如何根据猫鼬的到期时间从数组中删除整个对象？

Question

文档：

        "notifcations": [
        {
          "title": "Joined the Tournament.",
          "description": "You have registered in the Tournament of Tournament #142, issued ₹10 from your balance.",
          "amount": 10,
          "createdAt": "2022-05-08T12:03:02.431Z",
          "expiresAt": "2022-05-09T12:03:05.983Z",
          "_id": "6277b17968729c2811137fb0"
        },
        {
          "title": "Joined the Tournament.",
          "description": "You have registered in the Tournament of Tournament #143, issued ₹10 from your balance.",
          "amount": 10,
          "createdAt": "2022-05-08T12:03:02.431Z",
          "expiresAt": "2022-05-09T12:03:05.983Z",
          "_id": "6277b17968729c2811137fb0"
        }
      ]

在这里，我想在通知数组中删除所有过期的对象 - "expiresAt" in object.想删除所有 expiresAt < Date.now()

的对象

通知数组存储在 mongodb 中，我想为此创建一个函数来删除过期的通知。

请帮忙！？

Answer 1

可能最简单的方法是使用 Array.filter()

const myObj = {
      "notifcations": [
        {
          "title": "Joined the Tournament.",
          "description": "You have registered in the Tournament of Tournament #141, issued ₹10 from your balance.",
          "amount": 10,
          "createdAt": "2021-05-08T12:03:02.431Z",
          "expiresAt": "2021-05-08T12:03:05.983Z",
          "_id": "6277b17968729c2811137fb0"
        },
        {
          "title": "Joined the Tournament.",
          "description": "You have registered in the Tournament of Tournament #142, issued ₹10 from your balance.",
          "amount": 10,
          "createdAt": "2022-05-08T12:03:02.431Z",
          "expiresAt": "2022-05-09T12:03:05.983Z",
          "_id": "6277b17968729c2811137fb0"
        },
        {
          "title": "Joined the Tournament.",
          "description": "You have registered in the Tournament of Tournament #143, issued ₹10 from your balance.",
          "amount": 10,
          "createdAt": "2022-05-08T12:03:02.431Z",
          "expiresAt": "2022-05-09T12:03:05.983Z",
          "_id": "6277b17968729c2811137fb0"
        }
      ]
};

myObj.notifcations = myObj.notifcations.filter(a => new Date(a.expiresAt) > new Date());
console.log(myObj);

如何根据猫鼬的到期时间从数组中删除整个对象？

How can I remove an entire object from an array by its expiry time in mongoose?

javascript

node.js

mongodb

mongoose