无法从 CreateView 重定向

Question

我是 Django 新手，缺乏经验，尝试实现基于类的视图，但完全无法设置 success_url。

我尝试了两种我认为基于 Google 最接近正确的方法，但不确定哪一种最不可靠：

1. success_url = 'letters/home' -> 导致意外重定向 /letters/write/letters/home 而我希望它转到 /letters/home

2. reverse_lazy('letters:home') 导致“未找到 'home' 的反向。'home' 不是有效的视图函数或模式名称。”

这是我的代码：

查看

from .models import Topic
from django.views.generic.edit import CreateView
from django.views.generic import TemplateView
from django.urls import reverse_lazy
from .forms import WriteLetterForm


class HomeView(TemplateView):
    template_name = 'letters/letter/home.html'


class WriteLetterView(CreateView):
    template_name = 'letters/letter/write_letter.html'
    form_class = WriteLetterForm
    success_url = 'letters/home' # reverse_lazy('letters:home')
    # success_url = 'letters/home'
    # success_url = reverse_lazy('HomeView')


    def form_valid(self,form):
        form.instance.author = self.request.user
        form.instance.topic = Topic.objects.get(slug=self.kwargs['slug'])
        result = super(WriteLetterView,
                       self).form_valid(form)
        cd = form.cleaned_data
        # user = authenticate(username=cd['username'],
        #                    password=cd['password1'])
        # login(self.request, user)

        return result

应用内的urls.py

from django.urls import path
from . import views
app_name = 'letters'


urlpatterns = [
    path('home/', views.HomeView.as_view()),
    path('write/<str:slug>', views.WriteLetterView.as_view()),
]

forms.py

from django import forms
from .models import Letter
from braces.forms import UserKwargModelFormMixin

class WriteLetterForm(UserKwargModelFormMixin, forms.ModelForm):
    #letter = forms.ModelChoiceField(queryset=Letter.objects.all())

    class Meta:
        model = Letter
        fields = ['body', 'picture_1', 'picture_2', 'picture_3']


    def create(self):
        obj = super(WriteLetterForm, self).save(commit=False)
        obj.author_id = self.user
        obj.save()
        return obj

我哪里做错了？ :(

Answer 1

urlpatterns = [
    path('home/', views.HomeView.as_view(),name="home"),
    path('write/<str:slug>', views.WriteLetterView.as_view()),
]


 success_url = reverse_lazy('letters:home')

这样就可以了，因为你还没有命名主页 url，因此它显示 url not found