python - 使用出生日期从 Django 模型中过滤人员

Question

我有这个模型:

class People(models.Model):
    """
    People model
    """
    name = models.CharField(max_length=120)
    birth_date = models.DateField()

我想过滤所有以年龄作为参数的人，例如:

min_age = 24
# Filter people older than  ´min_age´
people = People.objects.filter(birth_date__lte = (#something here to filter with age))

我怎样才能做到这一点？

Answer 1

您必须检查 datetime.date，它是允许的最大出生日期:在该天之后出生的任何人都将小于最小年龄:

from datetime import date

min_age = 24
max_date = date.today()
try:
    max_date = max_date.replace(year=max_date.year - min_age)
except ValueError: # 29th of february and not a leap year
    assert max_date.month == 2 and max_date.day == 29
    max_date = max_date.replace(year=max_date.year - min_age, month=2, day=28)
people = People.objects.filter(birth_date__lte=max_date)