class HelloView(ModelViewSet):
serializer_class = HelloSerializer
def get(self, request, *args, **kwargs):
range_type = request.data['range_type'].lower()
if range_type == "daily":
try:
client = MongoClient('localhost', 27017)
db = client['MyDatabase']
from_date=datetime.datetime.strptime(request.data['from_date'], "%Y-%m-%d")
to_date = datetime.datetime.strptime(request.data['to_date'], "%Y-%m-%d")
response_list = []
for i in db.MyCollection.find({"date": {'$gte': from_date,
'$lte': to_date}}):
response_list.append(i)
return JsonResponse(response_list, safe=False)
except Exception as e:
return Response({"status": e}, status=HTTP_400_BAD_REQUEST)
我的词典列表为:
response_list = [
{
'_id': ObjectId('5c5ac3227e23080a2beac8a5'),
'date': datetime.datetime(2019, 2, 3, 0, 0),
'per_service_bill': {'network': 5.234823, 'storage': 0.00355492071},
'total_cost': 5.23837792071
},
{
'_id': objectid('5c5ac32d7e23080a2beac8be'),
'date': datetime.datetime(2019, 2, 4, 0, 0),
'per_service_bill': {'network': 4.9254925499999995, 'storage': 0.00351209034},
'total_cost': 4.92900464034
}
]
我已经尝试了这些(使用它们各自的进口),但是没有一个起作用:
谁能告诉我们解决办法?
我需要返回json响应,但它给出错误为:
“ TypeError:TypeError类型的对象不可JSON序列化”
答案 0 :(得分:1)
ObjectId的类型不清楚,而datatime是复杂的类型。 Json专注于序列化字典,列表,整数,浮点数和字符串。此类型列表中未包含的所有内容都无法序列化。我忽略了ObjectId对象,而得到的错误是
Object of type 'datetime' is not JSON serializable
一种解决方案是对变量进行字符串化处理:
response_list = [
{
'_id': str(ObjectId('5c5ac3227e23080a2beac8a5')),
'date': str(datetime.datetime(2019, 2, 3, 0, 0)),
'per_service_bill': {'network': 5.234823, 'storage': 0.00355492071},
'total_cost': 5.23837792071
},
{
'_id': str(ObjectId('5c5ac32d7e23080a2beac8be')),
'date': str(datetime.datetime(2019, 2, 4, 0, 0)),
'per_service_bill': {'network': 4.9254925499999995, 'storage': 0.00351209034},
'total_cost': 4.92900464034
}
]
最后,您将需要复杂对象的字典或字符串表示形式。然后,您可能会从客户端的字符串/字典构建正确的复杂对象。