openproject/app/services/authorization/user_roles_query.rb

#-- 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.
#++

class Authorization::UserRolesQuery < Authorization::AbstractUserQuery
  self.model = Role
  self.base_table = users_table

  def self.query(*args)
    arel = transformed_query(*args)

    model.where(roles_table[:id].in(arel))
  end

  transformations.register :all, :roles_join do |statement|
    statement.outer_join(roles_table)
             .on(roles_member_roles_join)
  end

  transformations.register :all, :project do |statement|
    statement.project(roles_table[:id])
  end

  def self.roles_member_roles_join
    roles_table[:id].eq(member_roles_table[:role_id])
  end
end