如何在Rails上的ruby的XLS文件中編寫復雜的代碼

Question

index.xls.erb

<% @gd = GoodsDelivery.find_all_by_store_location_id(stores.id) %>
<% gd_qty = 0.00 %>
<% for goods_delivery in @gd %>
   <% gdl_qty = goods_delivery.goods_delivery_line_items.where(:product_id => prods.id).where(:customer_bill_id => nil).sum(:quantity) %>
   <% gd_qty = gd_qty + gdl_qty %><% end %>
   <td><%= gd_qty %></td>

由於某些問題，我在index.xls.erb文件中有這樣的代碼，我無法將其移至控制器中，但是在本地服務器中，由於Heroku是我的雲，因此它在正確運行，並給出如下錯誤

Error Messege :
Rack::Timeout::RequestTimeoutError: Request ran for longer than 29.989883911185302 seconds.: SELECT SUM("goods_receipt_line_items"."goods_receipt_quantity") AS sum_id FROM "goods_receipt_line_items" WHERE "goods_receipt_line_items"."goods_receipt_id" = 311 AND "goods_receipt_line_items"."product_id" = 133
/app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/connection_adapters/postgresql_adapter.rb:1153:in `async_exec' /app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/connection_adapters/postgresql_adapter.rb:1153:in `exec_no_cache' /app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/connection_adapters/postgresql_adapter

Answer 1

請求超時錯誤-看起來是由於數據庫運行緩慢所致。 嘗試在本地運行應用程序並連接到遠程數據庫-我想您也會收到超時。