[Django] #24084: Alias related properties inside values()

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Jan 6, 2015, 1:33:42 AM1/6/15

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#24084: Alias related properties inside values()
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Reporter: iambibhas | Owner: nobody
Type: New feature | Status: new
Component: Database layer (models, ORM) | Version: master
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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Right now we can use values() to fetch properties like this -

{{{
>>> Entry.objects.values('blog')
[{'blog': 1}, ...]
}}}

But I have a case where I need to fetch a property from a related mode so
I'm doing this -

{{{
>>> Boundary.objects.values('id', 'school__liblangagg__class_name')
[{'school__liblangagg__class_name': 6, 'id': 8999},
{'school__liblangagg__class_name': 5, 'id': 8954},
{'school__liblangagg__class_name': 3, 'id': 9000},
{'school__liblangagg__class_name': 2, 'id': 8942},]
}}}

It'd be really convenient if I could alias the related property. Something
like this -

{{{
>>> Boundary.objects.values('id', ('class_name',
'school__liblangagg__class_name'))
[{'class_name': 6, 'id': 8999}, ... ]
}}}

So in place of the string representing the related property, we could have
a tuple (alias, related_string). The output looks a bit ugly to pass this
on to somewhere and it's a bit of work to iterate over all of them and
replace the key.

Does it seem like a feature worth considering?

--
Ticket URL: <https://code.djangoproject.com/ticket/24084>
Django <https://code.djangoproject.com/>
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Django

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Jan 6, 2015, 2:21:39 AM1/6/15

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#24084: Alias related properties inside values()

Easy pickings: 0 | UI/UX: 0

-------------------------------------+-------------------------------------
Changes (by charettes):

* status: new => closed
* needs_better_patch: => 0
* resolution: => duplicate
* needs_tests: => 0
* needs_docs: => 0