Stream: smart
Topic: SMART launch for a specific Resource instance
Michael Lawley (Mar 15 2019 at 05:02):
SMART is currently very EHR-oriented. Has there been any work on its use in other contexts?
The particular issue I have is wanting to be able to launch an App with a specific resource instance as the context (there's no "current patient").
A secondary requirement would be a POST-based launch where I'm supplying the Resource as the POST body (although this is probably simpler - there's no need to agree on what the parameter name is)
Grahame Grieve (Mar 15 2019 at 05:04):
what's a POST based launch look like? I don't follow that
Grahame Grieve (Mar 15 2019 at 05:05):
but I do firmly endorse the need for any kind of resource as a launch context
Isaac Vetter (Mar 15 2019 at 05:08):
Hey Michael, even from the EHR-oriented SMART launches, the ability to add additional contextual information as "SMART launch parameters" alongside the access_token is common. Ultimately, as long as it can be expressed as simple values, the user's session context should be presented to the app during the launch in these key/values pairs as the response from the authorization server's /token endpoint.
Michael Lawley (Mar 15 2019 at 05:39):
Well, with a POST-based launch I might have a template / partially authored resource (or one obtained via some off-line mechanism) and I want to pass it to the App ; maybe its a Bundle of Meds for curation into a current-meds list, or maybe its a template ValueSet (with boilerplate publisher, copyright, etc) as a starter for authoring a new ValueSet.
Isaac Vetter (Mar 15 2019 at 05:46):
Hey Michael, I draw the line on contextual launch parameters at "simple" parameters. If the contextual information can be expressed as a single, discrete value, then it's appropriate to send in an app launch. Alternatively, if the information is represented in a complex/hierarchical form, it should be accessed via a web service and not as a launch parameter.
Isaac Vetter (Mar 15 2019 at 05:46):
Of course, the SMART launch itself enables further web service use by providing the app with the OAuth2 access_token.
Michael Lawley (Mar 15 2019 at 05:57):
The challenge I have is that the "complex" information (FHIR Resource) is not available via a web API; it's sitting in a web browser's internal state. The browser can do an XHR to the SMART App, but it can't field requests itself.
Jenni Syed (Mar 15 2019 at 13:23):
What is the use case/workflow this is trying to solve for?
Michael Lawley (Mar 17 2019 at 21:58):
I have two clients, one is a specialised tool that creates transient and minimal ValueSets (normally these are POSTed to $expand), the other is a more complete authoring tool (Snapper, which is a SMART on FHIR app). I want to be able to hand off the partially-authored ValueSet to Snapper for complete authoring.
Either I create it on a FHIR server then launch (GET request) Snapper with a reference to the newly created thing (not great, since the resource is bare-bones, won't have a URI, etc) or I pass it directly to Snapper (POST request).
Clearly I have control of both clients so can solve this in several ways, but I'd rather build on a std interaction pattern.
Michael Lawley (Mar 25 2019 at 01:13):
I think this also relates to the idea of template resources that has been discussed in relation to use-cases like prescribing - handing a template resource back to the EHR for completion. In my use-case, I'm wanting to hand off a resource template from one SMART App to another SMART App rather than back to the host EHR.
Isaac Vetter (Mar 27 2019 at 19:13):
Hey @Michael Lawley , upon consideration, I think that the best fit in FHIR for a "POST-based launch" is actually the Questionnaire/QuestionnaireResponse stuff. See the larger diagram on the Structured Data Capture's workflow section. This "SDC" integration is quite similar to both IHE's RFD profile and the many ad-hoc POST-based launch integrations in the wild.
Michael Lawley (Mar 30 2019 at 10:16):
Hi @Isaac Vetter , I've had a look at the sequence/flow diagram but it's not clear to me how it relates?
Last updated: Apr 12 2022 at 19:14 UTC
