Mastering Flask Web Development - Second Edition

Create

To create a new document, just create a new instance of the class and call the save method, as follows:

>>> post = Post()
>>> post.title = "Post From The Console"
>>> post.text = "Lorem Ipsum..."
>>> post.save()

Otherwise, the values can be passed as keywords in the object creation, as follows:

>>> post = Post(title="Post From Console", text="Lorem Ipsum...")

Unlike SQLAlchemy, MongoEngine does not automatically save related objects that are stored in ReferenceFields. To save any changes to referenced documents along with the changes to the current document, pass cascade as True, as shown in the following code:

>>> post.save(cascade=True)

If you wish to insert a document and skip its checks against the defined parameters in the class ...