def disabled_additive
     @additive = @purchase.additives.find(params[:id])
     @additive.update_attributes(:situation => false) rescue ""

     respond_to do |format|
       format.html { redirect_to("/admin/biddings/#{@purchase.bidding_id}/purchases/#{@purchase.id}/additives") }
       format.xml  { head :ok }
     end
   end



ActiveRecord::RecordNotFound in Admin::additivesController#disabled_additive

Couldn't find Additive without an ID