Question

Suppose I have a Post model and I’d like to run a method when it’s saved

in post.rb I do:

:before_save some_method_on_post

def some_method_on_post
  # Do something here
end

My question is, how do I refer to the current instantiated Post object inside of the method?

Edit: so to clarify suppose I wanted to do this:

def some_method_on_post
  post.some_property = foo
end

Do I refer to post as self?

Answer 1

Yes.

When using an attribute setting method, you refer to self as in method

def self.attribute_name=(value)
  @attribute_name = value
end

As a shortcut convenience, when you have a method that retrieves but does not set the object (so a getter), you can omit the self, e.g.

def attribute_name
  @the_value
end