[ADD] purchase_order_line_merge: merge PO lines into a new purchase order

purchase_order_line_merge/README.rst

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+=========================
+Purchase Order Line Merge
+=========================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:25882d6ab121930b28d392f5c1a2f6172ff84d9a2a703fff95dd56a01278ec45
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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/18.0/purchase_order_line_merge
+    :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-18-0/purchase-workflow-18-0-purchase_order_line_merge
+    :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=18.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module allows users to select multiple purchase order lines from
+different purchase orders and merge them into a single new purchase
+order.
+
+Unlike ``purchase_merge`` which works at the order level, this module
+operates at the line level, giving more granular control over which
+specific lines to consolidate.
+
+Key features:
+
+-  Lines with the same product, unit price, unit of measure, and taxes
+   are automatically grouped into a single line on the resulting
+   purchase order.
+-  The default quantity to merge considers both invoiced and received
+   amounts, defaulting to the available (uninvoiced/unreceived)
+   quantity.
+-  The unit price is editable in the wizard, allowing price adjustments
+   before creating the new order.
+-  Partial merges are supported: the remaining quantity stays on the
+   original order.
+-  Orders that reach zero amount after the merge are automatically
+   cancelled.
+
+This module also adds the **Qty Invoiced** and **Qty Received** columns
+to the Purchase Order Lines list view for better visibility.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+1. Go to **Purchase > Orders > Purchase Order Lines**.
+2. Select the lines you want to merge.
+3. Click **Action > Merge into Purchase Order**.
+4. In the wizard, review or change the vendor and order date.
+5. Adjust the quantities and/or unit prices if needed. The default
+   quantity is the available amount (original minus the greater of
+   invoiced or received).
+6. Click **Merge Lines** to create the new purchase order.
+
+The original purchase order lines will have their quantities reduced by
+the merged amount. If all lines of a purchase order reach zero, the
+order is automatically cancelled.
+
+Validations will prevent merging lines from different currencies,
+different warehouses, or cancelled/locked orders.
+
+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_line_merge%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
+-------
+
+* SpearHead
+
+Contributors
+------------
+
+-  `SpearHead <https://spearhead.global/>`__
+
+   -  Ricardo Jara <rjara@spearhead.global>
+
+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/purchase-workflow <https://github.com/OCA/purchase-workflow/tree/18.0/purchase_order_line_merge>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

purchase_order_line_merge/__init__.py

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+from . import wizard

purchase_order_line_merge/__manifest__.py

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+{
+    "name": "Purchase Order Line Merge",
+    "version": "18.0.1.0.0",
+    "author": "SpearHead, Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/purchase-workflow",
+    "license": "AGPL-3",
+    "category": "Inventory/Purchase",
+    "summary": "Merge purchase order lines into a new purchase order",
+    "depends": ["purchase_order_line_menu", "purchase_stock"],
+    "data": [
+        "security/ir.model.access.csv",
+        "wizard/purchase_order_line_merge_views.xml",
+    ],
+    "installable": True,
+}

purchase_order_line_merge/pyproject.toml

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

purchase_order_line_merge/readme/CONTRIBUTORS.md

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+- [SpearHead](https://spearhead.global/)
+
+  - Ricardo Jara \<<rjara@spearhead.global>\>

purchase_order_line_merge/readme/DESCRIPTION.md

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+This module allows users to select multiple purchase order lines from
+different purchase orders and merge them into a single new purchase order.
+
+Unlike `purchase_merge` which works at the order level, this module
+operates at the line level, giving more granular control over which
+specific lines to consolidate.
+
+Key features:
+
+- Lines with the same product, unit price, unit of measure, and taxes are
+  automatically grouped into a single line on the resulting purchase order.
+- The default quantity to merge considers both invoiced and received
+  amounts, defaulting to the available (uninvoiced/unreceived) quantity.
+- The unit price is editable in the wizard, allowing price adjustments
+  before creating the new order.
+- Partial merges are supported: the remaining quantity stays on the
+  original order.
+- Orders that reach zero amount after the merge are automatically
+  cancelled.
+
+This module also adds the **Qty Invoiced** and **Qty Received** columns
+to the Purchase Order Lines list view for better visibility.

purchase_order_line_merge/readme/USAGE.md

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+1. Go to **Purchase > Orders > Purchase Order Lines**.
+2. Select the lines you want to merge.
+3. Click **Action > Merge into Purchase Order**.
+4. In the wizard, review or change the vendor and order date.
+5. Adjust the quantities and/or unit prices if needed.
+   The default quantity is the available amount (original minus the
+   greater of invoiced or received).
+6. Click **Merge Lines** to create the new purchase order.
+
+The original purchase order lines will have their quantities reduced by
+the merged amount. If all lines of a purchase order reach zero, the
+order is automatically cancelled.
+
+Validations will prevent merging lines from different currencies,
+different warehouses, or cancelled/locked orders.

purchase_order_line_merge/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_purchase_order_line_merge,purchase.order.line.merge,model_purchase_order_line_merge,purchase.group_purchase_user,1,1,1,0
+access_purchase_order_line_merge_line,purchase.order.line.merge.line,model_purchase_order_line_merge_line,purchase.group_purchase_user,1,1,1,0