/**
* set patient allergies to be the allergies identified by the array of ids. Other allergies will be removed
* @param $allergy_ids
* @throws Exception
*/
public function assignAllergies($allergy_ids)
{
$insert_allergy_ids = $allergy_ids;
$remove_allergy_ids = array();
// Check existing allergies
foreach ($this->allergies as $allergy) {
if (($key = array_search($allergy->id, $insert_allergy_ids)) !== false) {
// Allergy unchanged, don't remove or insert
unset($insert_allergy_ids[$key]);
} else {
// Allergy removed
$remove_allergy_ids[] = $allergy->id;
}
}
// Insert new allergies
foreach ($insert_allergy_ids as $allergy_id) {
$paa = new PatientAllergyAssignment();
$paa->patient_id = $this->id;
$paa->allergy_id = $allergy_id;
if (!$paa->save()) {
throw new Exception("Unable to save patient_allergy_assignment: " . print_r($paa->getErrors(), true));
}
}
$criteria = new CDbCriteria();
$criteria->addCondition('patient_id = :patient_id');
$criteria->params[':patient_id'] = $this->id;
$criteria->addInCondition('allergy_id', $remove_allergy_ids);
PatientAllergyAssignment::model()->deleteAll($criteria);
}
/**
* adds an allergy to the patient
*
* @param Allergy $allergy
* @param string $other
* @throws Exception
*/
public function addAllergy(Allergy $allergy, $other = null, $comments = null, $startTransaction = true)
{
if ($allergy->name == 'Other') {
if (!$other) {
throw new Exception("No 'other' allergy specified");
}
} else {
if (PatientAllergyAssignment::model()->exists('patient_id=? and allergy_id=?', array($this->id, $allergy->id))) {
throw new Exception("Patient is already assigned allergy '{$allergy->name}'");
}
}
if ($startTransaction) {
$transaction = Yii::app()->db->beginTransaction();
}
try {
$paa = new PatientAllergyAssignment();
$paa->patient_id = $this->id;
$paa->allergy_id = $allergy->id;
$paa->comments = $comments;
$paa->other = $other;
if (!$paa->save()) {
throw new Exception('Unable to add patient allergy assignment: ' . print_r($paa->getErrors(), true));
}
$this->audit('patient', 'add-allergy');
if ($this->no_allergies_date) {
$this->no_allergies_date = null;
if (!$this->save()) {
throw new Exception('Could not remove no allergy flag: ' . print_r($this->getErrors(), true));
}
}
$this->audit('patient', 'remove-noallergydate');
if ($startTransaction) {
$transaction->commit();
}
} catch (Exception $e) {
if ($startTransaction) {
$transaction->rollback();
}
throw $e;
}
}
