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Ruby Ruby Foundations Methods Class Methods

"NameError: undefined local variable or method 'first_name' for..."

When I try to run bank_account = BankAccount.find_for("Justin", "Smith") I keep getting NameError: undefined local variable or method 'first_name' for ...

I have been back over my bank_account.rb file to see if I can spot the error there, but it seems to me that I have correctly defined 'first_name'.

class BankAccount

  def self.create_for(first_name, last_name)
    @accounts ||= []
    @accounts << BankAccount.new(first_name, last_name)
  end

  def self.find_for(first_name, last_name)
    @accounts.find{|account| account.full_name == "#{first_name} #{last_name}"}
  end

  def initialize(first_name, last_name)
    @balance = 0
    @first_name = first_name
    @last_name = last_name
  end

  def full_name
    "#{first_name} #{last_name}"
  end

  def deposit(amount)
    @balance += amount
  end

  def withdraw(amount)
    @balance -= amount
  end
end

What am I missing?

1 Answer

Maciej Czuchnowski
Maciej Czuchnowski
36,440 Points

This method:

  def full_name
    "#{first_name} #{last_name}"
  end

uses local variables; they should be instance variables.

Thanks