Python Django Dict对象不可调用

Question

我一直在尝试调试此问题，但似乎无法弄明白。

调试时，我可以看到所有变量都应该是它们的位置，但我似乎无法将它们排除在外。

运行时，我收到错误消息'dict' object is not callable

这是来自Django的完整错误消息

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/?form_base_currency=7&form_counter_currency=14&form_base_amount=127

Django Version: 1.8.6
Python Version: 3.4.3
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'client']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']


Traceback:
File "/home/johan/sdp/currency-converter/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/johan/sdp/currency-converter/currency_converter/client/views.py" in index
  22.             form_base_currency = form.cleaned_data('form_base_currency').currency_code

Exception Type: TypeError at /
Exception Value: 'dict' object is not callable

为清楚起见，我添加了调试器变量的屏幕截图。

这是我一直在使用的代码：

if request.method == 'GET':
    form = CurrencyConverterForm(request.GET)
    if form.is_valid():
        form_base_currency = form.cleaned_data('form_base_currency').currency_code
        form_counter_currency = form.cleaned_data('form_counter_currency')
        form_base_amount = form.data.cleaned_data('form_base_amount')

为了让form_base_currency正常工作，我尝试了以下不同的方法：

form_base_currency = form.cleaned_data('form_base_currency').currency_code
form_base_currency = form.cleaned_data.form_base_currency.currency_code
form_base_currency = form.cleaned_data('form_base_currency.currency_code')

它们都不起作用。有人能告诉我如何解决这个问题吗？

Answer 1

字典需要方括号

 form_counter_currency = form.cleaned_data['form_counter_currency']

虽然您可能希望使用get，但您可以提供默认

 form_counter_currency = form.cleaned_data.get('form_counter_currency', None)

Answer 2

导入

 from rest_framework.response import Response

然后将其写入 views.py 文件

class userlist(APIView):
def get(self,request):
    user1=webdata.objects.all()
    serializer=webdataserializers(user1,many=True)
    return Response(serializer.data)
def post(self):
    pass