BaseActiveRecord::afterSave PHP Method

    protected function afterSave()
    {
        if ($this->auto_update_relations) {
            $record_relations = $this->getMetaData()->relations;
            // build a list of relations we need to update and the thru relations
            // that should be ignored (because the actual relations we're interested in will update these)
            $thru_rels = array();
            $many_rels = array();
            foreach ($record_relations as $name => $rel) {
                if (in_array(get_class($rel), array(self::HAS_MANY, self::MANY_MANY))) {
                    $many_rels[] = $name;
                    if ($rel->through) {
                        $thru_rels[] = $rel->through;
                    }
                }
            }
            $safe_attributes = $this->getSafeAttributeNames();
            foreach ($many_rels as $name) {
                if (in_array($name, $thru_rels) || !in_array($name, $safe_attributes)) {
                    continue;
                }
                $rel = $record_relations[$name];
                $new_objs = $this->{$name};
                $orig_objs = $this->getRelated($name, true);
                if (get_class($rel) == self::MANY_MANY) {
                    foreach ($orig_objs as $obj) {
                    }
                    $this->afterSaveManyMany($name, $rel, $new_objs, $orig_objs);
                } else {
                    if ($thru_name = $rel->through) {
                        // This is a through relationship so need to update the assignment table
                        $thru = $record_relations[$thru_name];
                        if ($thru->className == $rel->className) {
                            // same behaviour when the thru relation is the same class
                            $this->afterSaveHasMany($name, $rel, $new_objs, $orig_objs);
                        } else {
                            $this->afterSaveThruHasMany($name, $rel, $thru, $new_objs);
                        }
                    } else {
                        $this->afterSaveHasMany($name, $rel, $new_objs, $orig_objs);
                    }
                }
            }
        }
        $this->originalAttributes = $this->getAttributes();
        parent::afterSave();
    }

 protected function afterSave()
 {
     return parent::afterSave();
 }