Imagine the following model:
class Article(models.Model):
title = models.IntegerField()
Then when you do case 1):
art = Article.objects.get(pk=1)
art.title = "New title"
art.save()
or case 2):
art = Article.objects.get(pk=1)
art.save()
Is there a way that the model, before saving, knows whether the title
(or any other field) has been reassigned? I need to know because for a
datefield I want to use now if no explicit date is given, otherwise
the given date.
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