Reading a example Ruby PORO class about til HOT 1 OPEN

Then let extract the usage of attr_accessor into a smaller example:

class TardisMotoForm
  attr_accessor :user, :params

  def save(attributes = {}, user = nil)
    @user = user
    @params = attributes

    user.errors.empty?
  end
end

Here we have three user text:
:user: define user attribute of the class, which can be access from the outside world.
@user: for assign user into attribute :user as define in attr_accessor.
user: method params will assign to instance variable @user.

For a class we can have these kinds of attribute:

• attr_reader
• attr_writer
• attr_accessor

References:

• https://stackoverflow.com/questions/5046831/why-use-rubys-attr-accessor-attr-reader-and-attr-writer

from til.