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Python Django Forms Forms Create a Validator

Aidan Taylor-Lynch
Aidan Taylor-Lynch
7,630 Points
Posted by Aidan Taylor-Lynch
Aidan Taylor-Lynch
7,630 Points

How to create custom validator

Im certain this should work, what am i doing wrong?

myproject/forms.py 
from django import forms
from django.core import validators

def not_treehouse(value):
    if value.lower() in '@teamtreehouse.com':
        raise ValidationError('Bot!')

class LeadShareForm(forms.Form):
    email = forms.EmailField(validators=[not_treehouse])
    link = forms.URLField()
    honeypot = forms.CharField(widget=forms.HiddenInput, required=False)

    def clean_honeypot(self):
        honey = self.cleaned_data['honeypot']
        if len(honey):
            raise forms.ValidationError('Bad robot!')
        return honey

1 Answer

jacinator
jacinator
11,936 Points
jacinator
jacinator
11,936 Points

You are just a couple lines off.

from django import forms
from django.core import validators

def not_treehouse(value):
    if '@teamtreehouse.com' in value.lower():  # You're looking for teamtreehouse in email, not email in teamtreehouse
        raise forms.ValidationError('Bad robot!')  # Raise forms.ValidationError, not ValidationError

class LeadShareForm(forms.Form):
    email = forms.EmailField(validators=[not_treehouse])
    link = forms.URLField()
    honeypot = forms.CharField(widget=forms.HiddenInput, required=False)

    def clean_honeypot(self):
        honey = self.cleaned_data['honeypot']
        if len(honey):
            raise forms.ValidationError('Bad robot!')
        return honey