I have a model:
class MyModel(models.Model):
start = models.DateTimeField
(auto_now_add=True)
days_difference = models.IntegerField()
end = models.DateTimeField()
And then I made a form from the model::
class MyForm(forms.ModelForm):
Meta:
model = MyModel
fields = ('days_difference')
Basically I take a user input of number of days (say N), and I want to
calculate the datetime of N days from now.
So I do this in my view:
if form.is_valid():
object = form.save(commit=False)
delta = datetime.timedelta(days=object.days_difference)
object.end = object.start + delta
object.save()
But I got the error:
type object 'datetime.datetime' has no attribute 'timedelta'
What did I do wrong? I thought datetime.timedelta represents the
difference between 2 datetime.datetime instances.
object.start is a datetime.datetime instance
object.end is also a datetime.datetime instance
delta is a datetime.timedelta instance.
So shouldn't I be able to add delta to object.start to arrive at
object.end?
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