Ruby - 创建gem：使用更新的gem内容重新加载控制台 [英] Ruby - create gem: reload console with updated gem content

问题描述

根据这篇文章，我们可以测试通过将这些行添加到我们的rakefile中：

 任务：console do 
 require'irb'
需要'irb / completion'
需要'my_gem'＃你知道该怎么做。 
 ARGV.clear 
 IRB.start 
 end 
  

除了每当对宝石进行更改时，我都需要 exit 并重新运行 rake console 以获取代码已更新。作为创建/调试工具真的不方便......

有没有办法编写一个自定义的方法，它可以用作真棒从Rails中重载！方法？

bash脚本不会工作，因为第一个命令在Ruby控制台中，我宁愿有一个100％的红宝石解决方案。

谢谢！

解决方案

可以使用 $ LOADED_FEATURES 全局查找您的gem组件并使用 load 命令重新加载它们（使用 require 不会工作，因为它会跳过Ruby已经处理过的项目）：



  task：console do 
 require'irb'
 require'irb / completion'
 require'my_gem'＃你知道该怎么做。 
 
 def重新加载！ 
＃这里也改变'my_gem'：
 files = $ LOADED_FEATURES.select {| feat | feat =〜/ \ / my_gem \ //} 
 files.each {| file |加载文件} 
结束
 
 ARGV.clear 
 IRB.start 
结束
  

请注意，如果您要编写本机扩展，则必须将其排除，并且您需要编译步骤，并且如果它们发生更改，则无论如何都要退出/重新启动。 / p>


According to this article, we can test around our gem code by adding those lines to our rakefile:

task :console do
  require 'irb'
  require 'irb/completion'
  require 'my_gem' # You know what to do.
  ARGV.clear
  IRB.start
end

It works really well, except that whenever a change is made to the gem, I need to exit and rerun rake console to get the code updated. It is really not convenient as a creation/debugging tool ...

Is there a way to write a custom method that would act as the awesome reload! method from Rails?

A bash script won't work as the first command is in the Ruby console, and I'd rather have a 100% ruby solution.

Thanks!

解决方案

You can use the $LOADED_FEATURES global to find the components of your gem and re-load them using the load command (using require won't work, as it skips items that Ruby has already processed):

task :console do
  require 'irb'
  require 'irb/completion'
  require 'my_gem' # You know what to do.

  def reload!
    # Change 'my_gem' here too:
    files = $LOADED_FEATURES.select { |feat| feat =~ /\/my_gem\// }
    files.each { |file| load file }
  end

  ARGV.clear
  IRB.start
end

Note this will fail if you are writing native extensions, you'll have to exclude them, and you'll want a compile step and to exit/re-start anyway if they change.

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