model charfield validators
Date: May 10th 2016
Last updated: May 10th 2016
Model validators (also called form validators) check that a model field contains an appropriate pattern before a form can be submitted. I was looking for a way to make sure that a form was submitted using a pattern like 6'6" or 18 5/8". I was able to get this done using RegexValidator.
validators.py (new file in app directory)
from django.core.validators import RegexValidator board_length_validator = RegexValidator(r'^[0-9+]\'[0-9+]\"$', message='Enter a valid board length e.g. 6\'6\"', code='Invalid name')
from .validators import board_length_validator class Board(models.Model): # <- snipped -> boardlength = models.CharField('Length', # add model validator here! validators=[board_length_validator], max_length=6, null=True, blank=True) # <- snipped ->