[ADD] Addon: sale_order_total_quantity.

sale_order_total_quantity/README.rst

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+=========================
+Sale Order Total Quantity
+=========================
+
+KMEE
+
+Purpose
+=======
+
+This module does this and that...
+
+Explain the use case.
+
+Configuration
+=============
+
+To configure this module, you need to:
+
+#. Go to ...
+
+Usage
+=====
+
+To use this module, you need to:
+
+#. Go to ...
+
+
+How to test
+===========
+
+...

sale_order_total_quantity/__init__.py

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+from . import models

sale_order_total_quantity/__manifest__.py

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+# Copyright 2024 KMEE
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Sale Order Total Quantity",
+    "summary": """KMEE""",
+    "version": "15.0.1.0.0",
+    "license": "LGPL-3",
+    "author": "KMEE",
+    "website": "https://github.com/KMEE/kmee-odoo-addons",
+    "depends": [
+        "sale",
+    ],
+    "data": [
+        "views/sale_order.xml",
+    ],
+    "demo": [],
+}

sale_order_total_quantity/models/__init__.py

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+from . import sale_order

sale_order_total_quantity/models/sale_order.py

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+# Copyright 2024 KMEE
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class SaleOrder(models.Model):
+
+    _inherit = "sale.order"
+
+    total_units = fields.Integer(compute="_compute_total_units", store=True)
+
+    @api.depends("order_line.product_uom_qty")
+    def _compute_total_units(self):
+        for order in self:
+            total_units = 0
+            for line in order.order_line:
+                total_units += line.product_uom_qty
+            order.total_units = total_units

sale_order_total_quantity/views/sale_order.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright 2024 KMEE
+     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
+<odoo>
+
+    <record model="ir.ui.view" id="view_order_agent_form_inherit">
+        <field name="model">sale.order</field>
+        <field name="name">sale.agent.order.inherit.form</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+        <field name="tax_totals_json" position="after">
+                <field name="total_units" />
+            </field>
+        </field>
+    </record>
+
+</odoo>

setup/sale_order_total_quantity/odoo/addons/sale_order_total_quantity

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+../../../../sale_order_total_quantity

setup/sale_order_total_quantity/setup.py

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+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)