Class: OpenehrRails::FhirController

Inherits:
ApplicationController show all
Defined in:
app/controllers/openehr_rails/fhir_controller.rb

Overview

HL7 FHIR R5 facade. Reads/searches/creates entry-level resources (Observation, ...) by dispatching on the archetype code through ResourceRegistry. Created resources are converted to openEHR RM and stored canonically by the backing Storable model.

Mounted under the admin engine, so the FHIR base URL is /fhir (e.g. /openehr/fhir).

Constant Summary collapse

FHIR_CONTENT_TYPE = 
'application/fhir+json'

Instance Method Summary collapse

Instance Method Details

#create ⇒ Object

POST /fhir/Observation

Raises:



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# File 'app/controllers/openehr_rails/fhir_controller.rb', line 52

def create
  resource = parse_body
  code = resource.dig('code', 'coding', 0, 'code')
  entry = OpenehrRails::Fhir::ResourceRegistry.find_by_code(code)
  raise OpenehrRails::Fhir::Deserializer::UnmappedResource, "unknown code #{code.inspect}" unless entry

  attrs = OpenehrRails::Fhir::Deserializer.new(entry.model, resource).attributes
  record = entry.model.create!(attrs)
  observation = OpenehrRails::Fhir::Serializer.new(record).observations
                                              .find { |o| o[:code][:coding].first[:code] == code }

  response.headers['Location'] = "#{request.path}/#{observation[:id]}"
  render_fhir(observation, status: :created)
end

#metadata ⇒ Object 



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# File 'app/controllers/openehr_rails/fhir_controller.rb', line 18

def metadata
  render_fhir OpenehrRails::Fhir::CapabilityStatement.build(base_url: request.base_url)
end

#search ⇒ Object

GET /fhir/Observation?code=<archetype_id>&subject=



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# File 'app/controllers/openehr_rails/fhir_controller.rb', line 30

def search
  entries = lookup_entries(params[:code])
  records = entries.flat_map { |entry| scoped_records(entry) }.uniq
  observations = records.flat_map { |record| OpenehrRails::Fhir::Serializer.new(record).observations }
  observations = filter_by_code(observations, params[:code])

  render_fhir(searchset_bundle(observations))
end

#show ⇒ Object

GET /fhir/Observation/:id (id = "-")



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# File 'app/controllers/openehr_rails/fhir_controller.rb', line 40

def show
  record, entry = resolve(params[:id])
  return render_not_found('Observation', params[:id]) unless record

  observation = OpenehrRails::Fhir::Serializer.new(record).observations
                                              .find { |o| o[:id] == params[:id] }
  return render_not_found('Observation', params[:id]) unless observation

  render_fhir observation
end

#structure_definition ⇒ Object 



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# File 'app/controllers/openehr_rails/fhir_controller.rb', line 22

def structure_definition
  profile = OpenehrRails::Fhir::ProfileRepository.find(params[:id])
  return render_not_found('StructureDefinition', params[:id]) unless profile

  render_fhir profile
end