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Contents
require_dependency "renalware/letters"
require "attr_extras"
module Renalware
module Clinics
# TODO: Move this to a view?
class CurrentObservations
NULL_DATE = nil
pattr_initialize :patient
Observation = Struct.new(:date, :measurement)
# Returns [date, weight]
def weight
@weight ||= begin
result = ClinicVisit
.most_recent_for_patient(patient)
.where("weight is not null")
.pluck(:date, :weight).first || []
Observation.new(result.first, result.last)
end
end
# Returns [date, height]
def height
@height ||= begin
result = ClinicVisit
.most_recent_for_patient(patient)
.where("height is not null")
.pluck(:date, :height).first || []
Observation.new(result.first, result.last)
end
end
# Returns [date, [systolic_bp, diastolic_bp]]
def blood_pressure
@blood_pressure ||= begin
result = ClinicVisit
.most_recent_for_patient(patient)
.where("systolic_bp is not null and diastolic_bp is not null")
.pluck(:date, :systolic_bp, :diastolic_bp).first || [nil, nil, nil]
Observation.new(result[0], [result[1], result[2]])
end
end
def bmi
bmi = BMI.new(
height: height.measurement,
weight: weight.measurement
)
Observation.new(NULL_DATE, bmi.to_f)
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems