Question

Essentially I’d like to be able to defined dynamic fields by using a property decorator on my MongoEngine models. Something like this:

class Model(Document):
    foo = StringField()

    @property
    def bar(self):
        return 'baz'

m = Model(foo='abc'); m.save()

Then I’d like to be able to query by the property. Something like this:

Model.objects(bar='baz')

I thought maybe DynamicDocument might provide this facility. But that doesn’t seem to work. Any suggestions? Could a custom property decorator handle this?

Answer 1

Properties don’t act like fields no data is stored in the database, so you cant query the database for a match.