Simple CRUD app that stores info in a Hash. From lesson 6 of Code Academy Ruby Track.

movies.rb

movies = {
    Iron_Man: 3,
    Fast_Five: 4,
    Sharknado: 5
}

puts 'Do you want to ADD, UPDATE, DISPLAY, or DELETE?'
choice = gets.chomp.downcase

case choice

when 'add'

  puts 'What movie do you want to add?'
  title = gets.chomp
  
  if movies[title.to_sym].nil?
    puts "What is the rating of #{title}?"
    rating = gets.chomp
    movies[title.to_sym] = rating.to_i
    puts "#{title} with rating of #{rating} was added."
  else
    puts "#{title} already entered."
  end
  
when 'update'

  puts 'What movie do you want to update?'
  title = gets.chomp
  
  if movies[title.to_sym].nil?
    puts "#{title} does not exist."
  else
    puts "What is the rating of #{title}?"
    rating = gets.chomp
    movies[title.to_sym] = rating.to_i
    puts "#{title} was updated with a rating of #{rating}."
  end
  
when 'display'

  movies.each { |movie,rating| puts "#{movie}: #{rating}" }
  
when 'delete'
  
  puts 'What movie do you want to delete?'
  title = gets.chomp
  
  if movies[title.to_sym].nil?
    puts "#{title} does not exist."
  else
    movies.delete(title)
  end
      
else
  puts 'You messed.'
end