对对象mongodb laravel中的数组进行排序

Question

我有这个对象，我想按它created_at对Demo2进行排序。  我使用mongodb作为db laravel php

Demo": {
    "Demo2": [
    { 
    "type": "review",       
    "created_at": "1970-01-01 05:30:00"
    },
    {
    "type": "store",        
    "created_at": "2019-04-16 6:22:30"
    },
    {
    "type": "postw",        
    "created_at": "2019-04-16 16:23:10"
   }

  ],

}

如何通过laravel mongodb查询实现此功能。

Answer 1

1. 您需要使用Aggregation Framework来完成此操作

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