I would really like two things for values to support.
1. Aliases .values(alias='field');
2. Expressions .values(alias=F('field'))
I think these two features are absolute must haves, and the syntaxes above
are already standard in other parts of the ORM.
If someone can come up with a way to support nested relations while
supporting the above syntax, then I'd be OK with that. But at the moment,
I'm firmly in the "this is the responsibility of a serialiser" camp. I'm
not convinced Django needs to support nested objects at all. Is this
something you could implement with your own queryset method on a manager?
Is this maybe something we could look at creating a new queryset method
called .values_dict() ?
If it weren't for backwards compatibility, I'd suggest that referencing the
related object would automatically nest that object. That would
differentiate between the id and the field values('related_id', 'related')
-> '{"related_id": 1, "related": {"id": 1, ..}}'.
If there's (rough) consensus on having nested objects, then we could allow
something like: .values(..., ..., nested=('related',
'related__otherrelated')). If the value of nested is an iterable then
assume we're nesting, otherwise nested is an alias for the field. I don't
particularly like overloaded kwargs, but we're just guarding against
someone wanting to alias as "nested" which we could call out in docs anyway.
The more I think about this the more I think nesting and aliases within a
nest should probably be done in a different queryset method. Or just
handled by a serialiser. If you want more requests per second, then add
some more backends.
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