Class: Renalware::Pathology::CurrentObservationSet

Inherits:
ApplicationRecord
  • Object
show all
Defined in:
app/models/renalware/pathology/current_observation_set.rb

Overview

We maintain current observations for each patient in their #current_observation_set. CurrentObservationSet#values is a hash (stored as jsonb) where the OBX code is the key and the result value and observation date are themselves a hash. So values looks like this {

"HGB": {
  "result": 123,
  observed_at: "2017-12-12 12:12:12"
},
"CRE": {
  ...
}

} and always contains the very latest pathology result for any code. We store all incoming OBX codes, not just a restricted list. Legacy data might only contain a subset of codes, so #values should not be relied on to cover current observations for the patients entire history, just key ones. When displaying or using a patient’s current_observation_set the consuming code must filter out the codes it wants.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.null_values_hash ⇒ Object 



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# File 'app/models/renalware/pathology/current_observation_set.rb', line 47

def self.null_values_hash
  HashWithIndifferentAccess.new.extend(ObservationSetMethods)
end

Instance Method Details

#values_for_codes(codes) ⇒ Object

Select values frm the set where the code matches the code or array of codes requested. When the code is not found in the set, return an empty hash for that code. When the patient has no current_observation_set, return an empty hash for each code. We need to be sure to extend the HashWithIndifferentAccess returned from #select with the ObservationSetMethods so a user can call eg ...hgb_date or ...plt etc without error



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# File 'app/models/renalware/pathology/current_observation_set.rb', line 40

def values_for_codes(codes)
  hash = Array(codes).each_with_object(HashWithIndifferentAccess.new) do |code, hash|
    hash[code] = values[code] || CurrentObservationSet.null_values_hash
  end
  hash.extend(ObservationSetMethods)
end