NoReverseMatch参数django

Question

为什么会返回NoReverseMatch错误？

视图：

def browse(request): 
    thing_list = Thing.objects.all() 
    if request.method == 'POST': 
     form = BrowseForm(request.POST) 
     if form.is_valid(): 
      make = Make.objects.all() 
      return HttpResponseRedirect(reverse('browse_makes', args=[make])) 
    else: 
     form = BrowseForm() 
    return render(request, 'browse.html', {'form':form, 'thing_list':thing_list}) 

def makes(request, make): 
    ad_list = Thing.objects.filter(make=make) 
    return render(request, 'browse-makes.html', {'thing_list':thing_list}) 

网址：

url(r'^browse/$', 'axlepost.views.browse.browse', name='browse'), 
url(r'^browse/(?P<make>[\w-]+)/$', 'axlepost.views.browse.makes', name='browse_makes'), 

形式：

class BrowseForm(forms.Form): 
    make = forms.ModelChoiceField(queryset=Make.objects.all()) 

模型：

class Make(models.Model): 
    make = models.CharField(max_length=20) 

class Thing(models.Model): 
    make = models.ForeignKey(Make) 

ř eturns Reverse for 'browse_makes' with arguments '([<Make: Samsung>],)' and keyword arguments '{}' not found. 感谢您的想法如何解决这个错误！

Answer 1

你递过reverse() QuerySet而不是1值。也是它的一个.all()查询，所以它可能有多个对象，它与表单结果无关。

make = Make.objects.all() # QuerySet = ([<Make: Samsung>], [<Make: Sony>], [<Make: Apple>], etc) 
return HttpResponseRedirect(reverse('browse_makes', args=[make])) # Expects 1 value 

假设你想重定向到在表单中选择，那么你就需要这样的东西的Make：

if form.is_valid(): 
    # Get the valid form data 
    cd = form.cleaned_data 

    # Get the selected Make 
    make = cd.get('make') 

    # Redirect - note 'make.make'. You want to pass the value not the object 
    return HttpResponseRedirect(reverse('browse_makes', kwargs={'make': make.make})) 

Answer 2

我认为有几个问题

• 您的网址不符合相应的视图

改变这一行

url(r'^browse/(?P<make>[\w-]+)/$', 'axlepost.views.browse.makes', name='browse_makes'), 

到

url(r'^browse/(?P<make>[\w-]+)/$', 'axlepost.views.browse', name='browse_makes'), 

• 更改您的视图定义采取make参数

  高清浏览（请求，使）： ... #change局部变量 '让' 给别的