How to do age validation?

Question

Django

How to validate the age field so that the date of birth is no more than the current one (it cannot be tomorrow or a month ahead), and the age in total is not older than 120 years?

Answer 1

Based on the documentation :

from datetime import timedelta
from django.db import models
from django.core.exceptions import ValidationError
from django.utils import timezone


class Person(models.Model):
    dob = models.DateField('Дата рождения')

    def clean_fields(self, exclude=None):
        super().clean_fields(exclude=exclude)

        now = timezone.now()
        if self.dob > (now - timedelta(days=30)):
            raise ValidationError('Рано ещё заносить в базу')
        if (now.year - self.dob.year) > 120:
            raise ValidationError('Поздно уже заносить в базу')