#36508: Asymmetry between exact and iexact when filtering JSON keys against None
-------------------------------------+-------------------------------------
     Reporter:  Jacob Walls          |                    Owner:  (none)
         Type:  Bug                  |                   Status:  new
    Component:  Database layer       |                  Version:  5.2
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:
     Keywords:  null, jsonfield      |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Description changed by Jacob Walls:

Old description:

> `exact` and `iexact` vary in their treatment of `None` when looking up
> JSON key paths:
> {{{
> optional_param = request.GET.get("param")
> qs1 = Model.objects.filter(json__key=optional_param)
> qs2 = Model.objects.filter(json__key__iexact=optional_param)
> }}}
>
> [https://dryorm.xterm.info/json-key-filter-none/run fiddle] showing
> `exact` queries return rows where the json key is null, but `iexact`
> queries do not (instead, they check for key existence, e.g.
> `__key__isnull`)
>
> Previous ticket regarding symmetry between `exact` and `iexact`: #21552
> Previous ticket regarding `iexact` on JSON key lookups: #27693

New description:

 `exact` and `iexact` vary in their treatment of `None` when looking up
 JSON key paths:
 {{{
 optional_param = request.GET.get("param", None)
 qs1 = Model.objects.filter(json__key=optional_param)
 qs2 = Model.objects.filter(json__key__iexact=optional_param)
 }}}

 [https://dryorm.xterm.info/json-key-filter-none/run fiddle] showing
 `exact` queries return rows where the json key is null, but `iexact`
 queries do not (instead, they check for key existence, e.g.
 `__key__isnull`)

 Previous ticket regarding symmetry between `exact` and `iexact`: #21552
 Previous ticket regarding `iexact` on JSON key lookups: #27693

--
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Ticket URL: <https://code.djangoproject.com/ticket/36508#comment:1>
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