model.py 文件源码

def _format_date(self, date):
        """
        Format a date or timestamp.

        :param date: The date or timestamp
        :type date: datetime.datetime or datetime.date or arrow.Arrow

        :rtype: str
        """
        if date is None:
            return date

        format = self.get_date_format()

        if format == 'iso':
            if isinstance(date, basestring):
                return arrow.get(date).isoformat()

            return date.isoformat()
        else:
            if isinstance(date, arrow.Arrow):
                return date.format(format)
            elif isinstance(date, basestring):
                return arrow.get(date).format(format)

            return date.strftime(format)