def validate_email(self, field):
     if User.objects(email=self.email.data):
         raise validators.ValidationError('Duplicate emailaddress')
         return False
     return True
 def get_user(self):
     return User.objects(name=self.name.data).first()
 def validate_name(self, field):
     if User.objects(name=self.name.data):
         raise validators.ValidationError('Duplicate username')
         return False
     return True
 def load_user(user_id):
     return User.objects(id=user_id).first()