CODEWITHSUNDEEP
rubyclassinstance-variables
chrabyrd
chrabyrd

Reputation: 323

In Ruby, why am I calling an instance variable from another class as a method?

I'm creating a basic tic-tac-toe game to keep up my "Ruby chops." In the Game class, I've only gotten the generate_board method to work using the code below. I can't seem to access the @board instance variable directly. Can anyone explain why I'm having to call it as a method, and how to avoid this? Thank you!

class Board
  def initialize
    @board = (1..9).to_a
  end
end

class Game
  attr_accessor :board

  def initialize
    generate_board
  end

  def generate_board
    new_board = Board.new
    @board = new_board.board
  end
end

Upvotes: 0

Views: 66

Answers (2)

Gupta
Gupta

Reputation: 10398

On following Sagarpandya Answer You could write your code like this.

class Board
  def initialize
    @board = (1..9).to_a
  end
end

class Game
  attr_accessor :board

  def initialize
    generate_board
  end

  def generate_board
     Board.new
  end
end
p Game.new.generate_board

Upvotes: 0

Sagar Pandya
Sagar Pandya

Reputation: 9508

The instance variable @board from the Board class is only accessible to other methods within the Board class. Since your method generate_board is outside of the Board class and within a different class, the @board instance variable from the Board class isn't accessible to the method in the Game class.

This in general is how instance variables work.

Upvotes: 1

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