django1/tests/cache/models.py

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)