[FIX] nfu_sale_order_batch_packaging: add float_is_zero import and use uom precision instead of hardcoded 0.01

nfu_sale_order_batch_packaging/README.rst

@@ -25,6 +25,8 @@ NFU Sale Order Batch Packaging
 This module adds a minium and a maximum order quantity field to Sale Orders
 and adds a packaging default to sale order batch.
 
+It adds an autosplitting methode that respects the maximum ordered qty for every order and spreads the open packeges evenly over all orders.
+
 **Table of contents**
 
 .. contents::
@@ -33,23 +35,24 @@ and adds a packaging default to sale order batch.
 Changelog
 =========
 
-- 0.0.1: Initial module.
-- 1.0.0: rename to nfu_sale_order_batch_packaging
-- 1.1.0: Live
-- 1.2.0: Add regeneration action for batch products
-- 1.2.1: refactoring
-- 1.3.0: add packaging states
-- 1.3.1: add open_max_qty
-- 1.3.2: fix color indicator
-- 1.3.3: Enable packagings on installation
-- 1.3.4: 
+- 16.0.0.0.1: Initial module.
+- 16.0.1.0.0: rename to nfu_sale_order_batch_packaging
+- 16.0.1.16.0.1.0: Live
+- 16.0.1.2.0: Add regeneration action for batch products
+- 16.0.1.2.1: refactoring
+- 16.0.1.3.0: add packaging states
+- 16.0.1.3.1: add open_max_qty
+- 16.0.1.3.2: fix color indicator
+- 16.0.1.3.3: Enable packagings on installation
+- 16.0.1.3.4: 
     - on creation set max_qty to product_uom_qty if not set
     - remove zero exception for max_qty
     - store open_packaging_qty on batch product module to make it sortable
     - always adjust max_qty to be at least uom_qty except you only set max qty
-- 1.3.4: store all quantities and round open values
-- 1.3.6: make sure packages are readable by the user
-- 1.3.7: really make sure packages are readable by the user
+- 16.0.1.3.4: store all quantities and round open values
+- 16.0.1.3.6: make sure packages are readable by the user
+- 16.0.1.3.7: really make sure packages are readable by the user
+- 16.0.1.4.0: Add automatic batch fillup
 
 Bug Tracker
 ===========

nfu_sale_order_batch_packaging/__init__.py

@@ -1 +1,18 @@
 from . import models
+from . import wizard
+from odoo import api, SUPERUSER_ID
+
+
+def post_init_hook(cr, registry):
+    env = api.Environment(cr, SUPERUSER_ID, {})
+    stueck = env.ref(
+        "nfu_sale_order_batch_packaging.product_uom_stueck",
+        raise_if_not_found=False,
+    )
+    if not stueck:
+        return
+    imd = env["ir.model.data"].search(
+        [("module", "=", "_import_"), ("name", "=", "uom.product_uom_piece")]
+    )
+    if imd:
+        imd.write({"res_id": stueck.id})

nfu_sale_order_batch_packaging/__manifest__.py

@@ -4,13 +4,18 @@
     "author": "BAKEUP",
     "website": "https://www.bakeup.org",
     "category": "Sale",
-    "version": "16.0.1.3.7",
+    "version": "16.0.1.4.0",
     "depends": ["sale", "sale_order_batch"],
     "data": [
+        "security/ir.model.access.csv",
         "data/ir_config_parameter.xml",
+        "data/uom_data.xml",
+        "wizard/sale_order_batch_packaging_fill_views.xml",
+        "views/uom_uom_views.xml",
         "views/sale_order_views.xml",
         "views/sale_order_batch_views.xml",
         "views/sale_order_batch_product_views.xml",
     ],
     "license": "LGPL-3",
+    "post_init_hook": "post_init_hook",
 }

nfu_sale_order_batch_packaging/data/uom_data.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="uom.product_uom_unit" model="uom.uom">
+        <field name="batch_fill_precision">1.0</field>
+    </record>
+
+    <record id="product_uom_stueck" model="uom.uom">
+        <field name="name">Stück</field>
+        <field name="category_id" ref="uom.product_uom_categ_unit"/>
+        <field name="uom_type">smaller</field>
+        <field name="rounding">0.01</field>
+        <field name="ratio">1.0</field>
+        <field name="batch_fill_precision">1.0</field>
+    </record>
+</odoo>

