#19463: Add UUID Field to core
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Reporter: guettli | Owner: nobody
Type: New feature | Status: new
Component: Database layer | Version: 1.4
(models, ORM) | Resolution:
Severity: Normal | Triage Stage:
Keywords: | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by akaariai):
I've been thinking that we would likely want to have a new field type:
GeneratedField. This is like AutoField - the field gets a value on save()
if it doesn't already have a value, and this field type is always a
primary key (I am not 100% sure of the PK requirement, but it could
simplify things). GeneratedField would have a backing field (the db
storage type) and some generator, where the generator could fetch the
value from DB using RETURNING, could generate the value in Python (like
default, but with access to connection), or it could fetch the value after
save from the DB (AutoField does this using select currval(someseq) on
some backends).
I think such a field type would cover a lot of requests we have currently
- unsigned serial fields, tiny/big/...integer serial fields, UUID fields
(no matter what the UUID generator function is), and likely some more.
I don't know how hard such a field will be to write, or what the exact API
should be - so this is mostly hand waving at the moment. Still, it seems
there are only two public API places where this would affect current code
- model.save() and bulk_create(), so it seems this should not be totally
out of reach as a feature.
--
Ticket URL: <https://code.djangoproject.com/ticket/19463#comment:5>
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