在 POST 后重定向并传递数据时重定向 URL 的持久性

Question

成功提交表单后，我会重定向到“成功”页面，该页面会显示“谢谢”消息以及有关提交的一些信息。为此，我将 POST 数据放入会话中，重定向到相应的 URL，然后使用会话数据呈现模板。

但是，这意味着如果有人手动导航到“成功”网址，他们将看到来自之前提交的表单的“成功”消息。我该如何防止呢？表格在/register/ 处理。成功的提交被重定向到/register/success。我希望那些在浏览器中实际输入/register/success/（没有提交表单）的人看到错误页面或其他内容。怎么处理？

urls.py

url(r'^register/$', views.register, name='register'),
url(r'^register/success/$', views.registration_success, name='registration_success'), 

views.py

def register(request):
    if request.method == 'POST':
        if the_form.is_valid():
            my_id = the_form.cleaned_data['myid']
            email_addr = the_form.cleanedJ_data['emailaddr']
            request.session['registration'] = {'my_id': my_id, 'email_addr': email_addr }

            return HttpResponseRedirect(reverse('polls:registration_success'))


def registration_success(request):
    template = loader.get_template('polls/submitted.html')
    context = RequestContext(request, request.session.get('registration'))
    return HttpResponse(template.render(context))

Answer 1

您可以使用 Django 会话来实现。这是使用您的代码的示例。

def register(request):
    if request.method == 'POST':
        if the_form.is_valid():
            my_id = the_form.cleaned_data['myid']
            email_addr = the_form.cleanedJ_data['emailaddr']
            request.session['registration'] = {'my_id': my_id, 'email_addr': email_addr }
            request.session['form-submitted'] = True
            return HttpResponseRedirect(reverse('polls:registration_success'))


def registration_success(request):
    if not request.session.get('form-submitted', False):
        # handle the case where there is no form submitted
        return HttpResponseRedirect(reverse('polls:register'))
    template = loader.get_template('polls/submitted.html')
    context = RequestContext(request, request.session.get('registration'))
    return HttpResponse(template.render(context))