mongoose MongoDB -如何删除对象数组中的元素？

sulc1iza 于 2022-11-13 发布在 Go

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我有一个项目，我使用mongodb作为数据库。所以我想以下
例如，有一个产品集合

products: [
  {
    "name": "Product 1",
    "products": [
      {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 13,
        "path": ""
      },
      {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 11,
        "path": ""
      },
     {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 10,
        "path": ""
     }
    ]
  },
  {
    "name": "Product 2",
    "products": [
     {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 10,
        "path": ""
     },
     {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 11,
        "path": ""
     }

    ]
  }
]

我想删除ID为：10从所有的文档集合产品中使用updatesmany或任何MongoDB查询所以在更新之后，最终的文档应该是这样的

products: [
  {
    "name": "Matériel crémation",
    "products": [
      {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 13,
        "path": ""
      },
      {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 11,
        "path": ""
      }
    ]
  },
  {
    "name": "Documents",
    "products": [
     {
        "file": "data:image/;base64,",
        "name": "Sacs bordeaux",
        "description": "Pour les crémations Référence",
        "id": 11,
        "path": ""
     }

    ]
  }
]

mongoose

来源：https://stackoverflow.com/questions/74042730/mongodb-how-to-remove-elements-by-certain-criteria-in-array-of-objects

1条答案

按热度按时间

wlzqhblo1#

将$filter与$set连接起来

db.collection.update({},
[
  {
    $set: {
      products: {
        "$filter": {
          "input": "$products",
          "as": "p",
          "cond": {
            $ne: [
              "$$p.id",
              10
            ]
          }
        }
      }
    }
  }
],
{
  multi: true
})

这里是Mongo Playground供您参考。

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mongoose MongoDB -如何删除对象数组中的元素？

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