如何在Realm Swift中过滤为当前日期创建的事件? [英] How do I filter events created for the current date in the Realm swift?

问题描述

如何过滤Realm swift中为当前日期创建的事件? 我尝试了以下类似的操作，但这是错误的.

How do I filter events created for the current date in the Realm swift? I tried something like below but this wrong.

let dtSource = datasource.filter("Create == NSDate()").count

更新:获取过滤器以将我的日期创建为字符串.

Update: Getting the filter creating my date as a string.

http://i.stack.imgur.com/8fLX9.png

http://i.stack.imgur.com/HDR2X.png

推荐答案

Create == NSDate()形式的查询将检查确切的日期相等性，并将其与第二个进行比较.如果要检查日期是否在给定间隔之间，例如检查日期是否在特定日期，而不管一天中的什么时间，则可以执行BETWEEN检查:

A query in the form of Create == NSDate() will check exact date equality, which will compare down to the second. If you want to check if a date is between a given interval, like checking if it's on a specific day, regardless of the time of day, you could do a BETWEEN check:

let dtSource = datasource.filter("Create BETWEEN %@", [firstDate, secondDate]).count

更新:

以下是完整的代码示例，可获取当天的所有日期模型:

Here's a full code sample to get all date models for the current day:

import RealmSwift

class Event: Object {
    dynamic var date = NSDate()
}

let todayStart = Calendar.current.startOfDay(for: Date())
let todayEnd: Date = {
  let components = DateComponents(day: 1, second: -1)
  return Calendar.current.date(byAdding: components, to: todayStart)!
}()
events = realm.objects(Event.self).filter("date BETWEEN %@", [todayStart, todayEnd])

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