Question

Suppose I have a Django model as follows:

class Person(models.Model):
    first_name = models.CharField(max_length=50)
    last_name = models.CharField(max_length=50)

Somewhere I have an instance p, and I make some changes to it.

p.first_name = 'new first name'

Due to some reason, I wish to revert all the changes I made to this instance. One way I can think of reverting is as follows:

p = Person.objects.get(pk=p.pk)

The above code depends upon the Model class name. Is there any simpler model independent way to do this?

Answer 1

Given an instance p,

p = p.__class__._default_manager.get(pk=p.pk)