ModelAdmin):
    exclude = ["id"]

admin.site.register(Customer, CustomerAdmin)