Takes a prescription item and sets the appropriate medication values from it.
| public createFromPrescriptionItem ( $item ) | ||
| $item | ||
/**
* Get or Create a Medication instance for the given patient id and item id.
*
* @TODO: consider error checking for Medication already existing?
*
* @param $patient_id
* @param $item_id
*
* @return Medication
*
* @throws Exception
*/
public function getMedicationForPrescriptionItem($patient_id, $item_id)
{
if ($item = OphDrPrescription_Item::model()->with('prescription.event.episode')->findByPk($item_id)) {
if ($item->prescription->event->episode->patient_id != $patient_id) {
throw new Exception('prescription item id and patient id must match');
}
$medication = new Medication();
$medication->createFromPrescriptionItem($item);
return $medication;
}
}
/**
* Gets the previous medications linked with items from the prescription events.
*
* @return array
*/
public function get_previous_medications()
{
$medicationCriteria = new CDbCriteria(array('order' => 'created_date DESC'));
$medicationCriteria->addCondition('end_date is not null and end_date < NOW()');
$medications = $this->patientMedications($medicationCriteria);
$medicationsFromPrescriptions = $this->prescriptionMedicationIds();
$prescriptionItems = $this->prescriptionItems($medicationsFromPrescriptions);
if ($prescriptionItems) {
foreach ($prescriptionItems as $item) {
$medication = new Medication();
$medication->createFromPrescriptionItem($item);
if ($medication->isPreviousMedication()) {
$medications[] = $medication;
}
}
}
usort($medications, array($this, 'sortMedications'));
return $medications;
}
