如何在构建时在Jekyll页面中插入最后更新的时间戳? [英] How to insert the last updated time-stamp in Jekyll page at build time?

问题描述

我想在Jekyll构建时间为每个帖子自动插入最后更新的时间戳(不是页面的date变量)，如何实现?我想我必须声明一个变量，但是我不确定如何将值赋给该变量.

I would like to automatically insert a last updated timestamp (Not the date variable for the page) for each post at Jekyll build time, how to achieve that? I think I have to declare a variable but I am not sure how to assign the value to that variable.

例如，有时候我更新一个旧帖子，除了显示发布日期，我还想显示最近的更新日期.

For example, some time I update an old post, beside showing the post date, I also want to show the last update date.

我尝试了{{Time.now}}，但似乎不起作用.

I have tried {{Time.now}} but seems does not work.

推荐答案

唯一具有modified_time的集合是site.static_files.在我们的案例中不是那么有用.

The only collection that has a modified_time is site.static_files. Not so useful in our case.

在Jekyll网站上获取帖子的last-modified-date的一种方法是使用钩子(文档)

One way to get the last-modified-date for posts in your Jekyll site is to use a hook (documentation).

_plugins/hook-add-last-modified-date.rb

Jekyll::Hooks.register :posts, :pre_render do |post|

  # get the current post last modified time
  modification_time = File.mtime( post.path )

  # inject modification_time in post's datas.
  post.data['last-modified-date'] = modification_time

end

它现在在您的帖子中显示为:{{ page.last-modified-date }}. 您可以使用日期过滤器(如{{ page.last-modified-date | date: '%B %d, %Y' }})格式化该日期.请参阅艾伦·史密斯(Alan W. Smith)关于日期Jekill Liquid日期格式设置主题的出色文章.

It's now available in your posts as : {{ page.last-modified-date }}. And you can format this date with the a date filter like {{ page.last-modified-date | date: '%B %d, %Y' }}. See the Alan W. Smith excellent article on date Jekill Liquid date formating topic.

重要通知:挂钩在Github页面上不起作用.

Important notice : hooks are not working on Github pages.

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