OpenProject is the leading open source project management software.
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openproject/app/models/work_package/scheduling_rules.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2017 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.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2017 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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.
#
# See doc/COPYRIGHT.rdoc for more details.
#++
module WorkPackage::SchedulingRules
extend ActiveSupport::Concern
included do
# add class-methods (validations, scope) here
end
def reschedule_by(delta)
return if delta.zero?
if leaf?
# Avoid setting the dates if either is unset
return if (start_date.nil? || due_date.nil?)
# HACK: On some more deeply nested settings (not sure what causes it)
# the work package can already have been updated by one of the other after_save hooks.
# To prevent a stale object error, we reload the lock preemptively.
set_current_lock_version
current_buffer = soonest_start - start_date
max_allowed_delta = if current_buffer < delta
delta
else
current_buffer
end
self.start_date += max_allowed_delta
self.due_date += max_allowed_delta
save(validate: false)
else
leaves.each do |leaf|
# this depends on the "update_parent_attributes" after save hook
# updating the start/end date of each work package between leaf and self
leaf.reschedule_by(delta)
end
end
end
def reschedule_after(date)
return if date.nil?
if leaf?
if start_date.nil? || start_date < date
# HACK: On some more deeply nested settings (not sure what causes it)
# the work package can already have been updated by one of the other after_save hooks.
# To prevent a stale object error, we reload the lock preemptively.
set_current_lock_version
# order is important here as the calculation for duration factors in start and due date
self.due_date = date + duration - 1
self.start_date = date
save(validate: false)
end
else
leaves.each do |leaf|
# this depends on the "update_parent_attributes" after save hook
# updating the start/end date of each work package between leaf and self
leaf.reschedule_after(date)
end
end
end
# Returns the time scheduled for this work package.
#
# Example:
# Start Date: 2/26/09, Due Date: 3/04/09, duration => 7
# Start Date: 2/26/09, Due Date: 2/26/09, duration => 1
# Start Date: 2/26/09, Due Date: - , duration => 1
# Start Date: - , Due Date: 2/26/09, duration => 1
def duration
if start_date && due_date
due_date - start_date + 1
else
1
end
end
def set_current_lock_version
# Refrain from using reload(select: :lock_version) as this would cause unperisted attribute
# information to be lost.
self.lock_version = WorkPackage.where(id: id).pluck(:lock_version).first || 0
end
end