FHIR Chat · Using json _ notation for array of strings · implementers

Stream: implementers

Topic: Using json _ notation for array of strings

Sean McIlvenna (Mar 07 2020 at 20:32):

Reading http://www.hl7.org/fhir/json.html and something isn't clear to me:
I'm trying to figure out how to represent the http://hl7.org/fhir/StructureDefinition/elementdefinition-profile-element extension in JSON.
In XML, the extension is like so:

      <type>
        <code value="BackboneElement"/>
        <profile value="http://hl7.org/fhir/test/StructureDefinition/document-section-library">
          <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-profile-element">
            <valueString value="Composition.section:codeB"/>
          </extension>
        </profile>
      </type>

But in JSON, I'm not sure how I would represent that extension, since in the JSON it is just an array of strings like so:

{
  type: ['profile1', 'profile2', 'etc.']
}

I don't see any examples of how to do this. Would I just create an array of _type, that aligns with the number of elements in the array of strings?

{
  type: ['profile1', 'profile2', 'etc.'],
  _type: [{
     extension: [{ ... }]
  }, {
     extension: [{ ... }]
  }, {
     extension: [{ ... }]
  }]
}

@Grahame Grieve

Grahame Grieve (Mar 07 2020 at 21:56):

yes. for an example, see http://hl7.org/fhir/json.html#primitive, and see the example starting with <code value="a"/>

Sean McIlvenna (Mar 08 2020 at 01:12):

Ahh... now I see it. Not sure why it took you telling me to look at it for my eyeballs to see it LOL

Eric Haas (Mar 08 2020 at 02:03):

lots o examples of primitive extensions in US Core -e.g: http://hl7.org/fhir/us/core/SearchParameter-us-core-allergyintolerance-clinical-status.json.html

Last updated: Apr 12 2022 at 19:14 UTC