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

Besides already mentioned option to override save, you can simply store all text in lower case in database and capitalize them on displaying.

class State(models.Model):
    name = models.CharField(max_length=50, unique=True)

    def save(self, force_insert=False, force_update=False):
        self.name = self.name.lower()
        super(State, self).save(force_insert, force_update)