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 Adding Transactions

Devin Scheu
Devin Scheu
66,191 Points
Posted by Devin Scheu
Devin Scheu
66,191 Points

Ruby Help

Question: Now that the add_transaction method exists, make the add_transaction method append a hash to the @transactions array. The hash should have the keys description and amount, as symbols, and values that match the arguments to the method.

Code:

bank_account.rb 
class BankAccount
  attr_reader :name

  def initialize(name)
    @name = name
    @transactions = []
  end

  def add_transaction(description, amount)
    @transactions.append({"description" => description, "amount" => amount})
  end

end

2 Answers

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,723 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,723 Points

hi Devin

First you need to change the hash in the add_transaction method so that the keys are symbols, not strings:

{:description => description, :amount => amount}

Also, I looked at the ruby docs and couldn't find an append method for Array, so you'll need to use the push method or the << operator:

@transactions.push({:description => description, :amount => amount})

or

@transactions << {:description => description, :amount => amount}
Tiru Otilia
Tiru Otilia
2,274 Points
Tiru Otilia
Tiru Otilia
2,274 Points 
class BankAccount
  attr_reader :name

  def initialize(name)
    @name = name
    @transactions = []
  end
  def add_transaction(description,amount)
    @transactions.push(description: description, amount: amount)
  end
end