FHIR Chat · Call extended operation on previous version of resource?

Stream: implementers

Topic: Call extended operation on previous version of resource?

Preston TW (Dec 19 2019 at 21:15):

Hello! Is there any way to invoke extended operation for previous resource version? For example, should the following work:

api/v1/r4/Encounter/<Encounter instance ID>/_history/<Previous History version ID>/$<operation>

Thank you!

Grahame Grieve (Dec 19 2019 at 21:16):

we haven't documented that and don't expect it to work - historical versions are considered only accessible for audit purposes.

but we haven't said it can't work.

Elliot Silver (Dec 19 2019 at 22:20):

historical versions are considered only accessible for audit purposes.

Is that stated anywhere?

Grahame Grieve (Dec 19 2019 at 22:23):

not explicitly, And I can't even find where we say what I thought we said, which is that you can't search historical versions

Grahame Grieve (Dec 19 2019 at 22:24):

But we did specifically choose not to define a way to have an operation on a historical version of a resource, and removed the operations that were doing that

Elliot Silver (Dec 19 2019 at 22:27):

I realize I'm derailing Preston's thread, but is it valid to have a reference from one resource to a specific version of another resource? I want my Composition, DiagnosticReport, etc. to point to the observations as they existed when the document was authored, not as they may currently exist.