FHIR Chat · HTTP response header and location · python

Stream: python

Topic: HTTP response header and location

Bob Milius (Apr 07 2018 at 13:29):

I've been exploring the fhirclient python package from the smart client-py repo, and wonder what the correct way to figure out the Location of the resource created after posting it to a server. For example posting to an open server with

response = mypatient.create(smart.server)
print(json.dumps(response, indent=4))

gives me

{
    "resourceType": "OperationOutcome",
    "text": {
        "status": "generated",
        "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><h1>Operation Outcome</h1><table border=\"0\"><tr><td style=\"font-weight: bold;\">INFORMATION</td><td>[]</td><td><pre>Successfully created resource &quot;Patient/2516/_history/1&quot; in 3ms</pre></td>\n\t\t\t\t\t\n\t\t\t\t\n\t\t\t</tr>\n\t\t</table>\n\t</div>"
    },
    "issue": [
        {
            "severity": "information",
            "code": "informational",
            "diagnostics": "Successfully created resource \"Patient/2516/_history/1\" in 3ms"
        }
    ]
}

I can parse the issue.diagnostics, but is there a structured way to get the Location field from a HTTP response header using the fhirclient package?

Pascal Pfiffner (Apr 08 2018 at 05:36):

I believe exposing response headers has not been implemented yet. You'd have to hook into the create and update methods in fhirabstractresource. The line ret = srv.post_json(...) returns a "requests" object that you can inspect to learn more about the response.

Bob Milius (Apr 08 2018 at 14:40):

thanks, @Pascal Pfiffner , I''ll look there.

Bob Milius (Apr 09 2018 at 00:35):

With the fhirclient package as distributed from https://github.com/smart-on-fhir/, mypatient.create(smart.server) returns the JSON formatted Content. I wanted access to the full HTTP header response, so I made the following simple change to the create, update, and delete methods in fhirclient/models/fhirabstractresource so that the entire requests.models.Response object is returned.

from

        ret = srv.post_json(self.relativeBase(), self.as_json())
        if len(ret.text) > 0:
            return ret.json()

to

        ret = srv.post_json(self.relativeBase(), self.as_json())
        if len(ret.text) > 0:
            # return the full requests.Response object
            return ret
            # return ret.json()

Now I can replicate the previous behavior of response by using response.json() and also access the headers by using response.headers, e.g., response.headers.['location']

Now testing to see if it breaks anything.

thanks again, @Pascal Pfiffner , for pointing me in the right direction.

Last updated: Apr 12 2022 at 19:14 UTC