mirror of https://github.com/django/django.git
14 lines
367 B
Python
14 lines
367 B
Python
from django.db import models
|
|
from django.utils import timezone
|
|
|
|
|
|
def expensive_calculation():
|
|
expensive_calculation.num_runs += 1
|
|
return timezone.now()
|
|
|
|
|
|
class Poll(models.Model):
|
|
question = models.CharField(max_length=200)
|
|
answer = models.CharField(max_length=200)
|
|
pub_date = models.DateTimeField("date published", default=expensive_calculation)
|