OEModule\OphCiExamination\models\Element_OphCiExamination_InjectionManagementComplex::updateRisks PHP Method

    public function updateRisks($side, $risk_ids)
    {
        $current_risks = array();
        $save_risks = array();
        foreach ($this->risk_assignments as $curr) {
            if ($curr->eye_id == $side) {
                $current_risks[$curr->risk_id] = $curr;
            }
        }
        // go through each update risk id, if it isn't assigned for this element,
        // create assignment and store for saving
        // if there is, remove from the current risk array
        // anything left in $current_risks at the end is ripe for deleting
        foreach ($risk_ids as $risk_id) {
            if (!array_key_exists($risk_id, $current_risks)) {
                $s = new OphCiExamination_InjectionManagementComplex_RiskAssignment();
                $s->attributes = array('element_id' => $this->id, 'eye_id' => $side, 'risk_id' => $risk_id);
                $save_risks[] = $s;
            } else {
                // don't want to delete later
                unset($current_risks[$risk_id]);
            }
        }
        // save what needs saving
        foreach ($save_risks as $save) {
            $save->save();
        }
        // delete the rest
        foreach ($current_risks as $curr) {
            $curr->delete();
        }
    }