OEModule\PatientTicketing\models\Queue::afterValidate PHP Method

    public function afterValidate()
    {
        // validate any widget fields in the assignment_fields attribute
        foreach ($this->getAssignmentFieldDefinitions() as $i => $fld) {
            if (!($id = @$fld['id'])) {
                $this->addError('assignment_fields', 'ID required for assignment field ' . ($i + 1));
                continue;
            }
            if (@$fld['type'] == 'widget') {
                if (!@$fld['widget_name']) {
                    $this->addError('assignment_fields', 'Widget Name missing for ' . $id);
                } elseif (!is_file(\Yii::getPathOfAlias('application.modules.PatientTicketing.widgets.' . $fld['widget_name']) . '.php')) {
                    $this->addError('assignment_fields', 'Widget with name ' . $fld['widget_name'] . ' for ' . $id . ' not defined');
                }
            }
        }
        parent::afterValidate();
    }