Patch Patient - Error is: body: must be a list of patch operation requests

[timammons]

I am trying to patch a patient in the following way, but getting an error body: must be a list of patch operation requests. Any idea why?

Code:
`static void UpdatePatientName(FhirClient fireClient, string patientID)
{
var pat = fireClient.Read($"/Patient/{patientID}");
var eTag = fireClient.LastResult.Etag;

Parameters patParams = new Parameters();
patParams.AddReplacePatchParameter("name/0/given", new HumanName().WithGiven("Beulah").WithGiven("Z"));

fireClient.RequestHeaders.IfMatch.Add(new EntityTagHeaderValue($"\"{eTag}\"", true)); 
var updatedPat = fireClient.Patch<Patient>($"{patientID}", patParams);

}`

This is the body it created, which appears to be a list of patch operation requests:
{"resourceType":"Parameters","parameter":[{"name":"operation","part":[{"name":"type","valueCode":"replace"},{"name":"path","valueString":"name/0/given"},{"name":"value","valueHumanName":{"given":["Beulah","Z"]}}]}]}

Thanks,
Tim

[ghost]

Could you post the full body that gets created ?

[timammons]

I am trying to patch a patient in the Cerner sandbox.
The PATCH request is:
PATCH /r4/ec2458f2-1e24-41c8-b71b-0e701af7583d/Patient/12804999

The body being sent is:

{
	"resourceType": "Parameters",
	"parameter": [
		{
			"name": "operation",
			"part": [
				{
					"name": "type",
					"valueCode": "replace"
				},
				{
					"name": "path",
					"valueString": "name/0/given"
				},
				{
					"name": "value",
					"valueHumanName": {
						"given": [
							"Beulah",
							"Z"
						]
					}
				}
			]
		}
	]
}

Cerner documentation says they expect something more like this:

[
	{
		"path": "/name/0/id",
		"op": "test",
		"value": "12804999"
	},
	{
		"path": "/name/0/given",
		"op": "replace",
		"value": [
			"Beulah",
			"Z"
		]
	}
]

The C# code is in the first message I posted. I'm trying to determine why my code and the SDK are producing what may be non-standard JSON.

Thanks,
Tim

[mbaltus]

The AddReplacePatchParameter will add a FHIRPath Patch parameter, following the rules that you can find here: http://www.hl7.org/fhir/fhirpatch.html. The FhirClient.Patch can then be used to request a FHIRPath Patch on the server. Cerner apparently does not use FHIRPath patch, but JSON Patch.

At the moment the SDK does not support JSON Patch. It has been requested in #1533. @marcovisserFurore: pinging you to maybe look into putting support for JSON Patch on the roadmap?

[timammons]

Mirjam,

Thank you for clearing that up. I looked at the Cerner documentation, and they do indeed state that they follow the JSON PATCH spec.

• Tim

[ewoutkramer]

I have added this as an enhancement request to the SDK, but we have no direct plans to implement it. Though, as usual, we would welcome a PR ;-)