43 lines
1.6 KiB
Python
43 lines
1.6 KiB
Python
from django.utils.translation import ugettext_lazy as _
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from registration.forms import RegistrationForm
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from django.contrib.auth.models import User
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from django import forms
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class SniptRegistrationForm(RegistrationForm):
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"""
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Subclass of ``RegistrationForm`` which enforces uniqueness of
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email addresses and further restricts usernames.
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"""
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def clean_username(self):
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"""
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Validate that the username is alphanumeric and is not already
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in use.
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"""
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existing = User.objects.filter(
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username__iexact=self.cleaned_data['username'])
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if existing.exists():
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raise forms.ValidationError(
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_("A user with that username already exists."))
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elif '@' in self.cleaned_data['username']:
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raise forms.ValidationError(_("Cannot have '@' in username."))
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elif '.' in self.cleaned_data['username']:
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raise forms.ValidationError(_("Cannot have '.' in username."))
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elif '+' in self.cleaned_data['username']:
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raise forms.ValidationError(_("Cannot have '+' in username."))
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else:
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return self.cleaned_data['username']
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def clean_email(self):
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"""
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Validate that the supplied email address is unique for the
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site.
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"""
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if User.objects.filter(email__iexact=self.cleaned_data['email']):
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raise forms.ValidationError(
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_("""This email address is already in use. Please supply a
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different email address."""))
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return self.cleaned_data['email']
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