Access Active Record Object Attributes in Rails Model

Question

I have a model with the following associations:

class Car < ActiveRecord::Base
  belongs_to :transportation_vehicle
  belongs_to :owner
  has_many :parts

  def scrap(buyer, part)
  ...
  end
end

How would I access owner and parts in the scrap method?

Jordan Running · Accepted Answer · 2010-07-26 21:46:23Z

1

owner or self.owner.

answered Jul 26, 2010 at 21:46

Jordan Running

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4 Comments

Tian Over a year ago

thanks Jordan. Do I need the @? I'd imagine owner would be an instance variable rather than a class variable.

Tian Over a year ago

to answer my own follow up, no need for @

Jordan Running Over a year ago

"owner" is a method, in fact. Like many of Rails features, I believe it's generated on the fly using method_missing.

niels Over a year ago

As an aside: in ruby, class variables have two @'s(@@variable), instance variables one (@variable) and things without can be either local variables or methods (which can be confusing at first, but once you get used to it it really is quite handy).

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