nfu_sale_order_batch_packaging/i18n/de.po

@@ -0,0 +1,274 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* nfu_sale_order_batch_packaging
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 16.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2026-05-29 21:37+0000\n"
+"PO-Revision-Date: 2026-05-29 21:37+0000\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__batch_id
+msgid "Batch"
+msgstr "Charge"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_uom_uom__batch_fill_precision
+msgid "Batch Fill Precision"
+msgstr "Füllgenauigkeit"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_sale_order_batch_packaging_fill
+msgid "Batch Packaging Auto-Fill Wizard"
+msgstr "Assistent zur automatischen Befüllung"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_sale_order_batch_packaging_fill_line
+msgid "Batch Packaging Auto-Fill Wizard Line"
+msgstr ""
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_sale_order_batch_packaging_fill_zero_line
+msgid "Batch Packaging Auto-Fill Zero-Out Line"
+msgstr ""
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__batch_product_id
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__batch_product_id
+msgid "Batch Product"
+msgstr "Sammelprodukt"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_line__batch_uom_max_qty
+msgid "Batch UOM Max Qty"
+msgstr ""
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_line__batch_uom_qty
+msgid "Batch UOM Qty"
+msgstr ""
+
+#. module: nfu_sale_order_batch_packaging
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_sale_order_batch_packaging_fill_form
+msgid "Cancel"
+msgstr "Abbrechen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_sale_order_batch_packaging_fill_form
+msgid "Confirm"
+msgstr "Bestätigen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__create_uid
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__create_uid
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__create_uid
+msgid "Created by"
+msgstr "Erstellt von"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__create_date
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__create_date
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__create_date
+msgid "Created on"
+msgstr "Erstellt am"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__display_name
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__display_name
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__display_name
+msgid "Display Name"
+msgstr "Anzeigename"
+
+#. module: nfu_sale_order_batch_packaging
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_order_batch_form
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_sale_order_batch_packaging_fill_form
+msgid "Fill Packages"
+msgstr "Pakete befüllen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_order_batch_form
+msgid "Open Products"
+msgstr "Offene Produkte"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields.selection,name:nfu_sale_order_batch_packaging.selection__sale_order_batch_product__open_packaging_state__full
+msgid "Full"
+msgstr "Voll"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__has_fill_lines
+msgid "Has Fill Lines"
+msgstr "Hat Füllzeilen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch__has_fillable_packages
+msgid "Has Fillable Packages"
+msgstr "Hat befüllbare Pakete"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch__has_qty_adjusted
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_product__has_qty_adjusted
+msgid "Has Qty Adjusted"
+msgstr "Menge angepasst"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__has_zero_lines
+msgid "Has Zero Lines"
+msgstr "Hat Nullzeilen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__id
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__id
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__id
+msgid "ID"
+msgstr "ID"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__keep_qty
+msgid "Keep"
+msgstr "Behalten"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill____last_update
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line____last_update
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line____last_update
+msgid "Last Modified on"
+msgstr "Zuletzt geändert am"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__write_uid
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__write_uid
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__write_uid
+msgid "Last Updated by"
+msgstr "Zuletzt aktualisiert von"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__write_date
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__write_date
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__write_date
+msgid "Last Updated on"
+msgstr "Zuletzt aktualisiert am"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields.selection,name:nfu_sale_order_batch_packaging.selection__sale_order_batch_product__open_packaging_state__last_open
+msgid "Last package open"
+msgstr "Letztes Paket offen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__line_ids
+msgid "Line"
+msgstr "Zeile"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_product__product_uom_max_qty
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_line__product_uom_max_qty
+msgid "Max Qty"
+msgstr "Max. Menge"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields.selection,name:nfu_sale_order_batch_packaging.selection__sale_order_batch_product__open_packaging_state__open
+msgid "Open"
+msgstr "Offen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_product__open_packaging_max_qty
+msgid "Open Packaging Max Qty"
+msgstr "Max. Menge der offenen Verpackung"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__open_packaging_qty
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__open_packaging_qty
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_product__open_packaging_qty
+msgid "Open Packaging Qty"
+msgstr "Menge der offenen Verpackung"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_product__open_packaging_state
+msgid "Open Packaging State"
+msgstr "Status der offenen Verpackung"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_line__product_uom_ordered_qty
+msgid "Ordered Qty"
+msgstr "Bestellte Menge"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__batch_fill_precision
+msgid "Precision"
+msgstr "Genauigkeit"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_product_template
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__product_id
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__product_id
+msgid "Product"
+msgstr "Produkt"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_uom_uom
+msgid "Product Unit of Measure"
+msgstr "Maßeinheit des Produkts"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_product_product
+msgid "Product Variant"
+msgstr "Produktvariante"
+
+#. module: nfu_sale_order_batch_packaging
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_order_batch_form
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_order_batch_product_form
+msgid "Restore Ordered Qty"
+msgstr "Bestellte Menge wiederherstellen"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,help:nfu_sale_order_batch_packaging.field_uom_uom__batch_fill_precision
+msgid ""
+"Rounding step used by the batch fill wizard for this UOM (e.g. 1.0 for whole"
+" units, 0.1 for one decimal)."
+msgstr ""
+"Rundungsschritt des Füll-Assistenten für diese Maßeinheit (z.B. 1.0"
+" für ganze Einheiten, 0.1 für eine Dezimalstelle)."
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_sale_order_batch_product
+msgid "Sale Order Batch Product"
+msgstr ""
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_sale_order_batch
+msgid "Sales Order Batch"
+msgstr "Sammelverkaufsauftrag"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model,name:nfu_sale_order_batch_packaging.model_sale_order_line
+msgid "Sales Order Line"
+msgstr "Verkaufsauftragszeile"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:uom.uom,name:nfu_sale_order_batch_packaging.product_uom_stueck
+msgid "Stück"
+msgstr "Stück"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_line__wizard_id
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill_zero_line__wizard_id
+msgid "Wizard"
+msgstr "Assistent"
+
+#. module: nfu_sale_order_batch_packaging
+#: model:ir.model.fields,field_description:nfu_sale_order_batch_packaging.field_sale_order_batch_packaging_fill__zero_line_ids
+msgid "Zero Line"
+msgstr "Nullzeile"
+
+#. module: nfu_sale_order_batch_packaging
+#: model_terms:ir.ui.view,arch_db:nfu_sale_order_batch_packaging.view_sale_order_batch_packaging_fill_form
+msgid "Zero Out"
+msgstr "Auf Null setzen"

nfu_sale_order_batch_packaging/models/__init__.py

@@ -1,4 +1,6 @@
 from . import product_product
 from . import product_template
+from . import sale_order_batch
 from . import sale_order_batch_product
 from . import sale_order_line
+from . import uom_uom

nfu_sale_order_batch_packaging/models/sale_order_batch.py

@@ -0,0 +1,82 @@
+from odoo import api, fields, models
+from odoo.addons.sale_order_batch.models.sale_order_batch import READONLY_FIELD_STATES
+from odoo.tools import float_is_zero
+
+
+class SaleOrderBatch(models.Model):
+    _inherit = "sale.order.batch"
+
+    has_qty_adjusted = fields.Boolean(
+        compute="_compute_has_qty_adjusted",
+    )
+    has_fillable_packages = fields.Boolean(
+        compute="_compute_has_fillable_packages",
+    )
+    open_product_ids = fields.Many2many(
+        comodel_name="sale.order.batch.product",
+        compute="_compute_open_product_ids",
+        inverse="_inverse_open_product_ids",
+        states=READONLY_FIELD_STATES,
+    )
+
+    @api.depends(
+        "sale_order_line_ids.product_uom_qty",
+        "sale_order_line_ids.product_uom_ordered_qty",
+    )
+    def _compute_has_qty_adjusted(self):
+        for batch in self:
+            batch.has_qty_adjusted = any(
+                line.product_uom_qty != line.product_uom_ordered_qty
+                for line in batch.sale_order_line_ids
+            )
+
+    @api.depends("product_ids.open_packaging_qty")
+    def _compute_has_fillable_packages(self):
+        for batch in self:
+            batch.has_fillable_packages = any(
+                p.open_packaging_qty > 0 for p in batch.product_ids
+            )
+
+    @api.depends("product_ids.open_packaging_qty")
+    def _compute_open_product_ids(self):
+        for batch in self:
+            batch.open_product_ids = batch.product_ids.filtered(
+                lambda p: p.open_packaging_qty > 0
+            )
+
+    def _inverse_open_product_ids(self):
+        pass
+
+    def action_restore_ordered_qty(self):
+        self.ensure_one()
+        lines = self.sale_order_line_ids.filtered(
+            lambda l: l.product_uom_qty != l.product_uom_ordered_qty
+        )
+        for line in lines:
+            line.write({"product_uom_qty": line.product_uom_ordered_qty})
+
+    def action_fill_packages(self):
+        self.ensure_one()
+        eligible = self.product_ids.filtered(
+            lambda p: p.open_packaging_qty > 0 and float_is_zero(p.open_packaging_max_qty, precision_rounding=p.product_id.uom_id.batch_fill_precision)
+        )
+        ineligible = self.product_ids.filtered(
+            lambda p: p.open_packaging_qty > 0 and not float_is_zero(p.open_packaging_max_qty, precision_rounding=p.product_id.uom_id.batch_fill_precision)
+        )
+        wizard = self.env["sale.order.batch.packaging.fill"].create(
+            {
+                "batch_id": self.id,
+                "line_ids": [(0, 0, {"batch_product_id": p.id}) for p in eligible],
+                "zero_line_ids": [
+                    (0, 0, {"batch_product_id": p.id}) for p in ineligible
+                ],
+            }
+        )
+        return {
+            "type": "ir.actions.act_window",
+            "name": "Fill Open Packages",
+            "res_model": "sale.order.batch.packaging.fill",
+            "res_id": wizard.id,
+            "view_mode": "form",
+            "target": "new",
+        }

