changeset 92098bd1ad6a in modules/sale_secondary_unit:default
details: 
https://hg.tryton.org/modules/sale_secondary_unit?cmd=changeset;node=92098bd1ad6a
description:
        Add secondary unit

        issue8239
        review271131003
diffstat:

 .drone.yml                             |   45 ++
 COPYRIGHT                              |   15 +
 LICENSE                                |  674 +++++++++++++++++++++++++++++++++
 MANIFEST.in                            |    5 +
 README.rst                             |    1 +
 __init__.py                            |   29 +
 account.py                             |   35 +
 doc/index.rst                          |   12 +
 message.xml                            |   10 +
 product.py                             |  148 +++++++
 product.xml                            |   20 +
 sale.py                                |  207 ++++++++++
 sale.xml                               |   24 +
 setup.py                               |  132 ++++++
 stock.py                               |   35 +
 stock.xml                              |   12 +
 tests/__init__.py                      |    9 +
 tests/scenario_sale_secondary_unit.rst |  132 ++++++
 tests/test_sale_secondary_unit.py      |   31 +
 tox.ini                                |   15 +
 tryton.cfg                             |   18 +
 view/product_customer_form.xml         |   15 +
 view/product_template_form.xml         |   16 +
 view/sale_line_form.xml                |   15 +
 view/sale_line_tree.xml                |   10 +
 view/stock_move_list.xml               |    9 +
 26 files changed, 1674 insertions(+), 0 deletions(-)

diffs (1779 lines):

