My code below runs ok, there is no error message. However, when I run it for testing it does not change the movies hash. For example, first I run “add” a new movie and then I run “display” it does not display the movie i have just added. Similar to delete, update. Please show me why? thank you in advance.
def movie_list
movies = {
forest_gum: 4,
cast_away: 4,
king_kong: 4.5,
fast_n_furous: 5,
star_war: 3
}
puts "What do you want to do?"
puts "__ Type ‘add’ if you want to add new movie"
puts "__ Type ‘update’ if you want to update rating"
puts "__ Type ‘display’ if you want to display movies vs ratings"
puts "__ Type ‘delete’ if you want to delete movie"
choice = gets.chomp
choice.downcase!
case choice
when "add"
puts "Please input the name of new movie"
title = gets.chomp
if movies[title.to_sym]==nil
puts "Please input the rating of new movie"
rating = gets.chomp
movies[title.to_sym]= rating.to_i
puts "New movie added!"
else
puts "This movie is existed in list"
end
when "update"
puts "Please input the name of movie to be updated"
title = gets.chomp
if movies[title.to_sym]==nil
puts "The movie is not existed in list"
else
puts "Please input the new rating of the movie"
rating = gets.chomp
movies[title.to_sym]= rating.to_i
puts "The rating of movie is updated"
end
when "display"
movies.each {
|movie, rating| puts “#{movie}: #{rating}”
}
when "delete"
puts "Please input the name of movie to be delete"
title = gets.chomp
if movies[title.to_sym]==nil
puts "The movie is not existed in list"
else
movies.delete(title.to_sym)
puts "The movie is deleted"
end
else
puts "Error"
end
end
movie_list
continue = true
while continue do
answer= "Y"
while answer == "Y"
puts "Do you want to continue? Y/N"
answer = gets.chomp
answer.upcase!
if answer == "N"
continue = false
break
elsif answer == "Y"
movie_list
#break
else
puts "Please input Y or N"
end
end
end