项目目录的相对路径 [英] Relative path to your project directory

问题描述

在我的 Ruby 项目中，我使用了很多东西，比如在几个远程机器上移动和编辑文件，我真的需要一些东西，比如我的根项目目录的相对路径.我有很多处理文件夹，用于多种方法.

In my Ruby project I am using a mess of things like moving and editing files on several remote boxes and I really need something like a relative path to my root project directory. I have many processing folders which are used in many methods.

现在我对路径进行了硬编码，但这让我很不高兴.

Right now I have paths hardcoded, but that makes me unhappy.

推荐答案

你可以通过这个获取当前目录(当前文件的目录)

You can get current directory (directory of current file) with this

File.dirname(__FILE__)

然后你可以用相对路径加入它

You can then join it with relative path to the root

File.join(File.dirname(__FILE__), '../../') # add proper number of ..

或者您可以使用expand_path将相对路径转换为绝对路径.

Or you can use expand_path to convert relative path to absolute.

ENV['BUNDLE_GEMFILE'] = File.expand_path('../../Gemfile', File.dirname(__FILE__))

或者您可以计算两个目录之间的相对路径.

Or you can calculate relative path between two dirs.

require 'pathname'; 
puts Pathname.new('/').relative_path_from(Pathname.new('/some/child/dir/')).to_s
# => ../../..

这篇关于项目目录的相对路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！