Merge PR #2181 into 18.0

Signed-off-by NL66278

Author: OCA-git-bot

partner_rank_single/README.rst

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+===================
+Partner Rank Single
+===================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:09d036807482ee3c651a0348ac22d5a60ddd2298c0415edcb6f93862ac76ead3
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fpartner--contact-lightgray.png?logo=github
+    :target: https://github.com/OCA/partner-contact/tree/18.0/partner_rank_single
+    :alt: OCA/partner-contact
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/partner-contact-18-0/partner-contact-18-0-partner_rank_single
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/partner-contact&target_branch=18.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module introduces a constraint to ensure that a contact cannot
+simultaneously be both a customer and a supplier.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/partner-contact/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/partner-contact/issues/new?body=module:%20partner_rank_single%0Aversion:%2018.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Camptocamp
+
+Contributors
+------------
+
+- Ivan Todorovich <ivan.todorovich@camptocamp.com>
+- Maksym Yankin <maksym.yankin@camptocamp.com>
+
+Other credits
+-------------
+
+- Camptocamp
+
+Maintainers
+-----------
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+.. |maintainer-ivantodorovich| image:: https://github.com/ivantodorovich.png?size=40px
+    :target: https://github.com/ivantodorovich
+    :alt: ivantodorovich
+.. |maintainer-yankinmax| image:: https://github.com/yankinmax.png?size=40px
+    :target: https://github.com/yankinmax
+    :alt: yankinmax
+
+Current `maintainers <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-ivantodorovich| |maintainer-yankinmax| 
+
+This module is part of the `OCA/partner-contact <https://github.com/OCA/partner-contact/tree/18.0/partner_rank_single>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

partner_rank_single/__init__.py

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+from . import models

partner_rank_single/__manifest__.py

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+# Copyright 2025 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+{
+    "name": "Partner Rank Single",
+    "summary": "Introduce single rank for partners.",
+    "version": "18.0.1.0.0",
+    "category": "Partner Management",
+    "website": "https://github.com/OCA/partner-contact",
+    "author": "Camptocamp, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "installable": True,
+    "maintainers": ["ivantodorovich", "yankinmax"],
+    "depends": ["account"],
+}

partner_rank_single/models/__init__.py

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+from . import res_partner

partner_rank_single/models/res_partner.py

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+# Copyright 2025 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, models
+from odoo.exceptions import ValidationError
+
+
+class Contact(models.Model):
+    _inherit = "res.partner"
+
+    @api.constrains("customer_rank", "supplier_rank")
+    def _constrains_single_rank(self):
+        for record in self:
+            if record.customer_rank > 0 and record.supplier_rank > 0:
+                raise ValidationError(
+                    self.env._("A contact cannot be both a customer and a supplier.")
+                )
+
+    def _increase_rank(self, field, n=1):
+        # OVERRIDE: to check single rank
+        # Because of direct SQL update in the super method
+        res = super()._increase_rank(field, n=n)
+        self._constrains_single_rank()
+        return res

partner_rank_single/pyproject.toml

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+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"

partner_rank_single/readme/CONTRIBUTORS.md

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+- Ivan Todorovich \<<ivan.todorovich@camptocamp.com>\>
+- Maksym Yankin \<<maksym.yankin@camptocamp.com>\>

partner_rank_single/readme/CREDITS.md

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+- Camptocamp

partner_rank_single/readme/DESCRIPTION.md

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+This module introduces a constraint to ensure that a contact cannot simultaneously be both a customer and a supplier.