如何在Ruby脚本中运行Rake任务？ [英] How do I run Rake tasks within a Ruby script?

问题描述

我有一个 Rakefile ，带有一个Rake任务，通常我会从命令行调用它：

I have a Rakefile with a Rake task that I would normally call from the command line:

rake blog:post Title

我想写一个Ruby脚本多次调用该Rake任务，但我看到的唯一解决方案是使用``（反引号）或 system 炮轰。

I'd like to write a Ruby script that calls that Rake task multiple times, but the only solution I see is shelling out using `` (backticks) or system.

执行此操作的正确方法是什么？

What's the right way to do this?

推荐答案

来自 timocracy.com ：

require 'rake'

def capture_stdout
  s = StringIO.new
  oldstdout = $stdout
  $stdout = s
  yield
  s.string
ensure
  $stdout = oldstdout
end

Rake.application.rake_require 'metric_fetcher', ['../../lib/tasks']
results = capture_stdout {Rake.application['metric_fetcher'].invoke}

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