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Code Issues 25 Releases Wiki Activity

[4.2.x] Refs #23528 -- Made cosmetic edits to swappable_dependency() docs.

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Mariusz Felisiak 2023-06-03 11:01:15 +01:00
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docs/topics/migrations.txt
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@ -224,14 +224,14 @@ Swappable dependencies
.. function:: django.db.migrations.swappable_dependency(value)
The ``swappable_dependency()`` function is used in migrations to declare
"swappable" dependencies on migrations in the app of the swapped-in model.
Currently, the first migration of this app and as a consequence the swapped-in
"swappable" dependencies on migrations in the app of the swapped-in model,
currently, on the first migration of this app. As a consequence, the swapped-in
model should be created in the initial migration. The argument ``value`` is a
string ``"<app label>.<model>"`` describing an app label and a model name, e.g.
``"myapp.MyModel"``.
By using ``swappable_dependency()``, you inform the migration framework that
the migration relies on a migration which sets up up a swappable model,
the migration relies on another migration which sets up a swappable model,
allowing for the possibility of substituting the model with a different
implementation in the future. This is typically used for referencing models
that are subject to customization or replacement, such as the custom user