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[IMP] core: SQLObject replaces _sql_constraints

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task-3390431

closes odoo/documentation#11071

Related: odoo/odoo#175783
Related: odoo/enterprise#68589
Signed-off-by: Krzysztof Magusiak (krma) <krma@odoo.com>
This commit is contained in:
Krzysztof Magusiak
2024-09-23 14:41:41 +00:00
parent 381ae7793b
commit 6395455f0b
6 changed files with 43 additions and 18 deletions
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12
content/developer/tutorials/backend.rst
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@@ -797,7 +797,9 @@ Model constraints
Odoo provides two ways to set up automatically verified invariants:
:func:`Python constraints <odoo.api.constrains>` and
:attr:`SQL constraints <odoo.models.Model._sql_constraints>`.
:attr:`SQL constraints <odoo.models.Constraint>`.
In a similar way, you can add more complex
:attr:`SQL indexes <odoo.models.Index>`.
A Python constraint is defined as a method decorated with
:func:`~odoo.api.constrains`, and invoked on a recordset. The decorator
@@ -819,11 +821,9 @@ raise an exception if its invariant is not satisfied::
Add a constraint that checks that the instructor is not present in the
attendees of his/her own session.
SQL constraints are defined through the model attribute
:attr:`~odoo.models.Model._sql_constraints`. The latter is assigned to a list
of triples of strings ``(name, sql_definition, message)``, where ``name`` is a
valid SQL constraint name, ``sql_definition`` is a table_constraint_ expression,
and ``message`` is the error message.
Constraints and indexes are defined using:
:attr:`~odoo.models.Constraint`,
:attr:`~odoo.models.Index` and :attr:`~odoo.models.UniqueIndex`.
.. exercise:: Add SQL constraints