def _validate_username(username):
"""Validate the username.
Arguments:
username (unicode): The proposed username.
Returns:
None
Raises:
errors.AccountUsernameInvalid
"""
try:
_validate_unicode(username)
_validate_type(username, six.string_types,
accounts.USERNAME_BAD_TYPE_MSG)
_validate_length(username, accounts.USERNAME_MIN_LENGTH,
accounts.USERNAME_MAX_LENGTH,
accounts.USERNAME_BAD_LENGTH_MSG)
with override_language('en'):
# `validate_username` provides a proper localized message, however the API needs only the English
# message by convention.
validate_username(username)
except (UnicodeError, errors.AccountDataBadType,
errors.AccountDataBadLength) as username_err:
raise errors.AccountUsernameInvalid(text_type(username_err))
except ValidationError as validation_err:
raise errors.AccountUsernameInvalid(validation_err.message)
def perform_username_updates(self, username_update_list):
updated = []
not_found = []
failed = []
for username_update_dict in username_update_list:
old_username = username_update_dict["old_username"]
new_username = username_update_dict["new_username"]
try:
validate_username(new_username)
with transaction.atomic():
update_count = User.objects.filter(
username=old_username).update(username=new_username)
if update_count > 0:
UserSocialAuth.objects.filter(uid=old_username).update(
uid=new_username)
except Exception as exc:
failed.append({
"old_username": old_username,
"new_username": new_username,
"exception": str(exc)
})
else:
if update_count == 0:
not_found.append(username_update_dict)
else:
updated.append(username_update_dict)
return {"updated": updated, "failed": failed, "not_found": not_found}
def clean_username(self):
"""
Validate a string of comma-separated usernames and return a list of usernames.
"""
usernames_csv_string = self.cleaned_data.get('username')
if usernames_csv_string:
usernames = usernames_csv_string.split(',')
if len(usernames) > self.MAX_USERNAME_COUNT:
raise ValidationError(
u"Too many usernames in a single request - {}. A maximum of {} is allowed".format(
len(usernames),
self.MAX_USERNAME_COUNT,
)
)
for username in usernames:
validate_username(username)
return usernames
return usernames_csv_string