before_filter :set_site
after_filter do |c|
  c.class.page_cache_directory = c.site.directory_for(:cache)
end

attr_reader :site

private
  def set_site
    # Redirect to non-www address before we even hit the database!
    if request.subdomains.first == "www"
      if request.subdomains == ["www"]
        redirect_to "#{request.protocol}#{request.domain}#{request.port_string}#{request.path}"
      else
        subdomains = request.subdomains.shift.join(".")
        subdomains << "." unless subdomains.blank?
        redirect_to "#{request.protocol}#{subdomains}#{request.domain}#{request.port_string}#{request.path}"
      end
    else
      @site = Site.find_by_host(request.host)
    end
  end