#24747: Allow transforms in order_by
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Reporter: sparkyb | Owner: nobody
Type: New feature | Status: new
Component: Database layer (models, ORM) | Version: 1.8
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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The extension of lookups to support transforms is great, but I'd like to
be able to order by a transformed field.
As a use case, let's say I define a length transform. I filter by length
such as {{{Song.objects.filter(title__length__gt=10)}}}, but I think it
makes sense that I ought to also be able to sort by this transform, for
instance: {{{Song.objects.all().order_by('title__length')}}}
The related ticket #24629 points out that Func expressions should be
usable as transforms. Although in 1.8 I could get the desired sort by
ordering by the Length func expression, I feel that the reverse should
also be true, that I should be able to order by a transform.
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Ticket URL: <https://code.djangoproject.com/ticket/24747>
Django <https://code.djangoproject.com/>
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