Module: ActiveModel::Observing

Extended by:
ActiveSupport::Concern
Included in:
ActiveRecord::Base
Defined in:
lib/rails/observers/active_model/observing.rb

Overview

Active Model Observers Activation

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#notify_observers(method, *extra_args) ⇒ Object

Notify a change to the list of observers.

class Foo
  include ActiveModel::Observing

  attr_accessor :status
end

class FooObserver < ActiveModel::Observer
  def on_spec(record, *args)
    record.status = true
  end
end

Foo.observers = FooObserver
Foo.instantiate_observers # => [FooObserver]

foo = Foo.new
foo.status = false
foo.notify_observers(:on_spec)
foo.status # => true

See ActiveModel::Observing::ClassMethods.notify_observers for more information.



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# File 'lib/rails/observers/active_model/observing.rb', line 227

def notify_observers(method, *extra_args)
  self.class.notify_observers(method, self, *extra_args)
end