48 lines
1.3 KiB
Python
48 lines
1.3 KiB
Python
from datetime import datetime, timedelta
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from django.core.exceptions import ValidationError
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from django.forms import Form, CharField, EmailField, Textarea, ChoiceField
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from common.forms import CaptchaField
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# this should go in something like redis. I refuse, however, to involve redis
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# in all of this until i have 2-3 more usecases.
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# TODO generalize
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submission_throttle = {}
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def throttle_submission(name):
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last_submission = submission_throttle.get(name)
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now = datetime.now()
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if last_submission is None\
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or now - last_submission > timedelta(minutes=30):
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submission_throttle[name] = datetime.now()
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else:
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raise ValidationError('you have submitted pretty recently. try again in a bit.')
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def validate_msg_text(msg):
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if len(msg) == 0:
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raise ValidationError('message cannot be empty')
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if len(msg) > 500:
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raise ValidationError('too long')
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class GuestbookForm(Form):
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name = CharField(label='name!')
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msg = CharField(
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widget=Textarea,
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label="message!",
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validators=(validate_msg_text,),
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)
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captcha = CaptchaField()
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def clean(self):
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result = super().clean()
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throttle_submission(result['name'])
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if self.errors:
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raise ValidationError('oops, looks like there were some problems below.')
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return result
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