[Django] #36727: Deprecate get_placeholder in favor of get_placeholder_sql

[Django]

#36727: Deprecate get_placeholder in favor of get_placeholder_sql
-------------------------------------+-------------------------------------
Reporter: Jacob Walls | Type:
| Cleanup/optimization
Status: new | Component: Database
| layer (models, ORM)
Version: dev | Severity: Normal
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
For consistency with other expressions that
[https://docs.djangoproject.com/en/6.0/releases/6.0/#custom-orm-
expressions-should-return-params-as-a-tuple return sql and params
separately] (e.g. `tuple[str, tuple]`), we should deprecate
`get_placeholder` for a `get_placeholder_sql` method that returns
`tuple[str, tuple]` and adapt `BaseSpatialField`, `get_geom_placeholder`,
and other call sites like `Value.as_sql` to make use of it.
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Ticket URL: <https://code.djangoproject.com/ticket/36727>
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[Django]

#36727: Deprecate get_placeholder in favor of get_placeholder_sql
-------------------------------------+-------------------------------------

Reporter: Jacob Walls | Owner: Simon
Type: | Charette
Cleanup/optimization | Status: assigned
Component: Database layer | Version: dev
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted

Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by Simon Charette):

* owner: (none) => Simon Charette
* stage: Unreviewed => Accepted
* status: new => assigned

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Ticket URL: <https://code.djangoproject.com/ticket/36727#comment:1>