Mysql rails将错误的值保存到数据库

我不确定，但我修改了此代码以尝试将值777放入数据库它总是将此旧序列号2147483647值存储在数据库中（即使我使用2147483647序列号删除了该记录），它仍然会将2147483647而不是777插入数据库中的记录：

def create
    @cart = current_cart
    quantity = nil
    resource = nil
    args = {}

    args[:quantity] = is_number?(params[:quantity]) ? params[:quantity].to_i : 1
    if params[:sellable_type] == "Product"
      @product = Product.find(params[:sellable_id])
      args[:resource] = @product
    elsif params[:sellable_type] == "AirtimePlan"
      @airtime_plan = AirtimePlan.find(params[:sellable_id])
      if @cart.airtime_list_items.any?
        flash[:notice] = {:too_many_plans => "Can only purchase one airtime plan at a time"}
        render "airtime_plans/show" and return
      end

      if ['MarineTrac','MotoTrac','FleetTrac','AutoTrac'].include? params[:unit_type]
        args[:unit_type] = params[:unit_type]      
      else
        flash[:notice] = {:nonexistant_plan => "No such plan exists"}
        render "airtime_plans/show" and return
      end

      args[:resource] = @airtime_plan
    end

    args[:serial_number] = params[:serial_number]

    @line_item = @cart.add_sellable_item args

    #save line item to update its quantity, this will also save association with carton
    if @line_item.save  
      redirect_to cart_path(@cart), notice: 'Line item created.'
    else
      if params[:sellable_type] == "Product"
        render "products/show"
      else
        flash[:notice] = @line_item.errors.messages
        render "airtime_plans/show"
      end
    end
  end

推车模型 我试着使用重新加载，我试着强制创建！我尝试显式设置序列号，但它仍然创建序列号为2147483647的记录。我甚至在行项目模型上验证了约束的唯一性

请检查此注销，这很有意义：

Started POST "/line_items" for 127.0.0.1 at 2013-05-21 14:01:18 -0400
Processing by LineItemsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"IOXew7ITmoysfrxHO3CYwYB2b7TLFhVR7JgwhwxqwXg=", "serial_number"=>"102099394", "unit_type"=>"MarineTrac", "sellable_id"=>"118", "sellable_type"=>"AirtimePlan", "commit"=>"Add to Cart"}
   (0.1ms)  BEGIN
  SQL (0.4ms)  INSERT INTO `line_items` (`cart_id`, `created_at`, `order_id`, `quantity`, `sellable_id`, `sellable_type`, `serial_number`, `unit_type`, `updated_at`) VALUES (NULL, '2013-05-21 18:01:18', NULL, 1, NULL, NULL, 7777777777777, NULL, '2013-05-21 18:01:18')
Mysql2::Error: Duplicate entry '2147483647' for key 'index_line_items_on_serial_number': INSERT INTO `line_items` (`cart_id`, `created_at`, `order_id`, `quantity`, `sellable_id`, `sellable_type`, `serial_number`, `unit_type`, `updated_at`) VALUES (NULL, '2013-05-21 18:01:18', NULL, 1, NULL, NULL, 7777777777777, NULL, '2013-05-21 18:01:18')
   (0.5ms)  ROLLBACK
Completed 500 Internal Server Error in 14ms

ActiveRecord::RecordNotUnique (Mysql2::Error: Duplicate entry '2147483647' for key 'index_line_items_on_serial_number': INSERT INTO `line_items` (`cart_id`, `created_at`, `order_id`, `quantity`, `sellable_id`, `sellable_type`, `serial_number`, `unit_type`, `updated_at`) VALUES (NULL, '2013-05-21 18:01:18', NULL, 1, NULL, NULL, 7777777777777, NULL, '2013-05-21 18:01:18')):
  app/controllers/line_items_controller.rb:8:in `create'

---

您是否将

表格

字段设置为

int

？？因为这里看起来像是值溢出是的，它被设置为int。什么是值溢出？有些疯狂的事情正在发生，因为我甚至更改了创建操作，只是为了创建一个具有特定序列号的行项目，我查看了sql日志，它尝试使用77777值进行更新，但最终仍然尝试插入2147483647。将

INT

转换为

BIG INT

并尝试该操作。请注意，当我清除浏览器缓存时在chrome中，它将正确的值保存到数据库中。但是这种情况以前发生过，希望您的大整数解决方案能够阻止我清除浏览器缓存。@DevalShah您能解释一下使用大整数而不是整数的原理吗？

Started POST "/line_items" for 127.0.0.1 at 2013-05-21 14:01:18 -0400
Processing by LineItemsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"IOXew7ITmoysfrxHO3CYwYB2b7TLFhVR7JgwhwxqwXg=", "serial_number"=>"102099394", "unit_type"=>"MarineTrac", "sellable_id"=>"118", "sellable_type"=>"AirtimePlan", "commit"=>"Add to Cart"}
   (0.1ms)  BEGIN
  SQL (0.4ms)  INSERT INTO `line_items` (`cart_id`, `created_at`, `order_id`, `quantity`, `sellable_id`, `sellable_type`, `serial_number`, `unit_type`, `updated_at`) VALUES (NULL, '2013-05-21 18:01:18', NULL, 1, NULL, NULL, 7777777777777, NULL, '2013-05-21 18:01:18')
Mysql2::Error: Duplicate entry '2147483647' for key 'index_line_items_on_serial_number': INSERT INTO `line_items` (`cart_id`, `created_at`, `order_id`, `quantity`, `sellable_id`, `sellable_type`, `serial_number`, `unit_type`, `updated_at`) VALUES (NULL, '2013-05-21 18:01:18', NULL, 1, NULL, NULL, 7777777777777, NULL, '2013-05-21 18:01:18')
   (0.5ms)  ROLLBACK
Completed 500 Internal Server Error in 14ms

ActiveRecord::RecordNotUnique (Mysql2::Error: Duplicate entry '2147483647' for key 'index_line_items_on_serial_number': INSERT INTO `line_items` (`cart_id`, `created_at`, `order_id`, `quantity`, `sellable_id`, `sellable_type`, `serial_number`, `unit_type`, `updated_at`) VALUES (NULL, '2013-05-21 18:01:18', NULL, 1, NULL, NULL, 7777777777777, NULL, '2013-05-21 18:01:18')):
  app/controllers/line_items_controller.rb:8:in `create'