django反向不使用参数

i am trying to use django reverse to route back to a page which take an argument vendor_id.

我正在尝试使用django reverse来路由回到一个带有参数vendor_id的页面。

I am trying to do it this way using this post as reference: POST

我试图这样做使用这篇文章作为参考：POST

return HttpResponseRedirect(reverse('vendor_data', kwargs={'vendor_id':vendor_id}))

My view method which should be called:

我应该调用的视图方法：

def vendorData(request):
    vendors = Vendors()
    if request.method == 'GET':
        vendor_id = request.GET.get('vendor_id')
        if vendors.checkValidVendorId(vendor_id) == False:
            return HttpResponse('<h2>404<br>Invalid Vendor Id.</h2>')
        else:
            vendor_details = vendors.getVendorData(vendor_id)
            .....
            return render(request, 'vendor_data.html', context_dict)

my urls.py:

我的urls.py：

url(r'^vendor_data/', views.vendorData, name='vendor_data'),

If i dont pass any argument then it shows the HttpResponse from my views method. If i pass argument vendor_id like this:

如果我没有传递任何参数，那么它会从我的views方法中显示HttpResponse。如果我像这样传递参数vendor_id：

return HttpResponseRedirect(reverse('vendor_data', kwargs={'vendor_id':vendor_id}))

It throws an error. The traceback is:

它抛出一个错误。追溯是：

Traceback:
File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\Manish\Desktop\ScratcherAdmin\ScratcherAdmin\vendors\views.py" in editVendorData
  162.      return HttpResponseRedirect(reverse('vendor_data', kwargs={'vendor_id':vendor_id}))
File "C:\Python27\lib\site-packages\django\core\urlresolvers.py" in reverse
  579.     return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))
File "C:\Python27\lib\site-packages\django\core\urlresolvers.py" in _reverse_with_prefix
  496.                              (lookup_view_s, args, kwargs, len(patterns), patterns))

Exception Type: NoReverseMatch at /update_vendor_data/
Exception Value: Reverse for 'vendor_data' with arguments '()' and keyword arguments '{'vendor_id': u'20150001'}' not found. 1 pattern(s) tried: ['vendor_data/']

How to solve this?

怎么解决这个？

1 个解决方案

#1

What you are expecting inside your view is a GET parameter from query string. Something your expected URL should be something like,

您在视图中期望的是来自查询字符串的GET参数。您期望的URL应该是类似的东西，

www.example.com/vendor/?vendor_id=12345

And below,

在下面，

return HttpResponseRedirect(reverse('vendor_data', kwargs={'vendor_id':vendor_id}))

will redirect you to something like,

将你重定向到像，

www.example.com/vendor/12345

For which your view should expect an additional parameter vendor_id,

您的视图应该有一个额外的参数vendor_id，

def vendorData(request, vendor_id):

and accordingly your rest of the code might change.

因此你的其余代码可能会改变。

Solution to your problem:

解决您的问题：

return HttpResponseRedirect("{}?vendor_id={}".format(reverse('vendor_data'), vendor_id))

#1