Measurement::getPatientMeasurement PHP Method

    public function getPatientMeasurement()
    {
        if (!isset($this->patient_measurement)) {
            if ($this->isNewRecord) {
                $this->patient_measurement = new PatientMeasurement();
                $this->patient_measurement->measurement_type_id = $this->getMeasurementType()->id;
            } else {
                $this->patient_measurement = PatientMeasurement::model()->findByPk($this->patient_measurement_id);
            }
        }
        return $this->patient_measurement;
    }