FHIR Chat · FHIRPath for extended primitives · implementers

Stream: implementers

Topic: FHIRPath for extended primitives

Sergej Reiser (Aug 17 2020 at 09:02):

Is it possible to access an Extension to a primitive attribute using FHIRPath?

Consider this resource:

{
    "resourceType": "Consent",
    "status": "incative",
    "_status": {
        "extension": [
            {
                "url": "http://example.com/Extension/my-primitive-extension",
                "valueString": "cancelled"
            }
        ]
    }
}

What would my FHIRPath expression look like, if i wanted to access the "cancelled" string?

ryan moehrke (Aug 17 2020 at 15:12):

Simply 'Consent.status.extension.value' should work, I believe that the underscore is only for the json schema

Sergej Reiser (Aug 18 2020 at 08:51):

Thanks, this works indeed. It didnt work with the FHIR-Path online Demo, so i assumed that there must be another trick.
https://niquola.github.io/fhirpath-demo

Testing the expression with HAPI's FHIRPath implementation proved to be working afterall.

Last updated: Apr 12 2022 at 19:14 UTC