gistfile1.rb

def show
    begin
      @company = Company.find params[:id].to_i
    rescue ActiveRecord::RecordNotFound
      #do nothing
    end

    if @company.present?
      @vendors = @company.vendors
    end

    respond_to do |format|
      format.js {render json: @vendors, content_type: 'text/json'}
    end
  end