module ActiveSupport::Callbacks

to provide better debugging/logging.
This can be overridden in AS::Callback implementors in order
A hook invoked everytime a before callback is halted.

def halted_callback_hook(filter)
end

end
save
run_callbacks :save do

result of the block, or +true+ if no block is given.
If the callback chain was halted, returns +false+. Otherwise returns the

order.
the block (if given one), and then runs the after callbacks in reverse
Calls the before and around callbacks in the order they were set, yields

Runs the callbacks for the given event.

def run_callbacks(kind, &block)
  runner_name = self.class.__define_callbacks(kind, self)
  send(runner_name, &block)
end