serializer.py 文件源码

def serialize_model(self):
        """
        Check the fields of models and convert the data

        Returns: Dictionary
        """
        if not hasattr(self.model, '__dict__'):
            raise TypeError("Models or Dictionary is required")
        response = {}
        opts = self.model._meta
        for field in opts.local_fields:
            # for a django model, retrieving a foreignkey field
            # will fail when the field value isn't set
            try:
                value = getattr(self.model, field.name)
            except ObjectDoesNotExist:
                value = None
            if isinstance(value, datetime):
                value = datetime_to_str(value)
            if isinstance(value, timedelta):
                value = timedelta_to_str(value)
            if isinstance(field, ForeignKey):
                fk_id = "%s_id" % field.name
                if value is None:
                    response[fk_id] = None
                else:
                    response[fk_id] = getattr(self.model, fk_id)
                    value = str(value)
            response[field.name] = value
        for field in opts.local_many_to_many:
            value = getattr(self.model, field.name)
            value = value.values_list('pk', flat=True)
            response[field.name] = list(value)
        return response