如何设置Django Model DateField的边界？

In my model:

在我的模型中：

birth_date = models.DateField(verbose_name='D.O.B')

How can I set bounds for this, such as:

如何为此设置界限，例如：

01-01-1990 to (current date - 18 years)

I'm assuming there's a way to set this in the model so it's included by default in forms, but I've never used dates in a project before, so I'm not sure how this is done.

我假设有一种方法可以在模型中设置它，所以它默认包含在表单中，但我之前从未在项目中使用过日期，所以我不确定这是怎么做的。

It would be useful to know how to do this with DateTimeField and TimeField if it isn't the same.

如果它不相同，知道如何使用DateTimeField和TimeField这将是有用的。

Thanks!

谢谢！

1 个解决方案

#1

DateTimeField and TimeField do not have options to set lower and upper bounds. However, it is possible to write validators for any type of field.

DateTimeField和TimeField没有设置下限和上限的选项。但是，可以为任何类型的字段编写验证器。

A validator to check the date of birth would look something like:

检查出生日期的验证员将类似于：

from datetime import date
from django.core.exceptions import ValidatonError

def validate_dob(value):
    """Makes sure that date is been 1990-01-01 and 18 years ago."""
    today = date.today()
    eighteen_years_ago = today.replace(year=today.year - 18)
    if not date(1990, 1, 1) <= value <= eighteen_years_ago:
        raise ValidationError("Date must be between %s and %s" % (date(1990,1,1,), eighteen_years_ago)

Then use your validator in your model field.

然后在模型字段中使用验证器。

birth_date = models.DateField(verbose_name='D.O.B', validators=[validate_dob])

#1