I have one nested object in Compass MongoDB:

{
"data_rm": {
    "pembiayaan": {
        "name": "pembiayaan",
        "value": "asuransi",
        "type": "radio",
        "title": ""
    },
    "asuransi": {
        "name": "asuransi",
        "value": "ADMEDIKA - FWD LIFE INDONESIA (FINANSIAL WIRAMITRA DANADYAKSA, PT)",
        "type": "select-one",
        "text": "ADMEDIKA - FWD LIFE INDONESIA (FINANSIAL WIRAMITRA DANADYAKSA, PT)",
        "title": ""
    },
    "informasi_diperoleh_dari": {
        "name": "informasi_diperoleh_dari",
        "value": "pasien",
        "type": "radio",
        "title": ""
    },
    "cara_datang": {
        "name": "cara_datang",
        "value": "sendiri",
        "type": "radio",
        "title": ""
    },
    "nama_pengantar": {
        "name": "nama_pengantar",
        "value": "Tn. BAGUS",
        "type": "text",
        "title": ""
    },
    "no_telp_pengantar": {
        "name": "no_telp_pengantar",
        "value": "0813xxxxxxxx",
        "type": "text",
        "title": ""
    }
}

How did I return the document WHERE type is "select-one"? (I want to find which key in data_rm has the type of select-one)

** EDIT **

The desired output is:

  {
    data_rm: {
      "asuransi": {
        "name": "asuransi",
        "value": "ADMEDIKA - FWD LIFE INDONESIA (FINANSIAL WIRAMITRA DANADYAKSA, PT)",
        "type": "select-one",
        "text": "ADMEDIKA - FWD LIFE INDONESIA (FINANSIAL WIRAMITRA DANADYAKSA, PT)",
        "title": ""
      }
    }
  }

CodePudding user response：

Here's one way you could do it. In Compass you can enter each stage of the aggregation pipeline.

db.collection.aggregate([
  {
    "$set": { "rmArray": { "$objectToArray": "$data_rm" } }
  },
  {
    "$set": {
      "selOne": {
        "$filter": {
          "input": "$rmArray",
          "cond": { "$eq": [ "$$this.v.type", "select-one" ] }
        }
      }
    }
  },
  {
    "$replaceWith": { "data_rm": {"$arrayToObject": "$selOne" } }
  }
])

Try it on mongoplayground.net.