django 处理时间字段

import time,hashlib,json
import models
from django.shortcuts import render,HttpResponse
from MadKing import settings

from django.core.exceptions import ObjectDoesNotExist
def json_date_handler(obj):
    if hasattr(obj, ‘isoformat‘):
        return obj.strftime("%Y-%m-%d")


def json_datetime_handler(obj):
    if hasattr(obj, ‘isoformat‘):
        return obj.strftime("%Y-%m-%d %H:%M:%S")