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Fixed #30581 -- Added support for Meta.constraints validation.

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Thanks Simon Charette, Keryn Knight, and Mariusz Felisiak for reviews.
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Gagaro 2022-01-31 16:04:13 +01:00 • committed by Mariusz Felisiak
parent 441103a04d
commit 667105877e
17 changed files with 852 additions and 88 deletions
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19
docs/ref/contrib/postgres/constraints.txt
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@ -12,7 +12,7 @@ PostgreSQL supports additional data integrity constraints available from the
``ExclusionConstraint``
=======================
.. class:: ExclusionConstraint(*, name, expressions, index_type=None, condition=None, deferrable=None, include=None, opclasses=())
.. class:: ExclusionConstraint(*, name, expressions, index_type=None, condition=None, deferrable=None, include=None, opclasses=(), violation_error_message=None)
Creates an exclusion constraint in the database. Internally, PostgreSQL
implements exclusion constraints using indexes. The default index type is
@ -27,6 +27,14 @@ PostgreSQL supports additional data integrity constraints available from the
:exc:`~django.db.IntegrityError` is raised. Similarly, when update
conflicts with an existing row.
Exclusion constraints are checked during the :ref:`model validation
<validating-objects>`.
.. versionchanged:: 4.1
In older versions, exclusion constraints were not checked during model
validation.
``name``
--------
@ -165,6 +173,15 @@ creates an exclusion constraint on ``circle`` using ``circle_ops``.
:class:`OpClass() <django.contrib.postgres.indexes.OpClass>` in
:attr:`~ExclusionConstraint.expressions`.
``violation_error_message``
---------------------------
.. versionadded:: 4.1
The error message used when ``ValidationError`` is raised during
:ref:`model validation <validating-objects>`. Defaults to
:attr:`.BaseConstraint.violation_error_message`.
Examples
--------