Question

I just finished the Ruby essential Training course
I want to know how to write a very simple script for Restaurant Finder
using the command line only if possible?

Features needed:
User asked to input 1- restaurant name 2- restaurant type 3- restaurant
average price

user gets response list of the restaurants (nothing will be saved on
file) only in the memory during the session.

also how can i let the user shows the list of added restaurants?

I want to make it as simple as possible so i can understand the language
in a way that i missed it by the Lynda.com instructor.
Once this instructor reached the actual script building, he started
modifying it and write lots of speedy code that confused me and made me
almost thing like it is PHP not Ruby Video training I’m watching.

I know how to create classes and methods and using array hashes etc…
Want basic simple start to try myself how to write simple programs
without using files to store anything

after that i will move to the next level.

Thanks.

Answer 1

I am a newbie in Ruby too, but this is my simple implementation:

 class Restaurant
  attr_accessor :name, :type, :avg_price
   def initialize(name, type, avg_price)
     @name = name
     @type = type
     @avg_price = Float(avg_price)
   end   
 end

 class RestaurantsList < Array
  def read_from_keyboard
    print "Restaurant name: "
    name = gets.chomp
    print "Restaurant type: "
    type = gets.chomp
    print "Restaurant average price: "
    avg_price = gets.chomp
    self << Restaurant.new( name, type, avg_price )
  end
  def print_list
    puts sprintf("%17s %15s %s", "Name |", "Type |", "Avg price |")
    self.each { |e|  puts sprintf("%15s |%14s |%10d |", e.name, e.type, e.avg_price)}    
  end
 end

restaurants_list = RestaurantsList.new
loop do
  print "1 - add restaurant, 2 - print list, 3 - exit : "
  answer = Integer(gets.chomp)
  case answer
  when 1
    restaurants_list.read_from_keyboard
  when 2
    restaurants_list.print_list
  when 3
    break    
  end    
end