OpenProject is the leading open source project management software.
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openproject/app/models/work_packages/derived_dates.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2020 the OpenProject GmbH
#
# 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 docs/COPYRIGHT.rdoc for more details.
#++
module WorkPackages::DerivedDates
# Returns the maximum of the dates of all descendants (start and due date)
# No visibility check is applied so a user will always see the maximum regardless of his permission.
#
# The value can stem from either eager loading the value via
# WorkPackage.include_derived_dates in which case the work package has a
# derived_start_date attribute or it is loaded on calling the method.
def derived_start_date
derived_date('derived_start_date')
end
# Returns the minimum of the dates of all descendants (start and due date)
# No visibility check is applied so a user will always see the minimum regardless of his permission.
#
# The value can stem from either eager loading the value via
# WorkPackage.include_derived_dates in which case the work package has a
# derived_due_date attribute or it is loaded on calling the method.
def derived_due_date
derived_date('derived_due_date')
end
def derived_start_date=(date)
compute_derived_dates
@derived_dates[0] = date
end
def derived_due_date=(date)
compute_derived_dates
@derived_dates[1] = date
end
def reload(*)
@derived_dates = nil
super
end
private
def derived_date(key)
if attributes.key?(key)
attributes[key]
else
compute_derived_dates[key]
end
end
def compute_derived_dates
@derived_dates ||= begin
attributes = %w[derived_start_date derived_due_date]
values = if persisted?
WorkPackage
.from(WorkPackage.include_derived_dates.where(id: self))
.pluck(*attributes.each { |a| Arel.sql(a) })
.first || []
else
[]
end
attributes
.zip(values)
.to_h
end
end
end