如何在Meteor中存储日期和时间进行范围查询？ [英] How to store Date and Time in Meteor for range queries?

问题描述

我的应用需要创建一个在浏览器中有3个不同时区显示startDate的对象。日期也必须包括确切的时间。日期应该以这样一种方式进行存储，即允许查询给我所有的X和Y之间的日期，并解析为3个时区。

My app needs to create objects that will have a startDate shown in 3 different timezones in browser. The date must also include the exact time. The date should be stored in such a way that it allows for queries "give me all for date between X and Y" and parse it to 3 timezones.

我的问题是如何最好地保存（并随后检索）日期和时间，以便稍后在日期范围内查询，我是否可以使用moment.js ？我想到的是，将日期AND时间保存在数据库中的单个unix时间戳中，并且在读取时只是将其解析为具有该特定时区的日期和时间。这种方法是否正确，还是应该将其保存为纯JavaScript日期？ mongoDB可以查询unix时间戳作为日期范围还是需要明确的Date对象？

My question is how should I best save (and subsequently retrieve) the date and time so that I can query it later in date ranges, should I maybe use moment.js? What I thought of, is saving the date AND time both in a single unix timestamp in the database, and when reading it just parse it into the date and time with that specific timezone. Is this approach correct, or should I save it as plain javascript Date? Can mongoDB query unix timestamps as date ranges or does it need plain Date objects?

谢谢。

推荐答案

可以找到您需要了解的一切。这里。亮点：

Everything you need to know about this can be found here. The highlights:

• 将日期作为JavaScript 日期对象存储。它们具有整数时间戳的所有查询优点，但您不需要将它们转换回 Date 对象来使用它们。

• Store dates as JavaScript Date objects. They have all the query advantages of integer timestamps, but you don't need to convert them back to Date objects to use them.

范围查询工作如下： Posts.find（{creation_date：{$ gte：startDate，$ lt：endDate}}）

您应该让服务器进行插入或使用 timesync 包以防止时钟偏移问题。

You should either have the server do the inserts or use the timesync package to prevent clock skew problems.

您可以使用 moment-timezone 格式化日期到不同的时区。例如 moment（date）.tz（America / New_York）。format（'l LT'）

You can use moment-timezone to format you dates to different timezones. e.g. moment(date).tz("America/New_York").format('l LT')

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