Unique model field in Django and case sensitivity (postgres)

Question

Consider the following situation: -

Suppose my app allows users to create the states / provinces in their country. Just for clarity, we are considering only ASCII ch

Answer 1

Explicit steps for Mayuresh's answer:

1. in postgres do: CREATE EXTENSION citext;

2. in your models.py add:

   from django.db.models import fields
   
   class CaseInsensitiveTextField(fields.TextField):
       def db_type(self, connection):
           return "citext"
   

   reference: https://github.com/zacharyvoase/django-postgres/blob/master/django_postgres/citext.py

3. in your model use: name = CaseInsensitiveTextField(unique=True)