orate and crate not being calculated

db_campaigns_controller.rb

def update
    respond_to do |format|
      @single_shoot = DbCampaign.find_by_id(params[:id])
      if @single_shoot.update(db_campaign_params)
        format.html { redirect_to @single_shoot, notice: 'Campaign was successfully updated.' }
        format.json { render :show, status: :ok, location: @single_shoot }
        calculate_kpi
      else
        format.html { render :edit }
        format.json { render json: @single_shoot.errors, status: :unprocessable_entity }
      end
    end
  end

  def calculate_kpi
    @single_shoot = DbCampaign.find_by_id(params[:id])
    turnover = (@single_shoot.payout * @single_shoot.result)
    cost = (@single_shoot.sent * @single_shoot.cpm) / 1000
    margin = (@single_shoot.turnover - @single_shoot.cost)
    ecpm = ((@single_shoot.turnover / @single_shoot.sent) * 1000)
    orate = (@single_shoot.unique_views / @single_shoot.sent) * 100
    crate = (@single_shoot.clicker / @single_shoot.sent) * 100

    @single_shoot.update_column(:turnover, turnover)
    @single_shoot.update_column(:cost, cost)
    @single_shoot.update_column(:margin, margin)
    @single_shoot.update_column(:ecpm, ecpm)
    @single_shoot.update_column(:orate, orate)
    @single_shoot.update_column(:crate, crate)
  end

def db_campaign_params
      params.fetch(:db_campaign, {}).permit(:id, :campaign_id, :name, :payout, :ecpm, :turnover, :cost, :margin, :result, :roi, :segment, :deal, :partner, :cpm, :sender, :gender, :scenario, :theme, :orate, :crate)
end