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🐛 check if the username begins or ends with a period #368

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🐛 check if the username begins or ends with a period #368

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4 changes: 2 additions & 2 deletions openbook_auth/validators.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,9 +6,9 @@


def username_characters_validator(username):
if not re.match('^[a-zA-Z0-9_.]*$', username):
if not re.match('^(?!\.)[a-zA-Z0-9_.]*(?<!\.)$', username):
raise ValidationError(
_('Usernames can only contain alphanumeric characters, periods and underscores.'),
_('Usernames can only contain alphanumeric characters, periods and underscores. They must not begin or end with a period.'),
)


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