python之models.py 中的 django python slug 变量

当我点击搜索按钮时..它显示了

找不到页面 (404)

没有类别匹配给定的查询。

我的看法

def search_in_category(request, slug): 
# reset the search params, if present 
 
try: 
    del request.session['search'] 
except KeyError: 
   pass 
return search_results(request, slug) 
 
def search_results(request, slug): 
category = get_object_or_404(Category, slug=slug) 
fields = list(category.field_set.all()) 
fields += list(Field.objects.filter(category=None)) 
fieldsLeft = [field.name for field in fields] 
 
if request.method == "POST" or 'search' in request.session: 
    ads = category.ad_set.filter(active=True, 
                                 expires_on__gt=datetime.datetime.now()) 
    # A request dictionary with keys defined for all 
    # fields in the category. 
    post = {} 
    if 'search' in request.session: 
        post.update(request.session['search']) 
    else: 
        post.update(request.POST) 
 
    sforms = prepare_sforms(fields, fieldsLeft, post) 
 
    isValid = True 
 
    for f in sforms: 
        # TODO: this assumes the form is not required 
        # (it's a search form after all) 
        if not f.is_valid() and not f.is_empty(): 
            isValid = False 
 
    if isValid: 
        if request.method == 'POST': 
            request.session['search'] = {} 
            request.session['search'].update(request.POST) 
            return redirect('classifieds_browse_search_results', slug=slug) 
 
        for f in sforms: 
            ads = f.filter(ads) 
 
        if ads.count() == 0: 
            return render_to_response('classifieds/list.html', 
                                      {'no_results': True, 
                                       'category': category}, 
                                      context_instance=RequestContext(request)) 
        else: 
            context = context_sortable(request, ads) 
            context['category'] = category 
            return render_to_response('classifieds/list.html', context, 
                                      context_instance=RequestContext(request)) 
else: 
    sforms = prepare_sforms(fields, fieldsLeft) 
 
return render_to_response('classifieds/search.html', 
                          {'forms': sforms, 'category': category}, 
                          context_instance=RequestContext(request)) 

我的模型.py

class Category(models.Model): 
site = models.ForeignKey(Site) 
template_prefix = models.CharField(max_length=200, blank=True) 
name = models.CharField(max_length=200) 
slug = models.SlugField() 
enable_contact_form_upload = models.BooleanField(default=False) 
contact_form_upload_max_size = models.IntegerField(default=2 ** 20) 
contact_form_upload_file_extensions = models.CharField(max_length=200, 
                                                 default="txt,doc,odf,pdf") 
images_max_count = models.IntegerField(default=0) 
images_max_width = models.IntegerField(help_text=_(u'Maximum width in pixels.'), 
                                       default=1024) 
images_max_height = models.IntegerField(help_text=_(u'Maximum height in pixels.'), 
                                        default=1024) 
images_max_size = models.IntegerField(help_text=_(u'Maximum size in bytes.'), 
                                      default=2 ** 20) 
images_allowed_formats = models.ManyToManyField(ImageFormat, blank=True) 
description = models.TextField(default='') 
sortby_fields = models.CharField(max_length=200, 
                                 help_text=_(u'A comma separated list of field names that should show up as sorting options.'), 
                                 blank=True) 
sort_order = models.PositiveIntegerField(default=0) 
 
def __unicode__(self): 
    return self.name + u' Category' 
 
class Meta: 
    verbose_name_plural = u'categories' 

我的网址

url(r'^search/(?P<slug>[-\w]+)/$', 'browse.search_in_category', 
    name='classifieds_browse_category_search'), 
 
url(r'^search/results/(?P<slug>[-\w]+)/$', 'browse.search_results', 
    name='classifieds_browse_search_results'), 

这是我的代码，为什么我会收到 404 错误？我需要做什么才能修复此错误？

请您参考如下方法:

你做不到

return search_results(request, slug) 

做这个重定向

return redirect(reverse('classifieds_browse_search_results', kwargs={'slug':slug})) 

不要忘记导入

from django.core.urlresolvers import reverse 
from django.shortcuts import redirect