随机循环Django

时间:2013-07-08 09:16:59

标签: django django-templates django-views

views.py

def mainpage(request):

    ads_right = Ads.objects.select_related().all().filter(ads_section = 'R')
    ads_left = Ads.objects.select_related().all().filter(ads_section = 'L')

    variables = RequestContext(request, {'ads_right': ads_right,'ads_left': ads_left})
    return render_to_response('index.html', variables)

您能否回答模板标签,如何在每次刷新时随机播放'ads_right'和'ads_left'。

1 个答案:

答案 0 :(得分:0)

在你的观点中随机播放:

ads_right = Ads.objects.select_related().all().filter(ads_section = 'R').order_by('?')
ads_left = Ads.objects.select_related().all().filter(ads_section = 'L').order_by('?')

# return things as always
variables = RequestContext(request, {'ads_right': ads_right,'ads_left': ads_left})
return render_to_response('index.html', variables)

如果您需要模板标签,可以使用以下内容:

@register.filter
def shuffle(arg):
    # slice it, cast it to list
    my_list = list(arg[:])
    random.shuffle(my_list)
    return my_list

然后在模板中:

{% for item in ads_left|shuffle %}