Django urls - 找不到 'url name' 的反向

Question

我有一个名为 polls 的 Django 应用程序。我正在尝试在模板中使用表单，它的操作正在调用另一个 url。 mysite/urls.py:

from django.conf.urls import include, url
from django.contrib import admin
urlpatterns = [
    url(r'^$', include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

polls/urls.py:

from django.conf.urls import url
from . import views
app_name = 'polls'
urlpatterns = [
    url(r'^$', views.call_login, name='call_login'),
    url(r'^homepage/$', views.login, name='login'),
]

login.html:

<form name="form" method="post" action="{% url 'login' %}" >
    {% csrf_token %}
    <input type="text" placeholder="username" name="user"><br>
    <input type="password" placeholder="password" name="password"><br>
    <input type="submit" value="Login" />
</form>

我得到的错误：无反向匹配：

Reverse for 'login' not found. 'login' is not a valid view function or pattern name.

知道为什么吗？

Answer 1

改变你的主要url模式

来自

urlpatterns = [
    url(r'^$', include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

至此

urlpatterns = [
    url(r'^', include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

和模板表单

<form name="form" method="post" action="{% url 'polls:login' %}" >
    {% csrf_token %}
    <input type="text" placeholder="username" name="user"><br>
    <input type="password" placeholder="password" name="password"><br>
    <input type="submit" value="Login" />
</form>

Django urls - 找不到 'url name' 的反向

Django urls -Reverse for 'url name' not found

django

django-templates

django-urls

django-forms