Django custom field validator vs. clean

Question

I would like to create TodayOrLaterDateField() which would subclass DateField() field as I am using this condition in many places. The purpose of this field would be avoiding pu

Answer 1

You can extend models.DateField and override to_python method. Didn't tested on Django 1.3 but should work.

import datetime
from django.core import exceptions
from django.db import models

class TodayOrLaterDateField(models.DateField):
    def to_python(self, value):
        value = super(TodayOrLaterDateField, self).to_python(value)
        if value < datetime.date.today():
            raise exceptions.ValidationError(u'Date must be today or later')
        return value