FHIR Chat · Read Observations on a Patient · implementers

Stream: implementers

Topic: Read Observations on a Patient

Chris Meeusen (May 01 2017 at 17:43):

Not sure how to use this API to get all observations on a given patient. Tried this:

        var loc = new Uri(FhirClient.Endpoint + string.Format("/Observation?patient={0}", patId));
        var obs = FhirClient.Read<Observation>(loc);

and i've tried this:
var obs = FhirClient.Read<Observation>(string.Format("patient={0}",patId));

both return this:
<ExceptionMessage>
Must be a FHIR REST url containing the resource type in its path Parameter name: location
</ExceptionMessage>
<ExceptionType>System.ArgumentException</ExceptionType>
<StackTrace>
at Hl7.Fhir.Rest.FhirClient.verifyResourceIdentity(Uri location, Boolean needId, Boolean needVid) at Hl7.Fhir.Rest.FhirClient.Read

can someone point me in the right direction?

Chris Meeusen (May 01 2017 at 17:54):

getting this Additional information: Must be a FHIR REST url containing the resource type in its path
when i change the code to this:

var obs = FhirClient.Read<Observation>("Observation");

I'm just trying to get a list of observations for a given patient.
Thanks

Yunwei Wang (May 01 2017 at 18:11):

You should use FhirClient.Search<Observation>(string.Format("patient={0}",patId));

Chris Meeusen (May 01 2017 at 18:17):

Just to be clear I have this query i can run in postman and it pulls back what i want:

https://api.hspconsortium.org/mysandboxidhere/data/Observation?patient=SMART-1288992

And all I'm trying to do is execute that with this api.

var obs =FhirClient.Search<Observation>(new string[] { string.Format("Observation?patient={0}",patId) });

returns this error message:
Operation was unsuccessful, and returned status NotAcceptable. OperationOutcome: Overall result: FAILURE (1 errors and 0 warnings) [ERROR] (no details)(further diagnostics: Endpoint returned a body with contentType 'text/html', while a valid FHIR xml/json body type was expected. Is this a FHIR endpoint?)

Yunwei Wang (May 01 2017 at 18:48):

Have you got authentication in your query? When I access that link directly, I got error: Full authentication is required to access this resourceunauthorized

Chris Meeusen (May 01 2017 at 18:50):

You're correct I had a flaw in my code, I wasn't setting the access_token.
var obs =FhirClient.Search<Observation>(new string[] { string.Format("patient={0}",patId) });
seems to work, thanks!

Last updated: Apr 12 2022 at 19:14 UTC