products.rb

    includes   = Product.includes_from_params(params)
    conditions = Product.conditions_from_params(params)
    
    @product_count = shop.products.count(:all, :include => includes, :conditions => conditions)

    @products = shop.products.find(:all, 
      :limit => page_limit, 
      :offset => page_offset,
      :conditions => conditions,
      :order => 'products.title, products.vendor',
      :include => includes
    )
    
    @product_pages = Paginator.new(self, @product_count, page_limit, current_page)
              
    respond_to do |format|
    
      @products.preload_associations :image, :images, :variants

      format.html do 
        @vendors        = shop.products.vendors
        @product_types  = shop.products.types
        
        render :action => 'list' 
      end
      
      format.xml do
        @products.preload_associations :options
        render :xml => @products
      end
      
      format.json do
        @products.preload_associations :options
        render :json => {'products' => @products}
      end
      
      format.csv  do
        @products.preload_associations :options
        render_attachment('products.csv', Mime::CSV, CsvProductImporterExporter.new(shop).export_csv(@products))
      end
    end    
  end