nfu_sale_order_batch_packaging/models/sale_order_batch_product.py

@@ -1,4 +1,5 @@
 from odoo import api, fields, models
+from odoo.tools import float_is_zero, float_round
 
 
 PACKAGING_STATES = [
@@ -80,6 +81,102 @@ class SaleOrderBatchProduct(models.Model):
             else:
                 product.open_packaging_state = "last_open"
 
+    has_qty_adjusted = fields.Boolean(
+        compute="_compute_has_qty_adjusted",
+    )
+
+    @api.depends(
+        "sale_order_line_ids.product_uom_qty",
+        "sale_order_line_ids.product_uom_ordered_qty",
+    )
+    def _compute_has_qty_adjusted(self):
+        for product in self:
+            product.has_qty_adjusted = any(
+                line.product_uom_qty != line.product_uom_ordered_qty
+                for line in product.sale_order_line_ids
+            )
+
+    def action_fill_packages(self):
+        self.ensure_one()
+        if self.open_packaging_qty > 0 and self.open_packaging_max_qty == 0.0:
+            line_ids = [(0, 0, {"batch_product_id": self.id})]
+            zero_line_ids = []
+        elif self.open_packaging_qty > 0 and self.open_packaging_max_qty != 0.0:
+            line_ids = []
+            zero_line_ids = [(0, 0, {"batch_product_id": self.id})]
+        else:
+            return
+        wizard = self.env["sale.order.batch.packaging.fill"].create(
+            {
+                "batch_id": self.batch_id.id,
+                "line_ids": line_ids,
+                "zero_line_ids": zero_line_ids,
+            }
+        )
+        return {
+            "type": "ir.actions.act_window",
+            "name": "Fill Open Packages",
+            "res_model": "sale.order.batch.packaging.fill",
+            "res_id": wizard.id,
+            "view_mode": "form",
+            "target": "new",
+        }
+
+    def action_restore_ordered_qty(self):
+        self.ensure_one()
+        lines = self.sale_order_line_ids.filtered(
+            lambda l: l.product_uom_ordered_qty != 0
+            and l.product_uom_qty != l.product_uom_ordered_qty
+        )
+        for line in lines:
+            line.write({"product_uom_qty": line.product_uom_ordered_qty})
+
+    def _fill_packaging(self, rounding):
+        self.ensure_one()
+        for line in self.sale_order_line_ids.filtered(
+            lambda l: l.product_uom_ordered_qty == 0
+        ):
+            line.write({"product_uom_ordered_qty": line.product_uom_qty})
+        target = self.open_packaging_qty
+        eligible = sorted(
+            [
+                (line, line.product_uom_max_qty - line.product_uom_qty)
+                for line in self.sale_order_line_ids
+                if line.product_uom_max_qty > line.product_uom_qty
+            ],
+            key=lambda x: x[1],
+        )
+        n = len(eligible)
+        distributed = 0.0
+        last_line = None
+        for line, room in eligible:
+            remaining = target - distributed
+            fair_share = float_round(remaining / n, precision_rounding=rounding)
+            addition = min(room, fair_share)
+            if addition > 0:
+                new_qty = float_round(
+                    line.product_uom_qty + addition, precision_rounding=rounding
+                )
+                new_qty = min(new_qty, line.product_uom_max_qty)
+                line.write({"product_uom_qty": new_qty})
+                distributed += addition
+            last_line = line
+            n -= 1
+            if float_is_zero(target - distributed, precision_rounding=rounding):
+                break
+        # Attach any sub-rounding remainder directly to the last eligible line
+        remainder = target - distributed
+        if remainder > 1e-9 and last_line:
+            new_qty = min(
+                last_line.product_uom_qty + remainder, last_line.product_uom_max_qty
+            )
+            last_line.write({"product_uom_qty": new_qty})
+
+    def _zero_packaging(self):
+        self.ensure_one()
+        for line in self.sale_order_line_ids:
+            line.write({"product_uom_qty": 0.0})
+
     @api.model_create_multi
     def create(self, vals_list):
         for vals in vals_list:

nfu_sale_order_batch_packaging/models/sale_order_line.py

@@ -1,12 +1,13 @@
 from odoo import _, api, fields, models
 from odoo.exceptions import UserError
+from odoo.tools import float_round
 
 
 class SaleOrderLine(models.Model):
     _inherit = "sale.order.line"
 
     product_uom_ordered_qty = fields.Float(
-        string="Ordered Qty", digits="Product Unit of Measure", default=1.0
+        string="Ordered Qty", digits="Product Unit of Measure", default=0.0
     )
     product_uom_max_qty = fields.Float(
         string="Max Qty", digits="Product Unit of Measure"
@@ -21,7 +22,13 @@ class SaleOrderLine(models.Model):
     @api.constrains("product_uom_qty", "product_uom_max_qty")
     def _check_product_uom_qty(self):
         for order_line in self:
-            if order_line.product_uom_qty > order_line.product_uom_max_qty:
+            if (
+                float_round(
+                    order_line.product_uom_max_qty - order_line.product_uom_qty,
+                    precision_rounding=order_line.product_uom.rounding,
+                )
+                < 0
+            ):
                 raise UserError(
                     _(
                         f"{order_line.order_id.name}, {order_line.product_id.name}: "
@@ -32,16 +39,18 @@ class SaleOrderLine(models.Model):
     @api.model_create_multi
     def create(self, vals_list):
         for vals in vals_list:
+            product_qty = vals.get("product_uom_qty", 0.0)
             if (
                 not vals.get("product_uom_max_qty")
                 or vals.get("product_uom_max_qty") == 0
             ):
-                product_qty = vals.get("product_uom_qty")
                 vals["product_uom_max_qty"] = product_qty
+            if not vals.get("product_uom_ordered_qty"):
+                vals["product_uom_ordered_qty"] = product_qty
             if vals.get("product_id") and not vals.get("product_packaging_id"):
                 product_id = vals.get("product_id")
                 # Make sure we're not sudo
-                # e.x. when comming from webshop
+                # e.x. when coming from webshop
                 packaging = self.env["product.packaging"].search(
                     [
                         ("product_id", "=", product_id),

