如何在父母的子女类别中搜索字符串？

Question

我想在每个孩子中搜索“查询”，并将结果呈现给list.html。我找不到解决方案，所以我决定在这里询问。这是我的代码：

def search_query_string(request, path=None, instance=None):
query = request.GET.get('query', False)
category = request.GET.get('category', False)
if category:
    cat = get_object_or_404(Category, name=category)
    children = cat.get_descendants(include_self=False)
ads = None
if query:
    if category:
        ads = Ad.objects.filter(Q(name__icontains=query) ) # I want to search query in children here
        return render_to_response('ads/list.html', locals(), context_instance=RequestContext(request))
    ads = Ad.objects.filter(Q(name__icontains=query))
return render_to_response('ads/list.html', locals(), context_instance=RequestContext(request))

如您所见，我已经有了子类别的列表，但仍然不知道如何搜索它们。请帮助：（

编辑

所以我终于弄清楚了该怎么做。在这里：

def search_query_string(request, path=None, instance=None):
    query = request.GET.get('query', False)
    category = request.GET.get('category', False)
    query_list = []
    if category:
        parent = get_object_or_404(Category, name=category)
        children = parent.get_descendants(include_self=False)
        for c in children:
            query_list.append(c.name)
        print(query_list)
    ads = None
    if query:
        if category:
            ads = Ad.objects.filter(Q(name__icontains=query) & Q(category__name__in=query_list))
            return render_to_response('ads/list.html', locals(), context_instance=RequestContext(request))
        ads = Ad.objects.filter(Q(name__icontains=query))
    return render_to_response('ads/list.html', locals(), context_instance=RequestContext(request))