为什么我无法在 Heroku 控制台中打印（“放置”）？

发布于 2024-12-05 22:11:12 字数 740 浏览 0 评论 0原文

我有一个 Rails 应用程序部署到 heroku，需要在 heroku 控制台 中处理一些数据。为了帮助我做到这一点，我在 lib 目录中创建了 cmd.rb ，其中包含一些方法。这是它的样子：

class Cmd
  def self.hello
    puts "Hello World"
  end

  def self.create_member
    # real code with multiple "puts" statements here
  end
end

这是当我尝试在 heroku 控制台中运行它时得到的结果：

$ heroku console
Ruby console for myapp.heroku.com
>> puts User.count
515
=> nil
>> 3.times {|i| puts i}
0
1
2
=> 3
>> require "#{Rails.root}/lib/cmd"
=> true
>> Cmd
=> Cmd
>> Cmd.hello
=> nil

上面明显缺少“Hello World”。现在，如果我在另一个终端窗口中执行此操作，我可以看到输出：

heroku logs --tail

但是该输出中有很多噪音，我希望能够逐步看到内容。

原文

I have a Rails app deployed to heroku and need to munge some data in heroku console. To help me do this I've created cmd.rb in my lib directory with some methods in it. Here's what it looks like:

class Cmd
  def self.hello
    puts "Hello World"
  end

  def self.create_member
    # real code with multiple "puts" statements here
  end
end

And here's what I get when I try to run this in heroku console:

$ heroku console
Ruby console for myapp.heroku.com
>> puts User.count
515
=> nil
>> 3.times {|i| puts i}
0
1
2
=> 3
>> require "#{Rails.root}/lib/cmd"
=> true
>> Cmd
=> Cmd
>> Cmd.hello
=> nil

There's a notable lack of "Hello World" in the above. Now I can see the output if I do this in another terminal window: