Mastering MongoDB 4.x - Second Edition

Creating, updating, and deleting

Creating documents is a two-step process. First, we create our document and set the attribute values:

$book = new Book();$book->setName('MongoDB with Doctrine');$book->setPrice(45);

Following this, we ask Doctrine to save $book in the next flush() call:

$dm->persist($book);

We can force saving by manually calling flush(), as follows:

$dm->flush();

In this example, $dm is a DocumentManager object that we use to connect to our MongoDB instance, as follows:

$dm = DocumentManager::create(new Connection(), $config);

Updating a document is as easy as assigning values to the attributes:

$book->price = 39;$book->persist($book);

This will save our MongoDB with Doctrine book with the new price of 39.

Updating documents ...