[18.0][MIG] product_attribute_custom_variant

product_attribute_custom_value_variant/README.rst

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+========================================
+Create product variant from custom value
+========================================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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%2Fproduct--attribute-lightgray.png?logo=github
+    :target: https://github.com/OCA/product-attribute/tree/18.0/product_attribute_custom_value_variant
+    :alt: OCA/product-attribute
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/product-attribute-18-0/product-attribute-18-0-product_attribute_custom_value_variant
+    :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/product-attribute&target_branch=18.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+Create variants when configured custom attributes are used.
+
+The created variants are useful to retrieve the stock quantity or for
+purchase.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Configuration
+=============
+
+In any custom attribute value, enable Create custom variant.
+
+Usage
+=====
+
+When a product template is added to a sale order line, the configured
+custom values become real attribute values. Here is an example:
+
+1. Create an attribute "Length (cm)"
+2. Add some values to the attribute:
+
+   - 5
+   - 10
+   - Custom
+
+3. For the "Custom" value, enable "Free text" and "Create custom
+   variant" (added by this module)
+4. Create a product template "Glass" having the created attribute and
+   all its values
+5. Create a sale order that includes the product template
+6. Set the value 42 for the attribute "Length (cm)"
+
+With the above steps, this module creates:
+
+- | A new attribute value "42" for the attribute "Length (cm)"
+  | This attribute value is not linked to the product template, so it
+    does not appear as a choice when the template is sold.
+
+- A variant for the template, linked to the created attribute value
+
+The created variant can then be used to retrieve its stock quantity or
+to purchase that exact product variant that had been sold.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/product-attribute/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/product-attribute/issues/new?body=module:%20product_attribute_custom_value_variant%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
+-------
+
+* Aion Tech
+
+Contributors
+------------
+
+- Simone Rubino - Aion Tech
+- Denis Roussel [email protected]
+
+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.
+
+This module is part of the `OCA/product-attribute <https://github.com/OCA/product-attribute/tree/18.0/product_attribute_custom_value_variant>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

product_attribute_custom_value_variant/__init__.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import models

product_attribute_custom_value_variant/__manifest__.py

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+# Copyright 2025 Simone Rubino - Aion Tech
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Create product variant from custom value",
+    "summary": "When a custom value is assigned, create a variant instead.",
+    "version": "18.0.1.0.0",
+    "website": "https://github.com/OCA/product-attribute",
+    "author": "Aion Tech, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "category": "Sales/Sales",
+    "depends": [
+        "product",
+    ],
+    "data": [
+        "views/product_attribute_value_views.xml",
+    ],
+}

product_attribute_custom_value_variant/models/__init__.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import product_attribute_value
+from . import product_attribute_custom_value
+from . import product_attribute
+from . import product_product

product_attribute_custom_value_variant/models/product_attribute.py

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+# Copyright 2025 Simone Rubino - Aion Tech
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class ProductAttribute(models.Model):
+    _inherit = "product.attribute"
+
+    def _prepare_variant_custom_attribute_value(self, custom_value):
+        self.ensure_one()
+        return {
+            "attribute_id": self.id,
+            "name": custom_value,
+        }
+
+    def _get_variant_custom_attribute_value(self, custom_value):
+        self.ensure_one()
+        new_attribute_value = self.env["product.attribute.value"].search(
+            [
+                (
+                    "attribute_id",
+                    "=",
+                    self.id,
+                ),
+                ("name", "=", custom_value),
+            ],
+            limit=1,
+        )
+        if not new_attribute_value:
+            new_attribute_value = self.env["product.attribute.value"].create(
+                self._prepare_variant_custom_attribute_value(custom_value)
+            )
+
+        return new_attribute_value

product_attribute_custom_value_variant/models/product_attribute_custom_value.py

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+# Copyright 2025 Simone Rubino - Aion Tech
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+from odoo.addons.product.models.product_attribute_custom_value import (
+    ProductAttributeCustomValue,
+)
+from odoo.addons.product.models.product_attribute_value import ProductAttributeValue
+
+
+class ProductAttribute(models.Model):
+    _inherit = "product.attribute.custom.value"
+
+    def _get_new_and_unlink_custom_attribute(
+        self,
+    ) -> tuple[ProductAttributeValue, ProductAttributeCustomValue]:
+        """
+        Retrieve the new custom attribute from custom value and
+        the one to remove
+        """
+        values_to_unlink = self.env["product.attribute.custom.value"].browse()
+        new_attribute_values = self.env["product.attribute.value"].browse()
+        # Create new attribute values for each "Create custom variant" custom value
+        for custom_attribute_value in self:
+            template_attribute_value = (
+                custom_attribute_value.custom_product_template_attribute_value_id
+            )
+            attribute_value = template_attribute_value.product_attribute_value_id
+            if attribute_value.create_custom_variant:
+                attribute = template_attribute_value.attribute_id
+                new_attribute_value = attribute._get_variant_custom_attribute_value(
+                    custom_attribute_value.custom_value,
+                )
+                new_attribute_values |= new_attribute_value
+                template_attribute_value.attribute_line_id.value_ids |= (
+                    new_attribute_value
+                )
+
+                values_to_unlink |= custom_attribute_value
+        return new_attribute_values, values_to_unlink

product_attribute_custom_value_variant/models/product_attribute_value.py

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+# Copyright 2025 Simone Rubino - Aion Tech
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import _, api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class ProductAttributeValue(models.Model):
+    _inherit = "product.attribute.value"
+
+    create_custom_variant = fields.Boolean(
+        string="Create custom variant",
+        help="When this custom attribute is used, \
+        a new value and variant will be generated.",
+    )
+
+    @api.constrains(
+        "create_custom_variant",
+        "is_custom",
+    )
+    def _constrain_create_custom_variant(self):
+        for value in self:
+            if value.create_custom_variant and not value.is_custom:
+                raise ValidationError(
+                    _("'Create custom variant' can only be set on custom values")
+                )

product_attribute_custom_value_variant/models/product_product.py

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+# Copyright 2025 Simone Rubino - Aion Tech
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+from collections.abc import Generator
+from contextlib import contextmanager
+
+from odoo import models
+
+from odoo.addons.product.models.product_product import ProductProduct as ProductBase
+
+
+class ProductProduct(models.Model):
+    _inherit = "product.product"
+
+    @contextmanager
+    def _get_attribute_custom_value_variant(
+        self, custom_values
+    ) -> Generator[ProductBase | None]:
+        """
+        This will retrieve the new created variant as context manager return.
+
+        At the end, it will:
+
+            - Remove the attributes
+            - Remove the
+        """
+
+        new_attribute_values, custom_values_to_unlink = (
+            custom_values._get_new_and_unlink_custom_attribute()
+        )
+        # If new attribute values have been created,
+        # use them to create a new variant and set it in the line
+        attribute_lines = self.product_tmpl_id.attribute_line_ids
+        custom_combination = attribute_lines.product_template_value_ids.filtered(
+            lambda ptav, new=new_attribute_values: ptav.product_attribute_value_id
+            in new
+        )
+        if custom_combination:
+            new_variant = self._create_custom_attribute_combination(custom_combination)
+            yield new_variant
+            # The new attribute values must not be available for new models
+            for attribute_line in attribute_lines:
+                attribute_line.with_context(
+                    no_remove_custom_variants=new_variant.ids,
+                ).value_ids -= attribute_line.value_ids & new_attribute_values
+        custom_values_to_unlink.unlink()
+
+    def _create_custom_attribute_combination(self, custom_combination):
+        self.ensure_one()
+        variant_combination = self.product_template_attribute_value_ids
+        new_variant_combination = (
+            variant_combination.filtered(
+                lambda ptav: not ptav.product_attribute_value_id.create_custom_variant
+            )
+            | custom_combination
+        )
+        new_variant = self.product_tmpl_id._create_product_variant(
+            new_variant_combination
+        )
+        return new_variant
+
+    def _unlink_or_archive(self, check_access=True):
+        custom_variants_to_keep_ids = self.env.context.get("no_remove_custom_variants")
+        return super(
+            ProductProduct, self - self.browse(custom_variants_to_keep_ids)
+        )._unlink_or_archive(check_access=check_access)

product_attribute_custom_value_variant/pyproject.toml

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

product_attribute_custom_value_variant/readme/CONFIGURE.md

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+In any custom attribute value, enable Create custom variant.

product_attribute_custom_value_variant/readme/CONTRIBUTORS.md

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+- Simone Rubino - Aion Tech
+- Denis Roussel <[email protected]>

product_attribute_custom_value_variant/readme/DESCRIPTION.md

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+Create variants when configured custom attributes are used.
+
+The created variants are useful to retrieve the stock quantity or for
+purchase.

product_attribute_custom_value_variant/readme/USAGE.md

@@ -0,0 +1,25 @@
+When a product template is added to a sale order line, the configured
+custom values become real attribute values. Here is an example:
+
+1.  Create an attribute "Length (cm)"
+2.  Add some values to the attribute:
+    - 5
+    - 10
+    - Custom
+3.  For the "Custom" value, enable "Free text" and "Create custom variant"
+    (added by this module)
+4.  Create a product template "Glass" having the created attribute and
+    all its values
+5.  Create a sale order that includes the product template
+6.  Set the value 42 for the attribute "Length (cm)"
+
+With the above steps, this module creates:
+
+- A new attribute value "42" for the attribute "Length (cm)"  
+  This attribute value is not linked to the product template, so it does
+  not appear as a choice when the template is sold.
+
+- A variant for the template, linked to the created attribute value
+
+The created variant can then be used to retrieve its stock quantity or
+to purchase that exact product variant that had been sold.