如何按插入时间对Meteor集合进行排序? [英] How can I sort a Meteor collection by time of insertion?

问题描述

我正在使用Meteor进行第一个项目，并且在排序时遇到了一些困难.

I am working on my first project using Meteor, and am having some difficulty with sorting.

我有一个表单，用户可以输入格言，然后将其显示在列表中.当前，最近的格言自动显示在列表的底部.有没有一种简便的方法可以将最新的信息显示在列表的顶部?

I have a form where users enter aphorisms that are then displayed in a list. Currently the most recent aphorisms automatically display at the bottom of the list. Is there an easy way to have the most recent appear at the top of the list instead?

我尝试过:

   Template.list.aphorisms = function () {
    return Aphorisms.find({}, {sort: {$natural:1}});
};

很困惑，因为Meteor文档没有很多示例.

And am stumped because the Meteor docs don't have many examples.

推荐答案

假定date_created为有效日期格式以及时间戳，则应使用Date.parse() javascript函数插入date_created的解析值，它给出了1970年1月1日到date_created中包含的日期值之间的毫秒数.

Assuming that the date_created is in a valid date format along with the timestamp, You should insert the parsed value of date_created using Date.parse() javascript function, which gives the number of milliseconds between January 1, 1970 and date value contained in date_created.

因此，最近添加的记录包含的date_created值将比在其之前插入的记录更大.

As a result of that, the most recently added record will contain greater value of date_created than the record inserted before it.

现在，在获取记录时，按date_created参数的降序对光标进行排序:

Now when fetching the records, sort the cursor in descending order of the date_created parameter as:

 Aphorisms.find({}, {sort: {date_created: -1}});

这会将记录从新到旧进行排序.

This will sort records from newer to older.

希望这会有所帮助.

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