rosa-build/app/controllers/application_controller.rb

# coding: UTF-8
class ApplicationController < ActionController::Base
  protect_from_forgery

  layout :layout_by_resource

  before_filter :set_locale
  before_filter lambda { EventLog.current_controller = self },
                :only => [:create, :destroy, :open_id, :auto_build, :cancel, :publish, :change_visibility] # :update
  after_filter lambda { EventLog.current_controller = nil }

  helper_method :get_owner
  
  rescue_from CanCan::AccessDenied do |exception|
    redirect_to forbidden_url, :alert => t('flash.exception_message')#:alert => exception.message
  end
  
  protected

  def set_locale
    I18n.locale = extract_locale_from_request
  end

  def extract_locale_from_request
    get_user_locale || request.env['HTTP_ACCEPT_LANGUAGE'].to_sym || :en
  end

  def get_user_locale
    user_signed_in? ? current_user.language : nil
  end

  def get_owner
#      params['user_id'] && User.find_by_id(params['user_id']) ||
#      params['group_id'] && Group.find_by_id(params['group_id']) || current_user
    if self.class.method_defined? :parent
      if parent and (parent.is_a? User or parent.is_a? Group)
        return parent
      else
       return current_user
      end
    else
      params['user_id'] && User.find_by_id(params['user_id']) ||
      params['group_id'] && Group.find_by_id(params['group_id']) || current_user
    end
  end

  def layout_by_resource
    if devise_controller?
      "sessions"
    else
      "application"
    end
  end
end