add displayLanguage to the ValueSet/$expand

[gjergjsheldija]

this PR should enable something like :

curl --location --request GET 'http://localhost:8080/fhir/ValueSet/$expand?url=http://terminology.hl7.org/CodeSystem/emdn/vs&filter=text&count=100&displayLanguage=en-IT'

on a ValueSet with designations

[jamesagnew]

This looks good to me, merging now. Thanks for the contrbution!

[toropok]

@gjergjsheldija excuse me, is that PR works? cant figure out how to get languare designation with $expand operation

[gjergjsheldija]

@toropok it should :)

does your code system have a displayLanguage ? is the expansion successful? please check the meta entry for this
are you using the correct version ?

[toropok]

@toropok it should :)

does your code system have a displayLanguage ? is the expansion successful? please check the meta entry for this are you using the correct version ?

@gjergjsheldija well, I was trying with this ValueSet: https://hapi.fhir.org/baseR4/ValueSet/$expand?url=http://hl7.org/fhir/ValueSet/languages&displayLanguage=nl

Does displayLanguage have to be in CodeSystem concept only? is there any docs or posts somewhere "how to bake ValueSets right"?

[gjergjsheldija]

hi @toropok
sorry for the late reply.
The parameters is used when the ValueSet is expanded. So it's not used in the query. Please check displayLanguage here http://hl7.org/fhir/valueset-operation-expand.html

best
Gjergj