#25774: Refactor of datetime expressions and better, official support for right-
hand-side date part extraction
-------------------------------------+-------------------------------------
Reporter: ryuusenshi | Owner: nobody
Type: New feature | Status: new
Component: Database layer | Version: master
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
db,expressions,date,time,extract,transform|
Has patch: 1 | Needs documentation: 1
Needs tests: 1 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by jarshwah):
* stage: Unreviewed => Accepted
Comment:
I think you're on the right track for most of these points. I'm not yet
convinced that adding `DateExtract` is necessary, but once the patch is
written I'll take another look then. I just worry that there'll be two
ways to extract a date part and that may lead to confusion.
Would like others opinions on ExtractX rather than XExtract. I think it
reads and sorts better.
YearLookup and YearComparisonLookup are going to be interesting. They'll
still need to work the same way when used on the left hand side. Perhaps
we can rename to YearLookupOptimised (for example, that's a bad name) and
register that as a lookup, but provide a different ExtractYear that does
what you'd expect on the right hand side. The optimised version would then
just be a hidden implementation detail that users shouldn't touch
themselves.
I'll have a look at the actual PR tomorrow. Great work so far.
--
Ticket URL: <https://code.djangoproject.com/ticket/25774#comment:2>
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