Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Ruby

Joshua Goss
Joshua Goss
5,714 Points
Posted by Joshua Goss
Joshua Goss
5,714 Points

Not sure how the 'push' method could be undefined on line 18 

  contact_list = []

def ask(question, kind="string")
  print question + " "
  answer = gets.chomp
  answer = answer.to_i if kind == "number"
  return answer
end

def add_contact
  contact = { "name" => " ", "phone_numbers" => []}
  contact ["name"] = ask ("What is the person's name?")
  answer = " "
  while answer != "n"
    answer = ask ("Do you want to leave a phone number")
    if answer == "y"
      phone = ask ("Enter a phone number.")
      contact ["phone_numbers".push(phone)]
        end
    end

  return contact
end

answer = "" 
  while answer != "n"
    contact_list.push (add_contact())
   answer = ask("Add another?")
end
puts contact_list

output:

What is the person's name? J                                                                                             
Do you want to leave a phone number y                                                                                    
Enter a phone number. 123                                                                                                
Traceback (most recent call last):                                                                                       
        1: from contact_list.rb:27:in `<main>'                                                                           
contact_list.rb:18:in `add_contact': undefined method `push' for "phone_numbers":String (NoMethodError)                  
treehouse:~/workspace$ ruby contact_list.rb

Error:

Traceback (most recent call last):                                                                                       
        1: from contact_list.rb:27:in `<main>'                                                                           
contact_list.rb:18:in `add_contact': undefined method `push' for "phone_numbers":String (NoMethodError)

2 Answers

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 28,720 Points
Jeff Muday
Jeff Muday
Treehouse Moderator 28,720 Points

Nice job coming up with the code. You almost got it!

Change the slight error when you are "pushing" phone into the phone_number array. See below.

contact_list = []

def ask(question, kind="string")
  print question + " "
  answer = gets.chomp
  answer = answer.to_i if kind == "number"
  return answer
end

def add_contact
  contact = { "name" => " ", "phone_numbers" => []}
  contact ["name"] = ask ("What is the person's name?")
  answer = " "
  while answer != "n"
    answer = ask ("Do you want to leave a phone number")
    if answer == "y"
      phone = ask ("Enter a phone number.")

      # contact ["phone_numbers".push(phone)]
      contact["phone_numbers"].push(phone)
     end
    end

  return contact
end

answer = "" 
while answer != "n"
   contact_list.push (add_contact())
   answer = ask("Add another?")
end
puts contact_list
Joshua Goss
Joshua Goss
5,714 Points
Joshua Goss
Joshua Goss
5,714 Points

I see! "Push" is not something that works because the push method cannot be used on a string so the declaration of the array ends at the String. Thank you Jeff :)