Porting: [18.0][ADD] deltatech_product_reordering_limit (from 18.0)

deltatech_product_reordering_limit/__init__.py

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+from . import models

deltatech_product_reordering_limit/__manifest__.py

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+{
+    "name": "Product Reordering Limit",
+    "summary": "Custom reordering limits for products",
+    "version": "18.0.1.0.0",
+    "author": "Terrabit, Voicu Stefan",
+    "website": "https://www.terrabit.ro",
+    "category": "Inventory",
+    "depends": ["product", "stock"],
+    "license": "OPL-1",
+    "data": [
+        "views/product_template_view.xml",
+    ],
+    "installable": True,
+    "development_status": "Beta",
+    "maintainers": ["VoicuStefan2001"],
+}

deltatech_product_reordering_limit/models/__init__.py

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+from . import product_template

deltatech_product_reordering_limit/models/product_template.py

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+from odoo import api, fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    total_minimum = fields.Float(string="Total Minimum", default=0.0)
+    total_maximum = fields.Float(string="Total Maximum", default=0.0)
+
+    def _search_is_below_min(self, operator, value):
+        if operator not in ("=", "!=") or not isinstance(value, bool):
+            raise NotImplementedError("Unsupported operator or value for _search_is_below_min")
+
+        # We need to find templates where qty_available < total_minimum.
+        # Since we can't do this easily in a domain with a computed field vs another field,
+        # and a raw SQL might miss Odoo's complex stock logic (locations, etc.),
+        # but for a general "Below Minimum" filter, we can use a reasonable SQL approximation
+        # that aggregates variant quantities to the template level.
+
+        # We use a subquery to sum quantities from stock_quant grouped by product,
+        # then join with product_product to group by template.
+        # We only count internal locations as per requirement.
+        self.env.cr.execute("""
+            SELECT pt.id
+            FROM product_template pt
+            JOIN (
+                SELECT pp.product_tmpl_id, SUM(sq.qty) as total_qty_available
+                FROM product_product pp
+                LEFT JOIN (
+                    SELECT sq.product_id, SUM(sq.quantity) as qty
+                    FROM stock_quant sq
+                    JOIN stock_location sl ON sl.id = sq.location_id
+                    WHERE sl.usage = 'internal'
+                    GROUP BY sq.product_id
+                ) sq ON sq.product_id = pp.id
+                GROUP BY pp.product_tmpl_id
+            ) t_qty ON t_qty.product_tmpl_id = pt.id
+            WHERE pt.total_minimum > 0 AND COALESCE(t_qty.total_qty_available, 0.0) < pt.total_minimum
+        """)
+        ids = [r[0] for r in self.env.cr.fetchall()]
+
+        if (operator == "=" and value) or (operator == "!=" and not value):
+            return [("id", "in", ids)]
+        else:
+            return [("id", "not in", ids)]
+
+    is_below_min = fields.Boolean(
+        string="Is Below Minimum", compute="_compute_is_below_min", search="_search_is_below_min"
+    )
+
+    @api.depends("qty_available", "total_minimum")
+    def _compute_is_below_min(self):
+        for template in self:
+            # qty_available on template level in Odoo 18 (when called without specific context)
+            # aggregates qty_available of all its variants.
+            # Product variants' qty_available already filters by internal locations by default.
+            template.is_below_min = template.total_minimum > 0 and template.qty_available < template.total_minimum

deltatech_product_reordering_limit/pyproject.toml

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

deltatech_product_reordering_limit/views/product_template_view.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo>
+    <record id="product_template_form_view" model="ir.ui.view">
+        <field name="name">product.template.reordering.limit.form</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="product.product_template_form_view" />
+        <field name="arch" type="xml">
+            <group name="group_general" position="inside">
+                <field name="total_minimum" />
+                <field name="total_maximum" />
+            </group>
+        </field>
+    </record>
+
+    <record id="product_template_search_view" model="ir.ui.view">
+        <field name="name">product.template.reordering.limit.search</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="product.product_template_search_view" />
+        <field name="arch" type="xml">
+            <xpath expr="//filter[@name='filter_to_sell']" position="after">
+                <separator />
+                <filter string="Below Minimum" name="below_minimum" domain="[('is_below_min', '=', True)]" />
+            </xpath>
+        </field>
+    </record>
+</odoo>