关于Django model 与json序列的转换

最新推荐文章于 2023-12-04 17:35:55 发布

贱贤同学

最新推荐文章于 2023-12-04 17:35:55 发布

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文章标签： django json python

报错

MyUser is not JSON serializable

参考如下
http://www.yihaomen.com/article/python/279.htm#2189048-tsina-1-4101-9798c04a6d88069852106b36090cb63b://

在模型类中加入如下代码将model转换为json

class MyUser(models.Model):

    def toJSON(self):
        fields = []
        for field in self._meta.fields:
            fields.append(field.name)
    
        d = {}
        import datetime
        for attr in fields:
            if isinstance(getattr(self, attr),datetime.datetime):
                d[attr] = getattr(self, attr).strftime('%Y-%m-%d %H:%M:%S')
            elif isinstance(getattr(self, attr),datetime.date):
                d[attr] = getattr(self, attr).strftime('%Y-%m-%d')
            else:
                d[attr] = getattr(self, attr)
    
        import json
        return json.dumps(d)

使用时将json序列转成model

def text(request):
    if 'user' in request.session:             
        user = request.session['user']
        user = MyUser(**json.loads(user))      #将json序列转换成model
        event = UserEvent(user=user,ETime=date.today())
        event.save()
    else:
        user = None
    return render_to_response('welcome.html',{'user':user})