nfu_sale_order_batch_packaging/models/uom_uom.py

@@ -0,0 +1,17 @@
+from odoo import api, fields, models
+
+
+class UomUom(models.Model):
+    _inherit = "uom.uom"
+
+    batch_fill_precision = fields.Float(
+        compute="_compute_batch_fill_precision",
+        store=True,
+        readonly=False,
+        help="Rounding step used by the batch fill wizard for this UOM (e.g. 1.0 for whole units, 0.1 for one decimal).",
+    )
+
+    @api.depends("rounding")
+    def _compute_batch_fill_precision(self):
+        for uom in self:
+            uom.batch_fill_precision = uom.rounding

nfu_sale_order_batch_packaging/readme/DESCRIPTION.rst

@@ -1,2 +1,4 @@
 This module adds a minium and a maximum order quantity field to Sale Orders
-and adds a packaging default to sale order batch.
+and adds a packaging default to sale order batch.
+
+It adds an autosplitting methode that respects the maximum ordered qty for every order and spreads the open packeges evenly over all orders.

nfu_sale_order_batch_packaging/readme/HISTORY.rst

@@ -1,17 +1,18 @@
-- 0.0.1: Initial module.
-- 1.0.0: rename to nfu_sale_order_batch_packaging
-- 1.1.0: Live
-- 1.2.0: Add regeneration action for batch products
-- 1.2.1: refactoring
-- 1.3.0: add packaging states
-- 1.3.1: add open_max_qty
-- 1.3.2: fix color indicator
-- 1.3.3: Enable packagings on installation
-- 1.3.4: 
+- 16.0.0.0.1: Initial module.
+- 16.0.1.0.0: rename to nfu_sale_order_batch_packaging
+- 16.0.1.1.0: Live
+- 16.0.1.2.0: Add regeneration action for batch products
+- 16.0.1.2.1: refactoring
+- 16.0.1.3.0: add packaging states
+- 16.0.1.3.1: add open_max_qty
+- 16.0.1.3.2: fix color indicator
+- 16.0.1.3.3: Enable packagings on installation
+- 16.0.1.3.4: 
     - on creation set max_qty to product_uom_qty if not set
     - remove zero exception for max_qty
     - store open_packaging_qty on batch product module to make it sortable
     - always adjust max_qty to be at least uom_qty except you only set max qty
-- 1.3.4: store all quantities and round open values
-- 1.3.6: make sure packages are readable by the user
-- 1.3.7: really make sure packages are readable by the user
+- 16.0.1.3.4: store all quantities and round open values
+- 16.0.1.3.6: make sure packages are readable by the user
+- 16.0.1.3.7: really make sure packages are readable by the user
+- 16.0.1.4.0: Add automatic batch fillup

nfu_sale_order_batch_packaging/security/ir.model.access.csv

@@ -0,0 +1,4 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_batch_packaging_fill,sale.order.batch.packaging.fill,model_sale_order_batch_packaging_fill,base.group_user,1,1,1,1
+access_batch_packaging_fill_line,sale.order.batch.packaging.fill.line,model_sale_order_batch_packaging_fill_line,base.group_user,1,1,1,1
+access_batch_packaging_fill_zero_line,sale.order.batch.packaging.fill.zero.line,model_sale_order_batch_packaging_fill_zero_line,base.group_user,1,1,1,1

nfu_sale_order_batch_packaging/static/description/index.html

@@ -372,6 +372,7 @@ ul.auto-toc {
 <p><a class="reference external image-reference" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external image-reference" href="http://www.gnu.org/licenses/lgpl-3.0-standalone.html"><img alt="License: LGPL-3" src="https://img.shields.io/badge/licence-LGPL--3-blue.png" /></a> <a class="reference external image-reference" href="https://github.com/bakeupboys/nfu/tree/16.0/nfu_sale_order_batch_packaging"><img alt="bakeupboys/nfu" src="https://img.shields.io/badge/github-bakeupboys%2Fnfu-lightgray.png?logo=github" /></a></p>
 <p>This module adds a minium and a maximum order quantity field to Sale Orders
 and adds a packaging default to sale order batch.</p>
+<p>It adds an autosplitting methode that respects the maximum ordered qty for every order and spreads the open packeges evenly over all orders.</p>
 <p><strong>Table of contents</strong></p>
 <div class="contents local topic" id="contents">
 <ul class="simple">
@@ -388,17 +389,17 @@ and adds a packaging default to sale order batch.</p>
 <div class="section" id="changelog">
 <h1><a class="toc-backref" href="#toc-entry-1">Changelog</a></h1>
 <ul class="simple">
-<li>0.0.1: Initial module.</li>
-<li>1.0.0: rename to nfu_sale_order_batch_packaging</li>
-<li>1.1.0: Live</li>
-<li>1.2.0: Add regeneration action for batch products</li>
-<li>1.2.1: refactoring</li>
-<li>1.3.0: add packaging states</li>
-<li>1.3.1: add open_max_qty</li>
-<li>1.3.2: fix color indicator</li>
-<li>1.3.3: Enable packagings on installation</li>
+<li>16.0.0.0.1: Initial module.</li>
+<li>16.0.1.0.0: rename to nfu_sale_order_batch_packaging</li>
+<li>16.0.1.16.0.1.0: Live</li>
+<li>16.0.1.2.0: Add regeneration action for batch products</li>
+<li>16.0.1.2.1: refactoring</li>
+<li>16.0.1.3.0: add packaging states</li>
+<li>16.0.1.3.1: add open_max_qty</li>
+<li>16.0.1.3.2: fix color indicator</li>
+<li>16.0.1.3.3: Enable packagings on installation</li>
 <li><dl class="first docutils">
-<dt>1.3.4:</dt>
+<dt>16.0.1.3.4:</dt>
 <dd><ul class="first last">
 <li>on creation set max_qty to product_uom_qty if not set</li>
 <li>remove zero exception for max_qty</li>
@@ -408,9 +409,10 @@ and adds a packaging default to sale order batch.</p>
 </dd>
 </dl>
 </li>
-<li>1.3.4: store all quantities and round open values</li>
-<li>1.3.6: make sure packages are readable by the user</li>
-<li>1.3.7: really make sure packages are readable by the user</li>
+<li>16.0.1.3.4: store all quantities and round open values</li>
+<li>16.0.1.3.6: make sure packages are readable by the user</li>
+<li>16.0.1.3.7: really make sure packages are readable by the user</li>
+<li>16.0.1.4.0: Add automatic batch fillup</li>
 </ul>
 </div>
 <div class="section" id="bug-tracker">

