Question

我是初学者，所以请在解释时保持友好，谢谢。

所以基本上我试图使用createdAt来获取今天制作的对象。

     let parseQuery = PFQuery(className: "request")

    parseQuery.findObjectsInBackgroundWithBlock { (objects, error) -> Void in
        if let objects = objects {

            for object in objects {

                    self.reqDates.append(object.createdAt!)
            }
        }
    }

            let formatter = NSDateFormatter()
            formatter.dateFormat = "yyyy-MM-dd HH:mm"
            let formatteddate = formatter.stringFromDate(self.reqDates[indexPath.row])
            myCell.reqDate.text = formatteddate

当我执行此操作时，它会正确显示所有具有日期的对象。但是，我怎样才能显示今天的对象，而不是所有对象都被创建。我希望我解释得足够好。

Answer 1

createdAt大于今天（午夜）的请求对象

 let parseQuery = PFQuery(className: "request")

            let cal = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)!
            let components = cal.components([.Day , .Month, .Year ], fromDate: NSDate())
            let todayDate = cal.dateFromComponents(components)

            parseQuery.whereKey("createdAt", greaterThan:todayDate!)

            parseQuery.findObjectsInBackgroundWithBlock { (objects, error) -> Void in
                if let objects = objects {

                    for object in objects {
                        print(object.createdAt)
                    }
                }
            }

Swift：如何从解析中获取今天生成的对象？

1 个答案: