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Contents
module EnumStateMachine
module Integrations #:nodoc:
module ActiveModel
# Adds support for invoking callbacks on ActiveModel observers with more
# than one argument (e.g. the record *and* the state transition). By
# default, ActiveModel only supports passing the record into the
# callbacks.
#
# For example:
#
# class VehicleObserver < ActiveModel::Observer
# # The default behavior: only pass in the record
# def after_save(vehicle)
# end
#
# # Custom behavior: allow the transition to be passed in as well
# def after_transition(vehicle, transition)
# Audit.log(vehicle, transition)
# end
# end
module Observer
def update_with_transition(observer_update)
method = observer_update.method
send(method, *observer_update.args) if respond_to?(method)
end
end
end
end
end
ActiveModel::Observer.class_eval do
include EnumStateMachine::Integrations::ActiveModel::Observer
end if defined?(ActiveModel::Observer)
Version data entries
11 entries across 11 versions & 1 rubygems