nfu_sale_order_batch_packaging/tests/__init__.py

@@ -0,0 +1 @@
+from . import test_batch_packaging_fill

nfu_sale_order_batch_packaging/tests/test_batch_packaging_fill.py

@@ -0,0 +1,366 @@
+from odoo.tests import tagged
+from odoo.tests.common import TransactionCase
+
+
+@tagged("post_install", "-at_install")
+class TestBatchPackagingFill(TransactionCase):
+    def setUp(self):
+        super().setUp()
+        self.uom_kg = self.env.ref("uom.product_uom_kgm")
+        self.uom_unit = self.env.ref("uom.product_uom_unit")
+        self.partner = self.env["res.partner"].create({"name": "Test Partner"})
+        self.batch = self.env["sale.order.batch"].create(
+            {"name": "Test Batch", "state": "in_progress"}
+        )
+
+    def _make_product(self, uom, packaging_qty):
+        product = self.env["product.product"].create(
+            {
+                "name": f"Product {uom.name} {packaging_qty}",
+                "uom_id": uom.id,
+                "uom_po_id": uom.id,
+                "type": "consu",
+            }
+        )
+        self.env["product.packaging"].create(
+            {
+                "name": "Pack",
+                "product_id": product.id,
+                "qty": packaging_qty,
+                "sales": True,
+            }
+        )
+        return product
+
+    def _add_lines(self, product, lines_data):
+        """Create one sale order in self.batch with one line per (qty, max_qty) pair.
+        Returns the sale.order.batch.product that aggregates all lines."""
+        order = self.env["sale.order"].create(
+            {"partner_id": self.partner.id, "batch_id": self.batch.id}
+        )
+        for qty, max_qty in lines_data:
+            self.env["sale.order.line"].create(
+                {
+                    "order_id": order.id,
+                    "product_id": product.id,
+                    "product_uom_qty": qty,
+                    "product_uom_max_qty": max_qty,
+                    "price_unit": 10.0,
+                }
+            )
+        return self.batch.product_ids.filtered(lambda p: p.product_id == product)
+
+    # ------------------------------------------------------------------
+    # _fill_packaging
+    # ------------------------------------------------------------------
+
+    def test_even_split(self):
+        """All lines with identical room each receive an equal share."""
+        product = self._make_product(self.uom_kg, 10.0)
+        # total = 24, open = 6; each line has exactly 3 kg of room
+        bp = self._add_lines(product, [(7.0, 10.0), (8.0, 11.0), (9.0, 12.0)])
+        self.assertAlmostEqual(bp.open_packaging_qty, 6.0, places=2)
+
+        bp._fill_packaging(0.001)
+
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+        # each line must have gained exactly 2 kg
+        for line in bp.sale_order_line_ids:
+            self.assertAlmostEqual(
+                line.product_uom_qty,
+                line.product_uom_max_qty - 1.0,
+                places=3,
+            )
+
+    def test_constrained_line_capped_at_max(self):
+        """A line that cannot take its fair share is capped; remainder is spread evenly."""
+        product = self._make_product(self.uom_kg, 10.0)
+        # total = 23, open = 7
+        # rooms: 1 (capped), 10, 7 → sorted: 1, 7, 10
+        bp = self._add_lines(product, [(8.0, 9.0), (5.0, 15.0), (10.0, 17.0)])
+        self.assertAlmostEqual(bp.open_packaging_qty, 7.0, places=2)
+
+        bp._fill_packaging(0.001)
+
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+        capped = bp.sale_order_line_ids.filtered(
+            lambda line: line.product_uom_max_qty == 9.0
+        )
+        # capped line must be at its max
+        self.assertAlmostEqual(capped.product_uom_qty, 9.0, places=3)
+        # every line must stay within its max
+        for line in bp.sale_order_line_ids:
+            self.assertLessEqual(line.product_uom_qty, line.product_uom_max_qty + 1e-6)
+
+    def test_whole_units_rounding_produces_integers(self):
+        """precision=1.0 yields only whole-number additions."""
+        product = self._make_product(self.uom_unit, 6.0)
+        # total = 7, open = 5; rooms: 3 and 5
+        bp = self._add_lines(product, [(3.0, 6.0), (4.0, 9.0)])
+        self.assertAlmostEqual(bp.open_packaging_qty, 5.0, places=2)
+        orig = {line.id: line.product_uom_qty for line in bp.sale_order_line_ids}
+
+        bp._fill_packaging(1.0)
+
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+        for line in bp.sale_order_line_ids:
+            added = line.product_uom_qty - orig[line.id]
+            self.assertAlmostEqual(added, round(added), places=6)
+
+    def test_decimal_rounding_uses_tenth_steps(self):
+        """precision=0.1 distributes in 0.1-unit steps."""
+        product = self._make_product(self.uom_kg, 10.0)
+        # total = 7, open = 3; rooms: 7 and 6 → sorted: line2(6), line1(7)
+        bp = self._add_lines(product, [(3.0, 10.0), (4.0, 10.0)])
+        self.assertAlmostEqual(bp.open_packaging_qty, 3.0, places=2)
+        orig = {line.id: line.product_uom_qty for line in bp.sale_order_line_ids}
+
+        bp._fill_packaging(0.1)
+
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+        for line in bp.sale_order_line_ids:
+            added = round(line.product_uom_qty - orig[line.id], 6)
+            # must be a multiple of 0.1 (within floating-point tolerance)
+            self.assertAlmostEqual(round(added / 0.1) * 0.1, added, places=5)
+
+    def test_sub_rounding_remainder_is_attached(self):
+        """A remainder smaller than the rounding step is added directly to the last line."""
+        product = self._make_product(self.uom_kg, 3.0)
+        # total = 2.7, open = 0.3; with precision=1.0 every fair_share rounds to 0
+        bp = self._add_lines(product, [(0.9, 1.5), (0.9, 1.5), (0.9, 1.5)])
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.3, places=2)
+
+        bp._fill_packaging(1.0)
+
+        # The whole 0.3 remainder must have been placed on one line
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+        # Every line must still respect its max qty
+        for line in bp.sale_order_line_ids:
+            self.assertLessEqual(line.product_uom_qty, line.product_uom_max_qty + 1e-6)
+
+    def test_no_line_exceeds_max_qty(self):
+        """After filling no sale order line may exceed its max qty."""
+        product = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(product, [(6.0, 8.0), (7.0, 12.0), (4.0, 9.0)])
+        bp._fill_packaging(0.001)
+        for line in bp.sale_order_line_ids:
+            self.assertLessEqual(line.product_uom_qty, line.product_uom_max_qty + 1e-6)
+
+    # ------------------------------------------------------------------
+    # Wizard
+    # ------------------------------------------------------------------
+
+    def test_wizard_includes_eligible_products_only(self):
+        """Eligible products land in line_ids; ineligible ones land in zero_line_ids."""
+        eligible = self._make_product(self.uom_kg, 10.0)
+        ineligible = self._make_product(self.uom_kg, 10.0)
+        # eligible: total max (30) covers needed (23+7=30)
+        self._add_lines(eligible, [(23.0, 30.0)])
+        # ineligible: total max (24) < 23+7=30 → open_packaging_max_qty != 0
+        self._add_lines(ineligible, [(23.0, 24.0)])
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+
+        self.assertEqual(len(wizard.line_ids), 1)
+        self.assertEqual(wizard.line_ids.product_id, eligible)
+        self.assertEqual(len(wizard.zero_line_ids), 1)
+        self.assertEqual(wizard.zero_line_ids.product_id, ineligible)
+
+    def test_wizard_default_precision_for_unit_uom(self):
+        """UOMs with batch_fill_precision=1.0 default to precision 1.0."""
+        product = self._make_product(self.uom_unit, 6.0)
+        self._add_lines(product, [(3.0, 9.0)])
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+
+        self.assertAlmostEqual(wizard.line_ids.batch_fill_precision, 1.0)
+
+    def test_wizard_default_precision_for_stueck_uom(self):
