测试当前目录是否在Rails项目(bash)中 [英] Test if the current directory is inside a Rails project (bash)

问题描述

是否有一种简单的方法来测试当前目录是否在rails项目中?显然，为了使用rails子命令(generate，scaffold等)，Rails本身对此进行了测试.因此，大概有一种简单的方法可以对此进行测试.

Is there an easy way to test if the current directory is inside a rails project? Clearly Rails itself tests this in order to use the rails subcommands (generate, scaffold, etc.), so presumably there's a straight-forward way to test this.

我正在寻找与您测试是否类似的方式你在一个Git仓库中.

推荐答案

在进一步研究后，我得以深入研究 rails 命令本身，并基于部分 railties解决方案 gem(< railties>/lib/rails/script_rails_loader.rb ):

Upon further investigation, I was able to dig into the rails command itself and based a solution on part of the railties gem (<railties>/lib/rails/script_rails_loader.rb):

#!/usr/bin/env ruby

require 'pathname'

SCRIPT_RAILS = File.join('script', 'rails')

def self.in_rails_application?
  File.exists?(SCRIPT_RAILS)
end

def self.in_rails_application_subdirectory?(path = Pathname.new(Dir.pwd))
  File.exists?(File.join(path, SCRIPT_RAILS)) || !path.root? && in_rails_application_subdirectory?(path.parent)
end

if in_rails_application? || in_rails_application_subdirectory?
  exit(0)
else
  exit(1)
end

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