Django TypeError“dict”对象不可调用

Question

我收到以下行的错误：username = login_form.cleaned_data('username')，因为在某个地方它似乎是一个字典，但我无法理解为什么。谁能告诉我，问题是什么？

views.py

def index(request):

    return render(request, 'web/base.html')

def register_view(request):

    register_form = UserCreationForm()

    if request.method == "POST":

        register_form = UserCreationForm(request.POST)

        if register_form.is_valid():

            register_form.save()

            username = register_form.cleaned_data("username")

            password = register_form.cleaned_data("password1")

            user = authenticate(request, username=username, password=password)

            if user:

                login(request, user)

    return render(request, 'web/register.html', {'register_form': register_form})

def login_view(request):

    login_form = AuthenticationForm()

    if request.method == 'POST':

        login_form = AuthenticationForm(data=request.POST)

        if login_form.is_valid():

            username = login_form.cleaned_data('username')

            password = login_form.cleaned_data('password')

            user = authenticate(request, username=username, password=password)

            if user:

                login(request, user)

    return render(request, 'web/login.html', {'login_form': login_form})

def logout_view(request):

    logout(request)

    return redirect(reverse('web:index'))

Answer 1

Form.cleaned_data从设计上来说，它确实是一本字典。要获取字典中键的值，请使用[ ]，例如username = register_form.cleaned_data["username"]

Answer 2

从字典中获取值，例如：username = login_form.cleaned_data['username'] password = login_form.cleaned_data['password']您无法使用 () 而是使用 [] 来获取 DICTIONARIES 中键的值。

Answer 3

login_form.cleaned_data是一本字典，所以username = login_form.cleaned_data('username')没有意义，你应该使用：username = login_form.cleaned_data['username'] password = login_form.cleaned_data['password']因此，元素也会发生同样的情况password。