Question

我正在制作一个django应用程序，显示大学网站的例行订单。特定订单应在网站上保留一周，然后消失。这是我的模特。

class RoutineOrder(models.Model):
    Subject = models.TextField()
    Details = RichTextUploadingField()
    LastEdited = models.DateTimeField(auto_now=True)
    Added = models.DateTimeField(auto_now_add=True)

    def get_absolute_url(self):
        return reverse('nitwro:home')

class Home(TemplateView):
   template_name = 'nitwro/home.djt'
   startdate = datetime.today()
   enddate = startdate + timedelta(days=6)
   def get_context_data(self, **kwargs):
           context = super(Home, self).get_context_data(**kwargs)
           context['allorders'] = RoutineOrder.objects.filter().order_by('-Added')
        return context

怎么做才能做到这一点？

Answer 1

将传递给视图的对象过滤为仅过去一周创建的对象;

func PDTForamte(endTime: String) -> String{
    // create dateFormatter with UTC time format
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss+zzzz"
    dateFormatter.timeZone = TimeZone(identifier: "UTC")

    guard let date = dateFormatter.date(from: endTime) else {
        return endTime.components(separatedBy: "T").first ?? "" //return date before 'T'.
    }

    let pdtFormatter = DateFormatter()
    pdtFormatter.dateStyle = .long
    pdtFormatter.timeStyle = .long
    if let americaZone = NSTimeZone(name: "America/Los_Angeles") {
        pdtFormatter.timeZone = americaZone as TimeZone
    }

    let dateString: String = pdtFormatter.string(from: date)

    let calendar = NSCalendar.autoupdatingCurrent
    //We subtract 1 min because American Date here be 12:00:00 AM but It should be return to the previous day
    let newDate = calendar.date(byAdding: .minute, value: -1, to: pdtFormatter.date(from: dateString)!) ?? Date()
    pdtFormatter.dateFormat = "yyyy-MM-dd"
    let newDateString: String = pdtFormatter.string(from: newDate)

    return newDateString
}

使用小写字段名称也是一种好习惯。

如何在django中设置对象的到期日期？

1 个答案: