Return other_uid in auth headers and encode in bearer token

[benkovy]

Devise Token Auth provides a way to specify your own uid column. This column is respected when setting the current resource, however we do not expose this field in the auth headers (or encode it in the bearer token as a result).

Within DeviseTokenAuth::Concerns::User (particularly this method) I believe we should also return the custom uid in the headers so it can then be used by the client to store/reference after successful login or registration.

[mickamy]

Just curious but what is the purpose of other_id, or should I say what is the use-cases of it?
Isn't just a uid is not enought?

[bettysteger]

I would need to identify this for users that have the same email address... will this be added to the auth headers?