Comments (3)
LForms also supports x-fhir-query expressions, which are URLs that go to a FHIR server and fetch data. I suppose you could have a query (in a "variable" extension) that returned data that isn't FHIR (but still JSON) and then have an initialExpression that understood that format pick out the right value. The result would be something that only works for your server, obviously, but that might be okay for your goals.
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LForms supports Observation-based extraction and also the launchContext, variable, and initialExpression extensions, but not source queries. For an examples, see https://github.com/LHNCBC/lforms-fhir-app/blob/master/cypress/fixtures/R4/ussg-fhp.json or others under "R4". You can try these out in our "SDC Questionnaire App" (in the "Featured Questionnaires" section in the sidebar).
Contained ValueSets can be referenced in answerValueSet URLs, and I think contained Binary resources can be used for images.
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Mmmh okay so if I understand correctly: If our source data is not in FHIR and our FHIR store is not always updated immediately, we will not be able to use recent data in our questionnaire? (Unless we convert the source data to FHIR resources on the spot and put them in a dummy store from which we fill the Context of the form?)
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