[ADD] new module purchase_order_qty_change_no_zero

purchase_order_qty_change_no_zero/README.rst

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+=================================
+Purchase Order Qty change no zero
+=================================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:78e6ea89b38a0718bf2c811a5e70c706101c4a3d14813cf71c1b6454d74e4470
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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%2Fpurchase--workflow-lightgray.png?logo=github
+    :target: https://github.com/OCA/purchase-workflow/tree/14.0/purchase_order_qty_change_no_zero
+    :alt: OCA/purchase-workflow
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/purchase-workflow-14-0/purchase-workflow-14-0-purchase_order_qty_change_no_zero
+    :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/purchase-workflow&target_branch=14.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module prevent to set the unit price to zero if only quantity has changed in purchase order line.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+To use this module, you need to:
+
+#. Create a new purchase order.
+#. Add product line and set custom unit price.
+#. Save purchase order.
+#. Edit purchase order and change quantity.
+#. The unit price is the new computed price only if it is not zero.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/purchase-workflow/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/purchase-workflow/issues/new?body=module:%20purchase_order_qty_change_no_zero%0Aversion:%2014.0%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
+~~~~~~~
+
+* Akretion
+
+Contributors
+~~~~~~~~~~~~
+
+* `Akretion <https://www.akretion.com>`_:
+
+  * Clément Mombereau
+
+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-clementmbr| image:: https://github.com/clementmbr.png?size=40px
+    :target: https://github.com/clementmbr
+    :alt: clementmbr
+
+Current `maintainer <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-clementmbr| 
+
+This module is part of the `OCA/purchase-workflow <https://github.com/OCA/purchase-workflow/tree/14.0/purchase_order_qty_change_no_zero>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

purchase_order_qty_change_no_zero/__init__.py

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+from . import models

purchase_order_qty_change_no_zero/__manifest__.py

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+# Copyright 2024 Akretion - Clément Mombereau
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+{
+    "name": "Purchase Order Qty change no zero",
+    "summary": "Prevent unit price to be zero when purchase order line quantity is changed",
+    "version": "14.0.1.0.0",
+    "category": "Sale Workflow",
+    "website": "https://github.com/OCA/purchase-workflow",
+    "author": "Akretion, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "application": False,
+    "installable": True,
+    "depends": ["purchase"],
+    "maintainers": ["clementmbr"],
+}

purchase_order_qty_change_no_zero/models/__init__.py

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+from . import purchase_order

purchase_order_qty_change_no_zero/models/purchase_order.py

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+# Copyright 2024 Akretion - Clément Mombereau
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+# from pprint import pprint
+
+from odoo import models
+
+
+class PurchaseOrderLine(models.Model):
+    _inherit = "purchase.order.line"
+
+    def onchange(self, values, field_name, field_onchange):
+        res = super().onchange(values, field_name, field_onchange)
+        # print("\n----------- in onchange")
+        # print("field_name")
+        # pprint(field_name)
+        # print("values+++++")
+        # pprint(values)
+        # print("field_onchange+++++")
+        # pprint(field_onchange)
+        # print("res+++++")
+        # pprint(res)
+        # print("\n")
+
+        if "product_qty" in field_name and "value" in res:
+            old_price_unit = values.get("price_unit")
+            new_price_unit = res["value"].get("price_unit")
+            if old_price_unit and not new_price_unit:
+                res["value"].update(
+                    {
+                        "price_unit": old_price_unit,
+                        # TODO : how to update price_subtotal and price_total with
+                        # old_price_unit and new qty?
+                        # "price_subtotal": values["price_subtotal"],
+                        # "price_total": values["price_total"],
+                    }
+                )
+
+        return res

purchase_order_qty_change_no_zero/readme/CONTRIBUTORS.rst

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+* `Akretion <https://www.akretion.com>`_:
+
+  * Clément Mombereau

purchase_order_qty_change_no_zero/readme/DESCRIPTION.rst

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+This module prevent to set the unit price to zero if only quantity has changed in purchase order line.

purchase_order_qty_change_no_zero/readme/USAGE.rst

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+To use this module, you need to:
+
+#. Create a new purchase order.
+#. Add product line and set custom unit price.
+#. Save purchase order.
+#. Edit purchase order and change quantity.
+#. The unit price is the new computed price only if it is not zero.