gistfile1.rb

  def set_event
    pack = Pack.includes(:replays).find(params[:id])
    if !params[:event_id].nil? && !params[:event_id].empty?
      event = Event.find(params[:event_id])
      pack.replays.update_all(:event_id => event.id)
    else
      pack.replays.update_all(:event_id => nil)
    end

    redirect_to pack, :notice => "Event has been updated succesfully for all pack's replays."
  end


#  AREL (0.4ms)  UPDATE "replays" INNER JOIN "pack_games" ON "replays".id = "pack_games".replay_id SET "event_id" = 1 WHERE (("pack_games".pack_id = 25))
# PGError: ERROR:  syntax error at or near "INNER"