Rails事務不會回滾

我有一個從xml文件客戶加載的方法。在文件下載之前，所有不在xml文件中的客戶被置於有效性錯誤中。然後開始加載和更新現有客戶。我在交易中包裝了整個方法。但是，如果您嘗試使下載客戶端故意錯誤（未通過驗證），我並未將整個事務回滾。提示我做錯了什麼？如何在事務軌道中工作？Rails事務不會回滾

代碼：

if customers_upload 
    EXCHANGE_LOGGER.info("Start customers exchange") 
    Customer.transaction do 
    begin 
     customers = xml.elements.to_a("//customer") 

     customers_external_keys = [] 
     customers.each do |customer| 
     customers_external_keys << customer.elements['external_key'].text 
     end   
     customers_false = Customer.where("external_key NOT IN (?)", customers_external_keys) 
     customers_false.each do |customer_false| 
     if customer_false.validity 
      customer_false.update_attributes(validity: false)    
     end 
     end 
     EXCHANGE_LOGGER.info("#{customers_false.count} update validity in false") 

     customers.each do |customer| 
     customer_name = customer.elements['name'].text 
     customer_external_key = customer.elements['external_key'].text 
     customer_address = customer.elements['address'].text 
     customer_debt = customer.elements['debt'].text 
     customer_db = Customer.find_by_external_key(customer_external_key) 
     if !customer_db 
      new_customer = Customer.create(name: customer_name, external_key: customer_external_key, address: customer_address, debt: customer_debt) 
      EXCHANGE_LOGGER.info("#Create new customer #{customer_name}") 
     else 
      if !customer_db.validity 
      customer_db.update_attributes(name: customer_name, address: customer_address, debt: customer_debt, validity: true) 
      EXCHANGE_LOGGER.info("#Change validity true and update customer #{customer_name}")    
      else 
      customer_db.update_attributes(name: customer_name, address: customer_address, debt: customer_debt) 
      EXCHANGE_LOGGER.info("#Update customer #{customer_name}") 
      end   
     end 
     end 

    rescue => e 
     if e.present? 
     EXCHANGE_LOGGER.error("Customers not exchanged, message: #{e}") 
     raise ActiveRecord::Rollback, "Call tech support!" 
     end   
    end   
    end 
end

以下是exchange.log內容：

2013-11-29 10:53:23 INFO Start customers exchange 
2013-11-29 10:53:33 INFO 3981 update validity in false 
2013-11-29 10:53:33 ERROR Customers not exchanged, message: undefined method `text 'for nil: NilClass

以下是內容development.log：

客戶存在（0.2ms）SELECT 1 AS one從customers WHERE （customers。 External_key ='CB001820'和customers。 Id！ = 3979）LIMIT 1（0.1ms）UPDATE customers SET validity = 0， updated_at ='2013-11-29 10:53:33'WHERE customers。 Id = 3979 客戶的情況下（在0.2ms）選擇1整體從customers WHERE （customers。External_key = 'CB001826' AND customers。Id！= 3980）LIMIT 1（0.1毫秒）更新customers SET validity = 0， updated_at ='2013- 11 -29 10:53:33'Where customers。 Id = 3980 客戶的情況下（在0.2ms）選擇1整體從customers WHERE （customers。External_key = 'CB001822' AND customers。Id！= 3981）LIMIT 1（0.1毫秒）更新customers SET validity = 0， updated_at ='2013- 11 -29 10:53:33'Where customers。 Id = 3981 （時間爲2.2ms）SELECT COUNT（*）FROM customers WHERE（external_key NOT IN（ '12312'））（0.1毫秒）ROLLBACK

像ROLLBACK出現在末尾，但所有的客戶仍然會保持有效：（

來源

2013-11-29 galievruslan

忘記更改類型tablin Inno_DB :) – galievruslan

您必須在支持事務的數據庫中使用一個表例如InnoDB

來源

2013-12-23 06:46:29 galievruslan

Rails事務不會回滾

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