Find and remove array value using mongoDB

Question

This is the data I want to find using device array value 1 for and that object and removes that value from the device array.

find using device array value 1 and remove that value from the array

This is my current object:

[ 
 {
    "devices": [
      "1",
      "2"
    ],
    "eui": "A5AC840871F01D65",
    "key": "5BCBF770D2B43638860F7DA3733ED1B3",
    
  },
  {
    "devices": [
      "3",
      "4"
    ],
    "eui": "A5AC840871F01D65",
    "key": "5BCBF770D2B43638860F7DA3733ED1B3",
    
  }
]

the expected output is :

 {
    "devices": [
      "2"
    ],
    "eui": "A5AC840871F01D65",
    "key": "5BCBF770D2B43638860F7DA3733ED1B3",
    
  },
  {
    "devices": [
      "3",
      "4"
    ],
    "eui": "A5AC840871F01D65",
    "key": "5BCBF770D2B43638860F7DA3733ED1B3",
    
  }
]

Hussam · Accepted Answer · 2021-06-09 09:16:01Z

1

You can use $pull for that. Here:

db.collection.update(
    { devices: "1" },
    { $pull: { devices: "1" } }
)

https://mongoplayground.net/p/ItZwZdtzjO5

answered Jun 9, 2021 at 9:16

Hussam

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