module Listings
  # = Helpers
  module ActionViewExtensions
    def render_listing(key)
      params_for_listing = {:listing => key}.merge(params).with_indifferent_access
      listing = prepare_listing(params_for_listing, self)
      render :partial => 'listings/index', :locals => { :listing => listing }
    end

    def prepare_listing(params, view_context)
      listing_class = "#{params[:listing]}_listing".classify.constantize
      listing_class.new.tap do |listing|
        listing.view_context = view_context
        listing.query_items(params)
      end
    end
  end
end