+        """Stück UOM (batch_fill_precision=1.0) defaults to precision 1.0."""
+        uom_stueck = self.env.ref("nfu_sale_order_batch_packaging.product_uom_stueck")
+        product = self._make_product(uom_stueck, 6.0)
+        self._add_lines(product, [(3.0, 9.0)])
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+
+        self.assertAlmostEqual(wizard.line_ids.batch_fill_precision, 1.0)
+
+    def test_wizard_default_precision_for_kg_uom(self):
+        """UOMs with default batch_fill_precision use 0.1."""
+        product = self._make_product(self.uom_kg, 10.0)
+        self._add_lines(product, [(23.0, 30.0)])
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+
+        self.assertAlmostEqual(wizard.line_ids.batch_fill_precision, 0.1)
+
+    def test_wizard_fill_closes_open_packaging(self):
+        """End-to-end: confirming the wizard brings open_packaging_qty to zero."""
+        product = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(product, [(23.0, 30.0)])
+        self.assertGreater(bp.open_packaging_qty, 0.0)
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+        wizard.action_fill()
+
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+
+    # ------------------------------------------------------------------
+    # Restore
+    # ------------------------------------------------------------------
+
+    def test_restore_batch_resets_all_lines(self):
+        """action_restore_ordered_qty on the batch sets every line back to ordered qty."""
+        product = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(product, [(23.0, 30.0)])
+        bp._fill_packaging(0.1)
+        # fill must have increased some qty
+        self.assertTrue(
+            any(
+                line.product_uom_qty != line.product_uom_ordered_qty
+                for line in bp.sale_order_line_ids
+            )
+        )
+        self.batch.action_restore_ordered_qty()
+        for line in bp.sale_order_line_ids:
+            self.assertAlmostEqual(
+                line.product_uom_qty, line.product_uom_ordered_qty, places=3
+            )
+
+    def test_restore_batch_product_resets_its_lines_only(self):
+        """action_restore_ordered_qty on a batch product only touches its own lines."""
+        product_a = self._make_product(self.uom_kg, 10.0)
+        product_b = self._make_product(self.uom_kg, 10.0)
+        bp_a = self._add_lines(product_a, [(23.0, 30.0)])
+        bp_b = self._add_lines(product_b, [(23.0, 30.0)])
+        bp_a._fill_packaging(0.1)
+        bp_b._fill_packaging(0.1)
+
+        bp_a.action_restore_ordered_qty()
+
+        for line in bp_a.sale_order_line_ids:
+            self.assertAlmostEqual(
+                line.product_uom_qty, line.product_uom_ordered_qty, places=3
+            )
+        # product_b lines must be unchanged
+        self.assertTrue(
+            any(
+                line.product_uom_qty != line.product_uom_ordered_qty
+                for line in bp_b.sale_order_line_ids
+            )
+        )
+
+    def test_has_qty_adjusted_false_before_fill(self):
+        """has_qty_adjusted is False when no line has been modified."""
+        product = self._make_product(self.uom_kg, 10.0)
+        self._add_lines(product, [(10.0, 15.0)])
+        self.assertFalse(self.batch.has_qty_adjusted)
+
+    def test_has_qty_adjusted_true_after_fill(self):
+        """has_qty_adjusted becomes True once a line quantity is increased."""
+        product = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(product, [(23.0, 30.0)])
+        bp._fill_packaging(0.1)
+        self.assertTrue(self.batch.has_qty_adjusted)
+
+    def test_has_qty_adjusted_false_after_restore(self):
+        """has_qty_adjusted returns to False after restoring ordered quantities."""
+        product = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(product, [(23.0, 30.0)])
+        bp._fill_packaging(0.1)
+        self.batch.action_restore_ordered_qty()
+        self.assertFalse(self.batch.has_qty_adjusted)
+
+    def test_has_fillable_packages_false_when_no_open_qty(self):
+        """has_fillable_packages is False when all products have complete packages."""
+        product = self._make_product(self.uom_kg, 10.0)
+        self._add_lines(product, [(10.0, 15.0)])  # qty is exact multiple of packaging
+        self.assertFalse(self.batch.has_fillable_packages)
+
+    def test_has_fillable_packages_true_for_eligible(self):
+        """has_fillable_packages is True when an eligible product has open packaging qty."""
+        product = self._make_product(self.uom_kg, 10.0)
+        self._add_lines(product, [(23.0, 30.0)])  # open_packaging_max_qty == 0
+        self.assertTrue(self.batch.has_fillable_packages)
+
+    def test_has_fillable_packages_true_for_ineligible(self):
+        """has_fillable_packages is True even for ineligible (zero-out) products."""
+        product = self._make_product(self.uom_kg, 10.0)
+        self._add_lines(
+            product, [(23.0, 24.0)]
+        )  # max too tight → open_packaging_max_qty != 0
+        self.assertGreater(
+            self.batch.product_ids.filtered(
+                lambda p: p.product_id == product
+            ).open_packaging_max_qty,
+            0.0,
+        )
+        self.assertTrue(self.batch.has_fillable_packages)
+
+    # ------------------------------------------------------------------
+    # Zero-out
+    # ------------------------------------------------------------------
+
+    def test_zero_packaging_sets_lines_to_zero(self):
+        """_zero_packaging sets all sale order line quantities to 0."""
+        product = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(product, [(23.0, 24.0)])  # ineligible (max too tight)
+        self.assertGreater(bp.open_packaging_qty, 0.0)
+
+        bp._zero_packaging()
+
+        for line in bp.sale_order_line_ids:
+            self.assertAlmostEqual(line.product_uom_qty, 0.0, places=3)
+
+    def test_wizard_zeros_ineligible_by_default(self):
+        """Confirming the wizard zeros ineligible lines (keep_qty=False default)."""
+        ineligible = self._make_product(self.uom_kg, 10.0)
+        self._add_lines(ineligible, [(23.0, 24.0)])
+        bp = self.batch.product_ids.filtered(lambda p: p.product_id == ineligible)
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+        self.assertFalse(wizard.zero_line_ids.keep_qty)
+
+        wizard.action_fill()
+
+        for line in bp.sale_order_line_ids:
+            self.assertAlmostEqual(line.product_uom_qty, 0.0, places=3)
+
+    def test_wizard_keeps_ineligible_when_keep_qty_true(self):
+        """Lines with keep_qty=True are not zeroed out."""
+        ineligible = self._make_product(self.uom_kg, 10.0)
+        bp = self._add_lines(ineligible, [(23.0, 24.0)])
+        orig_qtys = {line.id: line.product_uom_qty for line in bp.sale_order_line_ids}
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+        wizard.zero_line_ids.write({"keep_qty": True})
+        wizard.action_fill()
+
+        for line in bp.sale_order_line_ids:
+            self.assertAlmostEqual(line.product_uom_qty, orig_qtys[line.id], places=3)
+
+    def test_wizard_respects_precision_override(self):
+        """Overriding batch_fill_precision on a wizard line changes the applied rounding."""
+        product = self._make_product(self.uom_kg, 10.0)
+        # total = 7, open = 3; use 2 lines (rooms: 7 and 6)
+        bp = self._add_lines(product, [(3.0, 10.0), (4.0, 10.0)])
+
+        action = self.batch.action_fill_packages()
+        wizard = self.env["sale.order.batch.packaging.fill"].browse(action["res_id"])
+        # Force whole-units even though UOM is kg
+        wizard.line_ids.write({"batch_fill_precision": 1.0})
+        wizard.action_fill()
+
+        self.assertAlmostEqual(bp.open_packaging_qty, 0.0, places=2)
+        for line in bp.sale_order_line_ids:
+            # additions must be whole numbers when precision=1.0
+            self.assertAlmostEqual(
+                line.product_uom_qty, round(line.product_uom_qty), places=6
+            )

