openproject/lib/api/decorators/collection.rb

#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2014 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.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 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.
#++

require 'roar/decorator'
require 'roar/representer/json/hal'

module API
  module Decorators
    class Collection < Roar::Decorator
      include Roar::Representer::JSON::HAL
      include Roar::Representer::Feature::Hypermedia
      include OpenProject::StaticRouting::UrlHelpers

      attr_reader :current_user, :as

      def initialize(models, current_user: nil, as: nil)
        @current_user = current_user
        @as = as.to_s.camelize(:lower)
        super(models)
      end

      as_strategy = API::Utilities::CamelCasingStrategy.new

      property :total, as: :_total, exec_context: :decorator

      def total
        represented.first.model.class.count
      end
    end
  end
end