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Refs #33342 -- Deprecated ExclusionConstraint.opclasses.

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Hannes Ljungberg 2021-12-08 21:28:08 +01:00 • committed by Mariusz Felisiak
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28
docs/ref/contrib/postgres/constraints.txt
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@ -53,10 +53,22 @@ operators with strings. For example::
Only commutative operators can be used in exclusion constraints.
The :class:`OpClass() <django.contrib.postgres.indexes.OpClass>` expression can
be used to specify a custom `operator class`_ for the constraint expressions.
For example::
expressions=[
(OpClass('circle', name='circle_ops'), RangeOperators.OVERLAPS),
]
creates an exclusion constraint on ``circle`` using ``circle_ops``.
.. versionchanged:: 4.1
Support for the ``OpClass()`` expression was added.
.. _operator class: https://www.postgresql.org/docs/current/indexes-opclass.html
``index_type``
--------------
@ -147,19 +159,11 @@ For example::
creates an exclusion constraint on ``circle`` using ``circle_ops``.
Alternatively, you can use
:class:`OpClass() <django.contrib.postgres.indexes.OpClass>` in
:attr:`~ExclusionConstraint.expressions`::
.. deprecated:: 4.1
ExclusionConstraint(
name='exclude_overlapping_opclasses',
expressions=[(OpClass('circle', 'circle_ops'), RangeOperators.OVERLAPS)],
)
.. versionchanged:: 4.1
Support for specifying operator classes with the ``OpClass()`` expression
was added.
The ``opclasses`` parameter is deprecated in favor of using
:class:`OpClass() <django.contrib.postgres.indexes.OpClass>` in
:attr:`~ExclusionConstraint.expressions`.
Examples
--------