nfu_sale_order_batch_packaging/views/sale_order_batch_product_views.xml

@@ -15,6 +15,23 @@
                         <field name="open_packaging_max_qty" decoration-danger="(open_packaging_max_qty != 0.0)"/>
                         <field name="open_packaging_state"/>
                     </xpath>
+                    <xpath expr="//header" position="inside">
+                        <field name="has_qty_adjusted" invisible="1"/>
+                        <field name="open_packaging_qty" invisible="1"/>
+                        <button
+                    name="action_fill_packages"
+                    type="object"
+                    string="Fill Packages"
+                    class="btn-primary"
+                    attrs="{'invisible': [('open_packaging_qty', '=', 0.0)]}"
+                />
+                        <button
+                    name="action_restore_ordered_qty"
+                    type="object"
+                    string="Restore Ordered Qty"
+                    attrs="{'invisible': [('has_qty_adjusted', '=', False)]}"
+                />
+                    </xpath>
                     <xpath
                 expr="//field[@name='sale_order_line_ids']/tree/field[@name='product_uom_qty']"
                 position="before"

nfu_sale_order_batch_packaging/views/sale_order_batch_views.xml

@@ -5,6 +5,37 @@
                 <field name="model">sale.order.batch</field>
                 <field name="inherit_id" ref="sale_order_batch.view_order_batch_form"/>
                 <field name="arch" type="xml">
+                        <!-- Header buttons -->
+                        <xpath expr="//button[@id='action_confirm_primary']" position="before">
+                                <field name="has_qty_adjusted" invisible="1"/>
+                                <field name="has_fillable_packages" invisible="1"/>
+                                <button
+                    name="action_fill_packages"
+                    type="object"
+                    class="btn-primary"
+                    string="Fill Packages"
+                    attrs="{'invisible': ['|', ('state', 'not in', ['in_progress']), ('has_fillable_packages', '=', False)]}"
+                />
+                        </xpath>
+                        <xpath expr="//button[@id='action_confirm_primary']" position="attributes">
+                                <attribute
+                    name="attrs"
+                >{'invisible': ['|', ('state', 'not in', ['in_progress']), ('has_fillable_packages', '=', True)]}</attribute>
+                        </xpath>
+                        <xpath expr="//button[@id='action_confirm_secondary']" position="attributes">
+                                <attribute
+                    name="attrs"
+                >{"invisible": ["|", ["state", "not in", ["draft", "in_progress"]], ["has_fillable_packages", "=", False]]}</attribute>
+                        </xpath>
+                        <xpath expr="//button[@id='create_invoices']" position="before">
+                                <button
+                    name="action_restore_ordered_qty"
+                    type="object"
+                    string="Restore Ordered Qty"
+                    attrs="{'invisible': ['|', ('state', '!=', 'in_progress'),('has_qty_adjusted', '=', False)]}"
+                />
+                        </xpath>
+                        <!-- Fields -->
                         <xpath
                 expr="//field[@name='sale_order_line_ids']/tree/field[@name='product_uom_qty']"
                 position="before"
@@ -26,6 +57,30 @@
                         <xpath expr="//field[@name='product_ids']/tree/field[@name='product_id']" position="attributes">
                                 <attribute name="decoration-warning">(open_packaging_qty != 0)</attribute>
                         </xpath>
+                        <!-- Open Products tab -->
+                        <xpath expr="//page[@name='products']" position="after">
+                                <page string="Open Products" name="open_products">
+                                        <field name="open_product_ids">
+                                                <tree create="0" delete="0">
+                                                        <field name="product_template_id" optional="hide"/>
+                                                        <field name="product_id"/>
+                                                        <field name="product_uom_qty"/>
+                                                        <field name="product_uom_max_qty"/>
+                                                        <field
+                                name="open_packaging_qty"
+                                decoration-danger="open_packaging_qty != 0"
+                            />
+                                                        <field name="open_packaging_max_qty" optional="hide"/>
+                                                        <field
+                                name="open_packaging_state"
+                                widget="badge"
+                                decoration-warning="open_packaging_state == 'open'"
+                                decoration-danger="open_packaging_state == 'last_open'"
+                            />
+                                                </tree>
+                                        </field>
+                                </page>
+                        </xpath>
                 </field>
         </record>
  </odoo>

