Question

我有一个通知页面。与社交网站上的任何通用通知页面一样。每个通知都有一个unix时间戳。我想根据天数将通知分成多维哈希。哈希键可以表示它的日期。例如：

notification['3July'][0] = 'Answered a question'
notification['3July'][1] = 'Answer got 13 upvotes'
notification['3July'][2] = 'Earned a badge'
....

notification['23June'][0]  = 'Set a bounty of 50 credits'
notification['23June'][1]  = 'Followed XYZ'
notification['23June'][2]  = 'Added a question on stack overflow'

然后我会遍历多维哈希并在每天下发布通知。目前我从数据库中获取数据，格式如下：

notification[0] = { 'text' => 'Answered a question' , 'timestamp' => 123456 }
notification[1] = { 'text' => 'Answer got 13 upvotes'  , 'timestamp' => 123456 }
notification[2] = { 'text' => 'Earned a badge'  , 'timestamp' => 123456 }
....

notification[3]  = { 'text' =>'Set a bounty of 50 credits'  , 'timestamp' => 123456 }
notification[4]  = { 'text' =>'Followed XYZ'  , 'timestamp' => 123456 }
notification[5]  = { 'text' =>'Added a question on stack overflow'  , 'timestamp' => 123456 }

在Ruby / Rails中执行此操作的最干净，最优化的方法是什么？

Answer 1

按时间戳订购通知，添加一列以选择仅具有日期的内容，然后在Ruby中使用group_by。这应该是获得它的最简单方法。

要选择其他列，您应该为其添加attr_accessor。

http://www.ruby-doc.org/core-2.0/Enumerable.html#method-i-group_by

根据时间戳将数据划分为多个哈希值

1 个答案: