Implementing CRUD transactions using MongoEngine

MongoEngine is an ODM that uses PyMongo to create an easy-to-use framework that can assist in managing MongoDB documents. It offers API classes that can help generate model classes using its field types and attribute metadata. It provides a declarative way of creating and structuring the embedded documents.

Before we explore this ODM, we need to install it using the following pip command:

pip install mongoengine

Establishing database connection

MongoEngine has one of the most straightforward ways to establish a connection. Its mongoengine module has a connect() helper method that connects to the MongoDB database when it’s given the appropriate database connections. Our application must have a generator method to create a reference to the database connection and close this created connection after the transactions expire. The following script showcases the MongoEngine database connectivity:

from mongoengine import...