Hello, I've a question. Let's say I have created schema named

blah

that has only one field

myKey

. When I get my data from DB I have a lot of keys in each object. And I'm lazy to do mapping manually. So I trying to add objects with a lot of keys. How can I automatically omit all extra fields that aren't defined in the schema?

Any field that's not part of schema is still stored as part of the document. Only fields present in the schema are indexed for operations like search etc.