django - Django反向导致URL循环导入，为什么？

我收到此错误:



我知道url模式中包含一些内容，看起来像这样:

from django.conf.urls import include, url
from django.contrib import admin

    urlpatterns = [
        url(r'^perfil/', include('clientes.urls'), namespace="cliente"),
        url(r'^admin/', include(admin.site.urls))
    ]

clientes.urls:

from django.conf.urls import url
from django.contrib.auth import views as auth_views

from clientes import views

urlpatterns = [
        # login
        url(r'^login/$', auth_views.login, {'template_name': 'perfiles/login.html'}, name="login"),
        url(r'^logout/$', auth_views.logout, {'template_name': 'perfiles/logged_out.html'}, name="login"),

        url(r'^mi_perfil/$', views.mi_perfil, name="mi_perfil"),
        url(r'^registro_usuario/$', views.RegistroUsuario.as_view(), name="registro_usuario")
    ]

RegistroUsuario View 如下所示:

class RegistroUsuario(FormView):
    template_name = "perfiles/registro_usuario.html"
    form_class = UserCreationForm
    success_url = reverse("cliente:mi_perfil")  # THIS REVERSE

    def form_valid(self, form):
        return redirect("cliente:mi_perfil")

    context = {'form': UserCreationForm}

我知道我可以将reverse替换为像perfil/mi_perfil这样的纯文本网址。但是，我想知道为什么反向发生这种情况，我无法在de docs上找到解释。另外，使用反向更好，因为它是动态的(如果我随时更改url，只要保留其名称，它仍然可以工作)。

最佳答案

导入 View 时(可能是首次加载urlconf时)进行reverse()调用。您需要改用reverse_lazy():

from django.core.urlresolvers import reverse_lazy

class RegistroUsuario(FormView):
    template_name = "perfiles/registro_usuario.html"
    form_class = UserCreationForm
    success_url = reverse_lazy("cliente:mi_perfil")  # THIS REVERSE

    def form_valid(self, form):
        return redirect("cliente:mi_perfil")

    context = {'form': UserCreationForm}

关于django - Django反向导致URL循环导入，为什么？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/34031818/