def validate(self):
if not Form.validate(self):
return False
if self.nickname.data == self.original_nickname:
return True
if self.nickname.data != User.make_valid_nickname(self.nickname.data):
self.nickname.errors.append(gettest('This nickname has invalid characters. Please choose letters, numbers, dots and underscores only.'))
return False
user = User.query.filter_by(nickname=self.nickname.data).first()
if user != None:
self.nickname.errors.append(gettext('This nickname is already in use. Please choose another one.'))
return False
return True
