Id field in Model Django

Ofcourse, you can.

city_id = models.BigIntegerField(primary_key=True)

By default, Django gives each model the following field:

id = models.AutoField(primary_key=True)

This is an auto-incrementing primary key.

So for your case is:

city_id = models.AutoField(primary_key=True)

The answer is YES,

Something like this:

city_id = models.PositiveIntegerField(primary_key=True)

Here, you are overriding the id. Documentation here

If you’d like to specify a custom primary key, just specify primary_key=True on one of your fields. If Django sees you’ve explicitly set Field.primary_key, it won’t add the automatic id column.

Alternatively, You can always define a model property and use that . Example

class City(models.Model)
    #attributes
    @property
    def city_id(self):
        return self.id

and access it as city.city_id where you would normally do city.id

city_id = models.AutoField(primary_key=True)