通过终端在 Ruby 中进行多项选择测验

Question

有没有办法在 Ruby 中进行编码，以便终端显示两个选项，用户需要使用箭头键选择并使用 Enter 确认？

伪代码：

p "What is the capital of Scotland? 
user_select = gets.chomp
p "Edinburgh" 
p "Glasgow"
if user_select == "Edinburgh" etc etc

我想知道这是否可以在用户无需输入答案的情况下实现。终端可以像 GUI 一样工作吗？

Answer 1

或者，您可以使用 TTY::Prompt。它会让你使用箭头键。

代码示例

require 'tty-prompt'

prompt = TTY::Prompt.new
greeting = 'What is the capital of Scotland?'
choices = %w(Edinburgh Glasgow)
answer = prompt.select(greeting, choices)
'do something' if answer == choices[0]

结果

$ ruby quiz.rb

What is the capital of Scotland? (Use arrow keys, press Enter to select)
‣ Edinburgh
  Glasgow

Answer 2

您可以使用Highline 之类的东西，尽管这不会让您使用箭头键：

→ ruby test.rb
1. Edinburgh
2. Glasgow
What is the capital of Scotland?
→ 1
Correct! 

代码（仅供参考）：

require 'highline'

cli = HighLine.new

cli.choose do |menu|
  menu.prompt = "What is the capital of Scotland?"
  menu.choice("Edinburgh") { cli.say "Correct!" }
  menu.choice("Glasgow") { cli.say "Wrong!" }
end

如需更多 GUI，请尝试使用 MRDialog 之类的内容。

例子：

require 'mrdialog'

dialog = MRDialog.new
dialog.clear = true
dialog.title = "Quiz"

question = "What is the capital of Scotland?"
answers = [['E', 'Edinburg'], ['G', 'Glasgow']]

height = 0
width = 0
menu_height = 2

selected_item = dialog.menu(question, answers, height, width, menu_height)

puts "Selected item: #{selected_item}"

结果：