FHIR Searching using POST

Another little thing that has some up as we implement our FHIR services is what HTTP verbs you can use when submitting a query. The ‘usual’ way to do this is with the GET verb, but the spec states that it is also legitimate to use a POST to the _search endpoint, with the parameters as an x-multi-part-form submission in the POST body.

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Search receipts in FHIR 

When writing a server that can respond to FHIR queries, it may not be clear what to do when you get a search parameter that you don’t understand. Or, for that matter, which of the defined search parameters against each resource you do need to support.

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Project Argonaut and FHIR

Most readers of this blog will be familiar with Project Argonaut – a project announced last year under the aegis of HL7 but funded by a number of US Vendors & Healthcare Providers to help accelerate the development of FHIR, and also the ‘SMART on FHIR‘ project.

Last week there was an on-line kick-off meeting attended by almost 100 people to describe the scope and purpose of the project, and to invite participation in the next phase. The project team were at pains to emphasise that the purpose of Argonaut is to accelerate the current work – it is not a ‘fork’ of the specification, or in competition with it in any way. All of the outputs remain fully open source – in fact they define it as a ‘code and documentation sprint’ – one that is time based and will finish once the objectives have been achieved (though, to my mind, follow-on projects are likely).

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