nfu_sale_order_batch_packaging/views/uom_uom_views.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="product_uom_form_view_batch_fill" model="ir.ui.view">
+        <field name="name">uom.uom.form.batch.fill</field>
+        <field name="model">uom.uom</field>
+        <field name="inherit_id" ref="uom.product_uom_form_view"/>
+        <field name="arch" type="xml">
+            <field name="rounding" position="after">
+                <field name="batch_fill_precision"/>
+            </field>
+        </field>
+    </record>
+</odoo>

nfu_sale_order_batch_packaging/wizard/__init__.py

@@ -0,0 +1 @@
+from . import sale_order_batch_packaging_fill

nfu_sale_order_batch_packaging/wizard/sale_order_batch_packaging_fill.py

@@ -0,0 +1,78 @@
+from odoo import api, fields, models
+
+
+class SaleOrderBatchPackagingFill(models.TransientModel):
+    _name = "sale.order.batch.packaging.fill"
+    _description = "Batch Packaging Auto-Fill Wizard"
+
+    batch_id = fields.Many2one("sale.order.batch", readonly=True)
+    line_ids = fields.One2many("sale.order.batch.packaging.fill.line", "wizard_id")
+    zero_line_ids = fields.One2many(
+        "sale.order.batch.packaging.fill.zero.line", "wizard_id"
+    )
+    has_fill_lines = fields.Boolean(compute="_compute_has_fill_lines")
+    has_zero_lines = fields.Boolean(compute="_compute_has_zero_lines")
+
+    @api.depends("line_ids")
+    def _compute_has_fill_lines(self):
+        for wizard in self:
+            wizard.has_fill_lines = bool(wizard.line_ids)
+
+    @api.depends("zero_line_ids")
+    def _compute_has_zero_lines(self):
+        for wizard in self:
+            wizard.has_zero_lines = bool(wizard.zero_line_ids)
+
+    def action_fill(self):
+        for line in self.line_ids:
+            line.batch_product_id._fill_packaging(line.batch_fill_precision)
+        for zero_line in self.zero_line_ids.filtered(lambda l: not l.keep_qty):
+            zero_line.batch_product_id._zero_packaging()
+        return {"type": "ir.actions.act_window_close"}
+
+
+class SaleOrderBatchPackagingFillLine(models.TransientModel):
+    _name = "sale.order.batch.packaging.fill.line"
+    _description = "Batch Packaging Auto-Fill Wizard Line"
+
+    wizard_id = fields.Many2one("sale.order.batch.packaging.fill", ondelete="cascade")
+    batch_product_id = fields.Many2one("sale.order.batch.product", required=True)
+    product_id = fields.Many2one(
+        related="batch_product_id.product_id", string="Product"
+    )
+    open_packaging_qty = fields.Float(
+        related="batch_product_id.open_packaging_qty",
+        string="Open Packaging Qty",
+        digits=[12, 3],
+    )
+    batch_fill_precision = fields.Float(
+        string="Precision",
+        compute="_compute_batch_fill_precision",
+        precompute=True,
+        store=True,
+        readonly=False,
+    )
+
+    @api.depends("batch_product_id.product_id.uom_id.batch_fill_precision")
+    def _compute_batch_fill_precision(self):
+        for line in self:
+            line.batch_fill_precision = (
+                line.batch_product_id.product_id.uom_id.batch_fill_precision
+            )
+
+
+class SaleOrderBatchPackagingFillZeroLine(models.TransientModel):
+    _name = "sale.order.batch.packaging.fill.zero.line"
+    _description = "Batch Packaging Auto-Fill Zero-Out Line"
+
+    wizard_id = fields.Many2one("sale.order.batch.packaging.fill", ondelete="cascade")
+    batch_product_id = fields.Many2one("sale.order.batch.product", required=True)
+    product_id = fields.Many2one(
+        related="batch_product_id.product_id", string="Product"
+    )
+    open_packaging_qty = fields.Float(
+        related="batch_product_id.open_packaging_qty",
+        string="Open Packaging Qty",
+        digits=[12, 3],
+    )
+    keep_qty = fields.Boolean(string="Keep", default=False)

nfu_sale_order_batch_packaging/wizard/sale_order_batch_packaging_fill_views.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="view_sale_order_batch_packaging_fill_form" model="ir.ui.view">
+        <field name="name">sale.order.batch.packaging.fill.form</field>
+        <field name="model">sale.order.batch.packaging.fill</field>
+        <field name="arch" type="xml">
+            <form>
+                <sheet>
+                    <notebook>
+                        <page
+                            string="Fill Packages"
+                            name="fill_packages"
+                            attrs="{'invisible': [('has_fill_lines', '=', False)]}"
+                        >
+                            <field name="has_fill_lines" invisible="1"/>
+                            <field name="line_ids">
+                                <tree editable="bottom" delete="0">
+                                    <field name="product_id" readonly="1"/>
+                                    <field name="open_packaging_qty" readonly="1"/>
+                                    <field name="batch_fill_precision"/>
+                                </tree>
+                            </field>
+                        </page>
+                        <page string="Zero Out" name="zero_out" attrs="{'invisible': [('has_zero_lines', '=', False)]}">
+                            <field name="has_zero_lines" invisible="1"/>
+                            <field name="zero_line_ids">
+                                <tree editable="bottom" delete="0">
+                                    <field name="product_id" readonly="1"/>
+                                    <field name="open_packaging_qty" readonly="1"/>
+                                    <field name="keep_qty"/>
+                                </tree>
+                            </field>
+                        </page>
+                    </notebook>
+                </sheet>
+                <footer>
+                    <button name="action_fill" type="object" string="Confirm" class="btn-primary"/>
+                    <button string="Cancel" class="btn-secondary" special="cancel"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+</odoo>

nfu_wholesaler_exporter/views/sale_order_batch_views.xml

@@ -6,12 +6,20 @@
         <field name="inherit_id" ref="sale_order_batch.view_order_batch_form"/>
         <field name="arch" type="xml">
             <xpath expr="//header" position="inside">
+                <field name="has_fillable_packages" invisible="1"/>
                 <button
                     name="export_wholesaler_csv"
                     type="object"
                     string="Export Wholesaler CSV"
                     class="oe_highlight"
-                    attrs="{'invisible': [('state', 'not in', ['in_progress','closed'])]}"
+                    attrs="{'invisible': ['|', ('state', 'not in', ['in_progress', 'closed']), ('has_fillable_packages', '=', True)]}"
+                />
+                <button
+                    name="export_wholesaler_csv"
+                    type="object"
+                    string="Export Wholesaler CSV"
+                    class="btn-secondary"
+                    attrs="{'invisible': ['|', ('state', 'not in', ['in_progress', 'closed']), ('has_fillable_packages', '=', False)]}"
                 />
             </xpath>
         </field>