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$omitKeys

$omitKeys(object?, keysToOmit?) -> object
Compact type signature<o-a<s>?:o>

If object is omitted, the current context value is used.

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Objects And Structure

Source: FUME

Documentation​

Returns a new object with the named keys removed.

keysToOmit can be a single string or an array of strings, and each selector is compared to object keys using string conversion. If keysToOmit is undefined or null, the function returns a shallow copy of the original object.

Examples​

Remove keys from an object​

Input

This example uses the patient-summary example input. The expression selects patientId, sex, and birthDate, then removes birthDate.

Example input

JSON
{
  "patientId": "pat-0001",
  "name": {
    "given": "Avery",
    "family": "Reed",
    "display": "Avery Reed"
  },
  "birthDate": "1990-06-12",
  "sex": "female",
  "primaryCareTeam": {
    "organization": "ExampleCare",
    "facility": "ExampleCare Clinic",
    "practitioner": {
      "practitionerId": "prac-4001",
      "display": "Jordan Kim"
    }
  },
  "identifiers": {
    "memberId": "mbr-3001",
    "recordNumber": "rec-5001"
  },
  "tags": [
    "demo",
    "fictional"
  ],
  "_xmlTagName": "patientSummary"
}

Expression

$omitKeys($selectKeys($, ["patientId", "sex", "birthDate"]), ["birthDate"])

Result

{
  "patientId": "pat-0001",
  "sex": "female"
}