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$base64decode

$base64decode(string?) -> string
Compact type signature<s-:s>

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

Browse categories
Encoding, Parsing, And SerializationText

Source: FUME*

* FUME replaces the original JSONata base64 helpers with UTF-8-aware implementations.

Documentation​

Decodes a base64 string into UTF-8 text.

If the input is undefined, the function returns undefined. This helper is useful when a mapping receives encoded text and needs to recover the original string before further parsing or matching.

Examples​

Decode a previously encoded display name​

Input

This example uses the patient-summary example input. The expression base64-encodes the patient display name and immediately decodes it again to show the return shape.

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

$base64decode($base64encode(name.display))

Result

"Avery Reed"