Question

假设我有一个类似的Activerecord结果：

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返回order.order_numbers

ActiveRecord_Associations_CollectionProxy

请注意=> [#<OrderNumber id: 53425, Order_number: "01100", Order_number_id: 5391, Order_number_status_id: 1, comment: nil, updated_at: "2016-11-18 16:20:36">, #<OrderNumber id: 53426, Order_number: "04503", Order_number_id: 5391, Order_number_status_id: 1, comment: nil, updated_at: "2016-11-18 16:19:49">, #<OrderNumber id: 53427, Order_number: "011004", Order_number_id: 5391, Order_number_status_id: 2, comment: nil, updated_at: "2016-11-18 16:19:49">, #<OrderNumber id: 53428, Order_number: "004505", Order_number_id: 5391, Order_number_status_id: 1, comment: nil, updated_at: "2016-11-18 16:19:49">, #<OrderNumber id: 53429, Order_number: "4506", Order_number_id: 5391, Order_number_status_id: 2, comment: nil, updated_at: "2016-11-18 16:19:49">, #<OrderNumber id: 53430, Order_number: "4507", Order_number_id: 5391, Order_number_status_id: 1, comment: nil, updated_at: "2016-11-18 16:19:49">]，其中1表示打开，2表示已关闭。

如果我想根据“关闭”状态拆分它并将结果输出到单独的数组中，怎么办呢？我只想将Open订单放入他们自己的数组中，但每次从关闭数字移动到开放数字时都会启动一个新数组。

在上面的例子中，结果将是

Array_1将包含ID 53425和53426
Array_2将包含id53428
Array_3将包含id 53430

所以它会将它分成3个不同的哈希值或数组，这些哈希值或数组只包含打开的订单号，它们都在一个数组中。

Order_number_status_id

我愿意接受有关输出格式的建议。

Answer 1

为什么不只是.split？ Array#Split

order.order_numbers.split{|o| o.Order_number_status_id == 0}

Answer 2

您可以使用group_by

最适合你的情况

Answer 3

查看标准方法Enumerable#chunk。

您可以执行以下操作：

order.order_numbers.chunk { |o_num| o_num.Order_number_status_id == 1 }.each{|a, b| p b}

将结果保存在新数组中以删除不必要的部分。

Rails将活动记录结果拆分为数组/哈希

3 个答案: