openproject/app/uploaders/file_uploader.rb

#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2015 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.
#++

module FileUploader
  def self.included(base)
    base.extend ClassMethods
  end

  def local_file
    file.to_file
  end

  def download_url
    file.is_path? ? file.path : file.url
  end

  def cache_dir
    self.class.cache_dir
  end

  module ClassMethods
    def cache_dir
      @cache_dir ||= begin
        tmp = Tempfile.new 'op_uploaded_files'
        path = Pathname(tmp)

        tmp.close! # delete temp file
        path.mkdir # create temp directory

        path.to_s
      end
    end
  end
end