django json 序列化程序有问题

Question

我尝试寻找答案，但到目前为止无济于事，基本上我尝试将 django 模型返回为 json 然而，似乎序列化程序将其转换为字符串

我的代码如下：

view.py

from django.shortcuts import render
from screener.models import maintable
from .models import Messages
from django.http import JsonResponse
from django.core import serializers
from datetime import datetime
import json

def infiniteScroll(request, room_name):
    dateFilter=request.GET.get('date')
    dateFilter=dateFilter[5:len(dateFilter)-4]
    dateFilter=datetime.strptime(dateFilter, '%d %b %Y %H:%M:%S')
    data=serializers.serialize('json', reversed(Messages.objects.filter(room=room_name).filter(date_added__lt=dateFilter).order_by('-date_added')[:2]))
    return JsonResponse(data, safe=False)

urls.py

from django.contrib import admin
from django.urls import path
from . import views

app_name='chat'
urlpatterns = [
    path('<str:room_name>/', views.room, name='room'),
    path('<str:room_name>/hist/', views.infiniteScroll, name='infiniteScroll'),
]

当我访问网站时http://127.0.0.1:8000/chat/AAPL/hist/?date=Thu,%2023%20Sep%202021%2014:03:42%20GMT

结果是一个带有字符串的页面：

"[{\"model\": \"chat.messages\", \"pk\": 118, \"fields\": {\"username\": \"adiputra12\", \"room\": \"AAPL\", \"content\": \"hello\", \"date_added\": \"2021-09-23T13:54:30.043Z\"}}]"

我怎样才能返回json，如下所示：

[{'model': 'chat.messages', 'pk': 118, 'fields': {'username': 'adiputra12', 'room': 'AAPL', 'content': 'hello', 'date_added': '2021-09-23T13:54:30.043Z'}]

Answer 1

在这行代码之后

data=serializers.serialize('json',reversed(Messages.objects.filter(room=room_name).filter(date_added__lt=dateFilter).order_by('-date_added')[:2]))

尝试添加

data = json.loads(data)
return JsonResponse(data, safe=False)