如何处理NoReverseMatch错误？

它是我第一次遇到这样的错误，我环顾四周，但未能在相同的情况下发现错误。重定向应该发生在用户提交表单时发生。如何处理NoReverseMatch错误？

在我的看法中，我使用reverse（）函数返回url并重定向到它。下面是是观点：

def get_category(request): 
    categories = Category.objects.all().prefetch_related('item') 
    form = ItemAddToCartForm(request=request, label_suffix=':') 
    # need to evaluate the HTTP method 
    if request.method == 'POST': 
     # add to order..create the bound form 
     postdata = request.POST.copy() 
     form = ItemAddToCartForm(request,postdata) 
     # check validation of posted data 
     if form.is_valid(): 
      # add to order and redirect to order page 
      order.add_to_order(request) 
      # if test cookie worked, get rid of it 
      if request.session.test_cookie_worked(): 
       request.session.delete_test_cookie() 
      url =urlresolvers.reverse('show_order') 
      # redirect to order page 
      return HttpResponseRedirect(url) 
    else: 
     # it's a GET, create the unbound from. Note request as a Kwarg 
     form = ItemAddToCartForm(request=request,label_suffix=':') 
    # assign the hidden input the item slug 
    # set the test cookie on our first GET request 
    request.session.set_test_cookie() 
    context={ 
     'categories':categories, 
     'form':form, 
#  'menu':menu, 

    } 
    return render_to_response('category.html',context,context_instance=RequestContext(request))

这里是URL的视图它定向到：

def show_order(request): 
    if request.method == 'POST': 
     if postdata['submit'] == 'Remove': 
      order.remove_from_order(request) 
     if postdata['submit'] == 'Update': 
      order.update_order(request) 
    order_items = order.get_order_items(request) 
    page_title = 'F4L order' 
    order_subtotal = order.order_subtotal(request) 
    return render_to_response('public/order.html',context_instance=RequestContext(request))

的网址为上述观点：

from django.conf.urls.defaults import * 

urlpatterns = patterns(
    'live.views', 
    url(r'^$', view="show_order",name="order_index"), 
)

网址：

url(r'^orders/', include('live.urls')), 
url(r'^menu/$','live.views.get_category'),

这里是HTML表单：

<form method="post" action="."> 
    <a href="{% url order_index %}"> 
    {% csrf_token %} 
    {{ form.as_p }} 
    <br /> 
    <input type="submit" value="Add To Order" name="submit"> 
    </a> 

Traceback: 
File "/home/mats-invasion/projects/f4l/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response 
    111.       response = callback(request, *callback_args, **callback_kwargs) 
File "/home/mats-invasion/projects/f4l/f4l/live/views.py" in get_category 
    39.   url =urlresolvers.reverse('show_order') 
File "/home/mats-invasion/projects/f4l/env/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in reverse 
    476.  return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)) 
File "/home/mats-invasion/projects/f4l/env/local/lib/python2.7/site-packages/django/core/urlresolvers.py" in _reverse_with_prefix 
    396.     "arguments '%s' not found." % (lookup_view_s, args, kwargs)) 

Exception Type: NoReverseMatch at /menu/ 
Exception Value: Reverse for 'show_order' with arguments '()' and keyword arguments '{}' not found.

谢谢。

来源

2013-01-10 Mats_invasion

传递给reverse的值应该是url的名称而不是视图。

url =urlresolvers.reverse('order_index')

来源

2013-01-10 06:20:31 Charl

感谢charl，但随后出现另一个问题，就像我按任何按钮（填写表单）重定向页面。你有没有遇到过这个。 –

表单中设置为提交类型的任何按钮（type =“submit”）将提交表单。不知道我是否正确理解这一点。 – Charl

不用担心charl，我解决了问题，这是我的html。我把错误的地方放在了重定向URL '。 –

如何处理NoReverseMatch错误？

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