class FormMixin(object):
    def get_errors(self):
        if hasattr(self,'errors'):
            errors = self.errors.get_json_data()
            new_errors = {}
            for key, message_dict in errors.items():
                messages = []
                for message in message_dict:
                    messages.append(message['message'])
                new_errors[key] = messages
            return new_errors
        else:
            return {}