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 Ruby Objects and Classes Build a Bank Account Class Printing The BankAccount

Joshua Horwitz
Joshua Horwitz
2,384 Points

I'm not sure what is going wrong here, everything else has been going great but I can't get this to_s to work at all.

I'm not sure why I am having so much trouble with this, when it seems as though it is just printing up 2 different instance variables.

bank_account.rb
class BankAccount
  attr_reader :name

  def initialize(name)
    @name = name
    @transactions = []
    @balance = 0
    add_transaction("Beginning Balance", 0)
  end

  def balance
    @transactions.each do |transaction|
      @balance += transaction[:amount]
    end
    return @balance
  end

  def debit(description, amount)
    add_transaction(description, -amount)
  end

  def credit(description, amount)
    add_transaction(description, amount)
  end

  def add_transaction(description, amount)
    @transactions.push(description: description, amount: amount)
  end

  def to_s
    puts "Name: #{@name}, Balance: #{BankAccount.balance}"
  end

end

1 Answer

Move the Balance = 0 underneath the balance method. Also, delete the "@" sign in front of the balance variable. You use a "@" sign when a variable is an instance variable. The balance variable is a local variable. Also, you're not returning the balance at the end of the balance method. Delete "return" so it only says "balance".

Next, instead of using "put" on the to_s method, use "return". You're not writing anything this time, you're returning the value. And lastly, to display the balance, just write out "Balance: #{balance}". You don't need to write the class with it.

If you want me to show you an example, just ask what you don't understand and I'll try to show you what I mean.