Simple Ruby CRUD Movies

CRUD.rb

movies = {
	Memento: 3,
	Primer: 4,
	Ishtar: 1
}

puts "What would you like to do?"
puts "-- Type 'add' to add a movie."
puts "-- Type 'update' to update a movie."
puts "-- Type 'display' to display all movies."
puts "-- Type 'delete' to delete a movie."

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's the rating? (Type a number 0 to 4.)"
		rating = gets.chomp
		movies[title.to_sym] = rating.to_i
		puts "#{title} has been added with a rating of #{rating}."
	else
		puts "That movie already exists! Its rating is #{movies[title.to_sym]}."
	end
when 'update'
	puts "What movie do you want to update?"
	title = gets.chomp
	if movies[title.to_sym].nil?
		puts "Movie not found!"
	else
		puts "What's the new rating? (Type a number 0 to 4.)"
		rating = gets.chomp
		movies[title.to_sym] = rating.to_i
		puts "#{title} has been updated with new rating of #{rating}."
	end
when 'display'
	movies.each do |movie, rating|
		puts "#{movie}: #{rating}"
	end
when 'delete'
	puts "What movie do you want to delete?"
	title = gets.chomp
	if movies[title.to_sym].nil?
		puts "Movie not found!"
	else
		movies.delete(title.to_sym)
		puts "#{title} has been removed."
	end
else
	puts "Sorry, I didn't understand you."
end