How to handle optional keys

[jhnns]

I dont know if this an issue for alamid-schema but how can we handle an update request to delete an optional key. Alamid-schema doesnt know about requests, but maybe there should be a method to apply a diff. Or maybe this should be done by the model?

[jhnns]

I think alamid schema should provide a convenient method that applies all keys to another object. And normalize should then strip away all undefined/null Valses that are optional.

This means that optional values cant be null or undefined.

[jhnns]

Two things to remember in this context:

• mongoose will remove all properties in the db that have been set to undefined explicitly (not via delete).
• JSON.stringify() removes all values that are undefined. This means that we can't send explicit undefined values over the wire.

We need to discuss what null, explicit undefined and actual undefined means in the context of alamid-schema.