类型错误：对象不是JSON序列化在Django 1.8的Python 3.4

我使用Django 1.8和Python 3.4类型错误：对象不是JSON序列化在Django 1.8的Python 3.4

当以下观点正在跑，Django的抛出类型的错误 - 对象不是JSON序列化

Views.py

from django.http import HttpRequest,HttpResponse 
from django.http import JsonResponse 
from json import dumps 

def get_stats(request): 
    if request.method == "POST": 
     srch_dropV = request.POST['srch_dropAJ'] 
    else: 
     srch_dropV = '' 
    if(srch_dropV == 'Green'): 
     students = GreenBased.objects.all() 
    if(srch_dropV == 'Yellow'): 
     students = YellowBased.objects.all() 
    response_data = {} 
    try: 
     response_data['result'] = 'Success' 
     response_data['message'] = list(students) 
    except: 
     response_data['result'] = 'Ouch!' 
     response_data['message'] = 'Script has not ran correctly' 
    return HttpResponse(JsonResponse(response_data), content_type="application/json")

我试图从MySQL数据库中读取几排和HTML文件显示它，我面临以下错误消息，当上述观点正在跑

TypeError: YellowBased: YelloBased object is not JSON serializable

在HTML页面中，我有一个下拉列表..根据选择的选项，我的Ajax将返回从mysql表中获取的记录。

Models.py

class GreenBased(models.Model): 
    NumOfStudents = models.CharField(max_length=300,blank=True) 
    Green = models.CharField(max_length=300,blank=True) 
    class Meta: 
     managed = False 
     db_table = "GreenStats" 

class YelloBased(models.Model): 
    NumOfStudents = models.CharField(max_length=300,blank=True) 
    Yellow = models.CharField(max_length=300,blank=True) 
    class Meta: 
     managed = False 
     db_table = "YellowStats"

GreenStats和YellowStats表包含在MySQL 只有2 * 2行有人可以帮我找出这个问题？

来源

2015-06-20 user3128771

你检查了吗？ http://stackoverflow.com/q/16790375/4724196 – HassenPy

我已经查过了。在DJango 1.8中，Json库已被更改，我失去了一些东西:(..线路response_data ['message'] =列表（学生）似乎在视图中失败。我试图解决这个问题，但 – user3128771

对不起，此行失败返回HttpResponse（JsonResponse（response_data），content_type =“application/json”） – user3128771

您必须序列您student对象名单，尝试这样的事情：

from django.http import HttpRequest,HttpResponse 
from django.http import JsonResponse 
from json import dumps 
from django.core import serializers 


def get_stats(request): 
    if request.method == "POST": 
     srch_dropV = request.POST['srch_dropAJ'] 
    else: 
     srch_dropV = '' 
    if(srch_dropV == 'Green'): 
     students = GreenBased.objects.all() 
    if(srch_dropV == 'Yellow'): 
     students = YellowBased.objects.all() 
    response_data = {} 
    try: 
     response_data['result'] = 'Success' 
     response_data['message'] = serializers.serialize('json', students) 
    except: 
     response_data['result'] = 'Ouch!' 
     response_data['message'] = 'Script has not ran correctly' 
    return HttpResponse(JsonResponse(response_data), content_type="application/json")

请注意，在换线：
response_data['message'] = serializers.serialize('json', students)

检查文档的更多定制： https://docs.djangoproject.com/en/1.8/topics/serialization/

希望这有助于！

来源

2015-06-20 12:38:51 HassenPy

类型错误：对象不是JSON序列化在Django 1.8的Python 3.4

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