的Rails 3 ActiveRecord的遷移 - 的ActiveRecord :: StatementInvalid

Question

我得到一個奇怪的錯誤：

ActiveRecord::StatementInvalid in AdminController#edit_user 
NoMethodError: undefined method `empty?' for 663:Fixnum: SELECT privileges.*, ... 

In: app/controllers/admin_controller.rb:75:in `edit_user' 

這裏是有問題的行：

#line #75 from admin_controller.rb 
@privileges = Privilege.find_by_sql("SELECT privileges.*, vendors.name AS vendor_name FROM privileges LEFT JOIN vendors ON vendors.id = rivileges.vendor_id WHERE user_id = ? ORDER BY vendors.name", @user.id) 

我可以通過取出修復佔位符，但我不想這樣做：

@privileges = Privilege.find_by_sql("SELECT privileges.*, vendors.name AS vendor_name FROM privileges LEFT JOIN vendors ON vendors.id = privileges.vendor_id WHERE b2b_user_id = "+@user.id.to_s+" ORDER BY vendors.name") 

fin在Rails 3中，d_by_sql尚未被棄用，我可以將該查詢抽入數據庫。

我覺得奇怪的是，沒有電話「空」嗎？在我的admin_controller。這是一個內部調用通過Rails清空？

請指教。

謝謝

Answer 1

該語法在Rails 3.1中已被棄用。

你應該叫

@privileges = Privilege.find_by_sql ["SELECT privileges.*, vendors.name AS vendor_name FROM privileges LEFT JOIN vendors ON vendors.id = rivileges.vendor_id WHERE user_id = ? ORDER BY vendors.name", @user.id]