购物车型号

Question

我不确定，但是我更改了这段代码，试图让它将值7777777777777放入数据库中，它总是把这个旧的serial_number 2147483647值存储在数据库中（甚至当我用2147483647串行nunmber删除该记录时）它仍然在数据库中插入记录2147483647而不是7777777777777：

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

购物车型号

def add_sellable_item(args={})#resource, _quantity, serial_number=nil
    resource = args[:resource]
    _quantity = args[:quantity]
    serial_number = args[:serial_number] if args[:serial_number]
    unit_type = args[:unit_type] if args[:unit_type]

    current_item = self.line_items.where(sellable_type: resource.class.name, sellable_id: resource.id).first

    if current_item && current_item.sellable.is_a?(Product)
      current_item.quantity += _quantity 
    else
      new_item = self.line_items.reload.create!(sellable_id: resource.id, sellable_type: resource.class.name, serial_number: 7777777777777)
      puts "What is the serial number #{new_item.serial_number}"

      new_item.quantity = _quantity
      new_item.unit_type = unit_type if unit_type
      return new_item
    end

    current_item
  end

我尝试使用重装，我尝试强制创建！我尝试显式设置serial_number，它仍然创建一个serial_number为2147483647的记录。我甚至在行项目模型上有validates_uniquness_of约束。

检查此注销，这是有道理的：

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'

rails将错误的值保存到数据库中

购物车型号

0 个答案: