tildetown-admin/ttadmin/common/forms.py

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from datetime import datetime, timedelta
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from random import shuffle
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from django.core.exceptions import ValidationError
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from django.forms import ChoiceField
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CAPTCHA_CHOICES = [('number', 'zorp borp'),
('hey', 'quop bop'),
('never', 'NO, I AM NOT A ROBOT'),
('eleven', 'crackle zop'),
('twelve', '*rusty screech*'),
('eighty', 'mother, give me legs')]
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shuffle(CAPTCHA_CHOICES)
CAPTCHA_CHOICES.insert(0, ('one', 'beep boop'),)
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NOT_A_ROBOT = 'never'
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def validate_captcha(captcha):
if captcha != NOT_A_ROBOT:
raise ValidationError('Are you sure you are not a robot?')
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class CaptchaField(ChoiceField):
def __init__(self):
super().__init__(choices=CAPTCHA_CHOICES,
label='are you a robot?',
help_text='pick the response that indicates whether or not you are a robot.',
validators=(validate_captcha,))
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# this should go in something like redis. I refuse, however, to involve redis
# in all of this until i have 2-3 more usecases.
def throttler(cache):
def throttle(key):
nonlocal cache
last_submission = cache.get(key)
now = datetime.now()
if last_submission is None\
or now - last_submission > timedelta(minutes=30):
cache[key] = now
else:
raise ValidationError('you have submitted pretty recently. try again in a bit.')
return throttle