Method: ActiveSupport::Callbacks#run_callbacks

Defined in:
lib/activesupport-2.2.2/lib/active_support/callbacks.rb

#run_callbacks(kind, options = {}, &block) ⇒ Object

Runs all the callbacks defined for the given options.

If a block is given it will be called after each callback receiving as arguments:

* the result from the callback
* the object which has the callback

If the result from the block evaluates to false, the callback chain is stopped.

Example:

class Storage
  include ActiveSupport::Callbacks

  define_callbacks :before_save, :after_save
end

class ConfigStorage < Storage
  before_save :pass
  before_save :pass
  before_save :stop
  before_save :pass

  def pass
    puts "pass"
  end

  def stop
    puts "stop"
    return false
  end

  def save
    result = run_callbacks(:before_save) { |result, object| result == false }
    puts "- save" if result
  end
end

config = ConfigStorage.new
config.save

Output:

pass
pass
stop



276
277
278
 
# File 'lib/activesupport-2.2.2/lib/active_support/callbacks.rb', line 276

def run_callbacks(kind, options = {}, &block)
  self.class.send("#{kind}_callback_chain").run(self, options, &block)
end