OpenProject is the leading open source project management software.
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openproject/app/models/work_package/ancestors.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::Ancestors
extend ActiveSupport::Concern
included do
attr_accessor :work_package_ancestors
##
# Retrieve stored eager loaded ancestors
# or use awesome_nested_set#ancestors reduced by visibility
def visible_ancestors(user)
if work_package_ancestors.nil?
WorkPackage.visible(user).merge(ancestors)
else
work_package_ancestors
end
end
end
class_methods do
def aggregate_ancestors(work_package_ids, user)
::WorkPackage::Ancestors::Aggregator.new(work_package_ids, user).results
end
end
##
# Aggregate ancestor data for the given work package IDs.
# Ancestors visible to the given user are returned, grouped by each input ID.
class Aggregator
attr_accessor :user, :ids
def initialize(work_package_ids, user)
@user = user
@ids = work_package_ids
end
def results
with_work_package_ancestors.group_by(&:leaf_id)
end
private
def with_work_package_ancestors
query = join_ancestors(wp_table)
WorkPackage.joins(query.join_sources)
.select("#{wp_table.name}.id AS leaf_id")
.select('ancestors.*')
.order('ancestors.lft ASC')
end
def join_ancestors(select)
select
.join(wp_ancestors)
.on(ancestors_condition)
end
def ancestors_condition
nested_set_root_condition
.and(allowed_to_view_work_packages)
.and(nested_set_lft_condition)
.and(nested_set_rgt_condition)
.and(in_given_work_packages)
end
def in_given_work_packages
wp_table[:id].in(ids)
end
def allowed_to_view_work_packages
wp_ancestors[:project_id].in(
Project.allowed_to(user, :view_work_packages).select(:id).arel
)
end
def nested_set_root_condition
wp_ancestors[:root_id].eq(wp_table[:root_id])
end
def nested_set_lft_condition
wp_ancestors[:lft].lt(wp_table[:lft])
end
def nested_set_rgt_condition
wp_ancestors[:rgt].gt(wp_table[:rgt])
end
def wp_table
@wp_table ||= WorkPackage.arel_table
end
def wp_ancestors
@wp_ancestors ||= wp_table.alias('ancestors')
end
end
end