#32344: Allow arbitrary `deconstructible` class properties to participate in
migrations
-------------------------------------+-------------------------------------
Reporter: Ryan | Owner: nobody
Vinzent |
Type: New | Status: new
feature |
Component: | Version: master
Migrations | Keywords: Migrations,
Severity: Normal | ModelState
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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In order to fully take advantage of a custom `SchemaEditor` class, I need
to apply some model level configuration. This configuration can be
implemented as a class property on the model, but during the migration,
all non-`Field` class properties are disregarded in the dynamically
constructed version of the model's state.
It would be nice if any serializable (or maybe only `deconstructible`)
class property were also able to be included in the migration, so I could
add something like this:
{{{#!python
class MyPostgresModel(models.Model):
postgres_options = PostgresOptions(...)
}}}
Currently, `postgres_options` in this case is not passed to the
`SchemaEditor.create_model()` call during the migration, even if it is
serializable. The usefulness of a custom `SchemaEditor` is hindered if it
is unable to see this extra model configuration during migrations, as this
is usually the only place that a `SchemaEditor` is invoked.
This could enable user-defined `ModelState` in migrations, and allow
third-party database backends to more easily participate in the migrations
framework.
--
Ticket URL: <https://code.djangoproject.com/ticket/32344>
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