Django: How to automatically change a field's value at the time mentioned in the same object?

Question

I am working on a django project for racing event in which a table in the database has three fields.

1)Boolean field to know whether race is active or not

2)

Answer 1

You can override the predefined save method like this:

def save(self, *args, **kwargs):
    if start:
        boolean_field = True
        super(YouModel, self).save(*args, **kwargs)
    else:
        boolean_filed = False
        super(YouModel, self).save(*args, **kwargs)