def all_checkouts
    # here we are saving the current users books in a variable
    # and iterating over it and displaying each book
    books = @current_user.books
    books.each do |book|
      puts "Title: #{book[:title]}".colorize(:light_blue)
      puts "  Author: #{book[:author]}"
      puts "  Category: #{book[:category]}"
      puts "  Page Count: #{book[:page_count]}"
      puts "----------------"
    end
end