openproject/app/models/costs_work_package_observer.rb

#-- copyright
# OpenProject Costs Plugin
#
# Copyright (C) 2009 - 2014 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#++

class CostsWorkPackageObserver < ActiveRecord::Observer
  observe :work_package

  def after_update(work_package)
    if work_package.project_id_changed?
      # TODO: This only works with the global cost_rates
      CostEntry
        .where(work_package_id: work_package.id)
        .update_all(project_id: work_package.project_id)
    end
  end
end