Question

我有以下观点

def edit_booking(request, pk=None):
    if not request.user.is_authenticated:
        raise Http404

    agent = Agent.objects.get(user=request.user)
    booking = get_object_or_404(Booking, pk=pk)

    form = BookingForm(request.POST or None, instance=booking)
    if form.is_valid():
        instance = form.save(commit=False)
        instance.save()
        return HttpResponseRedirect(instance.get_absolute_url())
    elif form.errors:
        messages.error(request,"There was a problem, please try again")

    context = {
        "form": form,
    }
    return render(request,'booking_form.html', context)

我使用以下urls.py

urlpatterns = [
    url(r'^booking/create', create_booking, name="create-booking"),
    url(r'^booking/$', booking_list, name="booking-list"),
    url(r'^booking/(?P<pk>\d+)/$', booking_detail, name="booking-detail"),
    url(r'^booking/(?P<pk>\d+)/edit', edit_booking, name="edit-booking"),
]

出于某种原因，当我在编辑某些预订后尝试提交表单（例如http://127.0.0.1:8000/booking/24/edit）时，我会自动重定向到（http://127.0.0.1:8000/booking/24/）。

据我所知，django没有在视图中处理任何进一步的代码。我试着通过简单的打印（＆＃34;某些东西＆＃34;）来弄清楚它在代码中的位置结束了但是只要我从模板提交就立即转到网址。为了完整起见，这是模板：

{% extends 'base.html' %}
<div class="col-sm-6 col-sm-offset 3">
{% block content %}
<form method="POST" action=".">{% csrf_token %}
  {{ form.as_p }}
  <input type="submit" value="Save"/>
</form>
{% endblock %}
</div>

Answer 1

＆＃34;。＆＃34;，您用作表单的操作，被浏览器解释为＆＃34;当前路径目录的基础＆＃34;。由于您没有在/ edit URL中使用尾部斜杠，浏览器会将表单提交到最近的基础，即/ booking / 24。

您应该始终使用尾部斜杠：

url(r'^booking/create/$', create_booking, name="create-booking"),
url(r'^booking/$', booking_list, name="booking-list"),
url(r'^booking/(?P<pk>\d+)/$', booking_detail, name="booking-detail"),
url(r'^booking/(?P<pk>\d+)/edit/$', edit_booking, name="edit-booking"),

Answer 2

您需要检查请求方法，否则它将重定向初始表单呈现，因为django使用相同的视图进行初始呈现并提交表单。

if request.method == 'POST':
    if form.is_valid():
        instance = form.save(commit=False)
        instance.save()
        return HttpResponseRedirect(instance.get_absolute_url())       
    elif form.errors:
        messages.error(request,"There was a problem, please try again")
else:
    context = {
        "form": form,
    }
    return render(request,'booking_form.html', context)

django视图重定向到URL它不应该

2 个答案: