Custom "id" field for all Documents

[Trevor Keith]

Hello,

I'm trying to figure out how to change the type of the _id field (which I believe is just "id" in MongoEngine) for all my Documents. I tried subclassing Document, but of course that doesn't work because then subclasses of my subclass will all go into the same collection. I also tried using a separate class that I subclass along with Document, but Document's "id" field still seems to override it. What's the best way to use a custom id field for all my Documents?

Thanks,

Trevor

[Hans Roman]

Your "id" field can be any type, but you'd have to set "primary_key" to True in that field. For instance:

class Foo(Document):

    id = StringField(primary_key=True)

    ...

[Jan Schrewe]

Or you can name the "id" field what you want and access it through the "pk" attribute. So this works too:

class Foo(Document):

    pantoffel_kartoffel = StringField(primary_key=True)

    ...

f = Foo.objects()[0]

print(f.pk)

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