mongoid

    def increase_or_decrease_position position
      binding.pry
      old_position = position.to_i
      new_position = params[:package][:position].to_i
      if old_position > new_position
        @packages = Package.where(:type => params[:package][:type])
          .where(:is_actived => true)
          .where(:position.gte => new_position)
          .where(:position.lt => old_position).inc(position: 1)
      elsif new_position > old_position
        @packages = Package.where(:type => params[:package][:type])
          .where(:is_actived => true)
          .where(:position.lte => new_position)
          .where(:position.gt => old_position).inc(position: -1) 
      end 
    end