Phalcon\Mvc\MongoCollection::save PHP Method

    public function save()
    {
        $dependencyInjector = $this->_dependencyInjector;
        if (!is_object($dependencyInjector)) {
            throw new Exception("A dependency injector container is required to obtain the services related to the ORM");
        }
        $source = $this->getSource();
        if (empty($source)) {
            throw new Exception("Method getSource() returns empty string");
        }
        $connection = $this->getConnection();
        $collection = $connection->selectCollection($source);
        $exists = $this->_exists($collection);
        if (false === $exists) {
            $this->_operationMade = self::OP_CREATE;
        } else {
            $this->_operationMade = self::OP_UPDATE;
        }
        /**
         * The messages added to the validator are reset here
         */
        $this->_errorMessages = [];
        $disableEvents = self::$_disableEvents;
        /**
         * Execute the preSave hook
         */
        if (false === $this->_preSave($dependencyInjector, $disableEvents, $exists)) {
            return false;
        }
        $data = $this->toArray();
        /**
         * We always use safe stores to get the success state
         * Save the document
         */
        switch ($this->_operationMade) {
            case self::OP_CREATE:
                $status = $collection->insertOne($data);
                break;
            case self::OP_UPDATE:
                $status = $collection->updateOne(['_id' => $this->_id], ['$set' => $this->toArray()]);
                break;
            default:
                throw new Exception('Invalid operation requested for MongoCollection->save()');
        }
        $success = false;
        if ($status->isAcknowledged()) {
            $success = true;
            if (false === $exists) {
                $this->_id = $status->getInsertedId();
            }
        }
        /**
         * Call the postSave hooks
         */
        return $this->_postSave($disableEvents, $success, $exists);
    }