From: Michael Bowen <lists@...>
Date: 2013-05-09T09:39:52+09:00
Subject: Looping back to CRUD interface

How can I return the program back to the CRUD menu if the user wants to
take another action? I thought about using returns, but I'm not quite
sure how that would work.

#movie hash
movies = { superbad: 4,
miami_vice: 0,
juno: 0
}
#Get CRUD input
puts "Do you want to add, update, display, delete or exit?"
choice = gets.chomp.downcase

#case since there are many conditions/options
case choice
when 'add'
    puts "Give me a movie title"
    title = gets.chomp
    if movies[title.to_sym].nil?
        puts "Now rate it"
        rating = gets.chomp
        movies[title.to_sym] = rating.to_i
    else
        puts "That movie already exists"
    end
when "update"
    puts "Give me the title."
    title = gets.chomp
    if movies[title.to_sym].nil?
        puts "That movie does not exist"
    else
        puts "What is the new rating?"
        rating = gets.chomp
        movies[title.to_sym] = rating.to_i
        puts "#{rating} is the new rating!"
    end
when "display"
    movies.each { |x , y| puts "#{x}: #{y}"}
when "delete"
    puts "What is the title you want to remove?!"
    title = gets.chomp
    if movies[title.to_sym].nil?
        puts "Error, movie is not listed."
    else
        movies.delete(title.to_sym)
        puts "#{title} has been removed"
    end
when 'exit'
  return 0
else
    puts "Error!"
end


#how to make it loop back to beginning?

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