diff -r 000000000000 -r 92098bd1ad6a .drone.yml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/.drone.yml        Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,45 @@
+clone:
+    hg:
+        image: plugins/hg
+
+pipeline:
+    tox:
+        image: ${IMAGE}
+        environment:
+            - CFLAGS=-O0
+            - DB_CACHE=/cache
+            - TOX_TESTENV_PASSENV=CFLAGS DB_CACHE
+            - POSTGRESQL_URI=postgresql://postgres@postgresql:5432/
+        commands:
+            - pip install tox
+            - tox -e "${TOXENV}-${DATABASE}"
+        volumes:
+            - cache:/root/.cache
+
+services:
+    postgresql:
+        image: postgres
+        when:
+            matrix:
+                DATABASE: postgresql
+
+matrix:
+    include:
+        - IMAGE: python:3.5
+          TOXENV: py35
+          DATABASE: sqlite
+        - IMAGE: python:3.5
+          TOXENV: py35
+          DATABASE: postgresql
+        - IMAGE: python:3.6
+          TOXENV: py36
+          DATABASE: sqlite
+        - IMAGE: python:3.6
+          TOXENV: py36
+          DATABASE: postgresql
+        - IMAGE: python:3.7
+          TOXENV: py37
+          DATABASE: sqlite
+        - IMAGE: python:3.7
+          TOXENV: py37
+          DATABASE: postgresql
diff -r 000000000000 -r 92098bd1ad6a COPYRIGHT
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/COPYRIGHT Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,15 @@
+Copyright (C) 2019 Cédric Krier
+Copyright (C) 2019 B2CK
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff -r 000000000000 -r 92098bd1ad6a LICENSE
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/LICENSE   Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
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+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff -r 000000000000 -r 92098bd1ad6a MANIFEST.in
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/MANIFEST.in       Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,5 @@
+include CHANGELOG
+include COPYRIGHT
+include LICENSE
+include README.rst
+include doc/*
diff -r 000000000000 -r 92098bd1ad6a README.rst
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/README.rst        Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,1 @@
+doc/index.rst
\ No newline at end of file
diff -r 000000000000 -r 92098bd1ad6a __init__.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/__init__.py       Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,29 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.pool import Pool
+from . import account
+from . import product
+from . import sale
+from . import stock
+
+__all__ = ['register']
+
+
+def register():
+    Pool.register(
+        account.InvoiceLine,
+        product.Template,
+        product.Product,
+        sale.Line,
+        stock.Move,
+        module='sale_secondary_unit', type_='model')
+    Pool.register(
+        product.ProductCustomer,
+        sale.Line_ProductCustomer,
+        module='sale_secondary_unit', type_='model',
+        depends=['sale_product_customer'])
+    Pool.register(
+        sale.OpportunityLine,
+        module='sale_secondary_unit', type_='model',
+        depends=['sale_opportunity'])
diff -r 000000000000 -r 92098bd1ad6a account.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/account.py        Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,35 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.pool import PoolMeta, Pool
+
+
+class InvoiceLine(metaclass=PoolMeta):
+    __name__ = 'account.invoice.line'
+
+    def get_product_secondary_uom_category(self, name):
+        pool = Pool()
+        SaleLine = pool.get('sale.line')
+        category = super().get_product_secondary_uom_category(name)
+        if isinstance(self.origin, SaleLine):
+            if self.origin.secondary_unit:
+                category = self.origin.secondary_unit.category.id
+        return category
+
+    @property
+    def secondary_uom_factor(self):
+        pool = Pool()
+        SaleLine = pool.get('sale.line')
+        factor = super().secondary_uom_factor
+        if isinstance(self.origin, SaleLine):
+            factor = self.origin.secondary_uom_factor
+        return factor
+
+    @property
+    def secondary_uom_rate(self):
+        pool = Pool()
+        SaleLine = pool.get('sale.line')
+        factor = super().secondary_uom_rate
+        if isinstance(self.origin, SaleLine):
+            factor = self.origin.secondary_uom_rate
+        return factor
diff -r 000000000000 -r 92098bd1ad6a doc/index.rst
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/index.rst     Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,12 @@
+Sale Secondary Unit Module
+##########################
+
+The sale secondary unit module adds a secondary unit of measure on sale lines.
+The secondary quantity and unit price are kept synchronized with the quantity
+and unit price.
+The secondary unit is defined on the product with its factor against the sale
+unit.
+
+If the sale product customer module is activated, a specific secondary unit may
+be defined on the product customer. And it overrides the definition on the
+product.
diff -r 000000000000 -r 92098bd1ad6a message.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/message.xml       Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data group="1">
+        <record model="ir.message" 
id="msg_sale_secondary_uom_incompatible_factor_rate">
+            <field name="text">Incompatible sale secondary factor and rate 
values for "%(record)s".</field>
+        </record>
+    </data>
+</tryton>
diff -r 000000000000 -r 92098bd1ad6a product.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/product.py        Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,148 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.i18n import gettext
+from trytond.model import fields
+from trytond.pool import PoolMeta
+from trytond.pyson import Eval, Bool
+
+from trytond.modules.product import uom_conversion_digits
+from trytond.modules.product.exceptions import UOMValidationError
+
+
+class SaleSecondaryMixin:
+    sale_secondary_uom = fields.Many2One(
+        'product.uom', "Sale Secondary UOM",
+        domain=[
+            ('category', '!=', Eval('default_uom_category')),
+            ],
+        depends=['default_uom_category'])
+    sale_secondary_uom_factor = fields.Float(
+        "Sale Secondary UOM Factor", digits=uom_conversion_digits,
+        states={
+            'required': Bool(Eval('sale_secondary_uom')),
+            'invisible': ~Eval('sale_secondary_uom'),
+            },
+        depends=['sale_secondary_uom'],
+        help="The coefficient for the formula:\n"
+        "coefficient (sale unit) = 1 (secondary unit)")
+    sale_secondary_uom_rate = fields.Float(
+        "Sale Secondary UOM Rate", digits=uom_conversion_digits,
+        states={
+            'required': Bool(Eval('sale_secondary_uom')),
+            'invisible': ~Eval('sale_secondary_uom'),
+            },
+        depends=['sale_secondary_uom'],
+        help="The coefficient for the formula:\n"
+        "1 (sale unit) = coefficient (secondary unit)")
+
+    @fields.depends('sale_secondary_uom_factor')
+    def on_change_sale_secondary_uom_factor(self):
+        if not self.sale_secondary_uom_factor:
+            self.sale_secondary_uom_rate = None
+        else:
+            self.sale_secondary_uom_rate = round(
+                1. / self.sale_secondary_uom_factor, uom_conversion_digits[1])
+
+    @fields.depends('sale_secondary_uom_rate')
+    def on_change_sale_secondary_uom_rate(self):
+        if not self.sale_secondary_uom_rate:
+            self.sale_secondary_uom_factor = None
+        else:
+            self.sale_secondary_uom_factor = round(
+                1. / self.sale_secondary_uom_rate, uom_conversion_digits[1])
+
+    @property
+    def sale_secondary_uom_normal_rate(self):
+        uom = self.sale_secondary_uom
+        rate = self.sale_secondary_uom_rate
+        if self.sale_uom and rate and uom:
+            if self.sale_uom.accurate_field == 'factor':
+                rate *= self.sale_uom.factor
+            else:
+                rate /= self.sale_uom.rate
+            if uom.accurate_field == 'factor':
+                rate /= uom.factor
+            else:
+                rate *= uom.rate
+        return rate
+
+    @property
+    def sale_secondary_uom_normal_factor(self):
+        uom = self.sale_secondary_uom
+        factor = self.sale_secondary_uom_factor
+        if uom and factor and self.sale_uom:
+            if uom.accurate_field == 'factor':
+                factor *= uom.factor
+            else:
+                factor /= uom.rate
+            if self.sale_uom.accurate_field == 'factor':
+                factor /= self.sale_uom.factor
+            else:
+                factor *= self.sale_uom.rate
+        return factor
+
+    @classmethod
+    def validate(cls, records):
+        super().validate(records)
+        for record in records:
+            record.check_sale_secondary_uom_factor_and_rate()
+
+    def check_sale_secondary_uom_factor_and_rate(self):
+        factor = self.sale_secondary_uom_factor
+        rate = self.sale_secondary_uom_rate
+        if factor and rate:
+            if ((rate != round(1. / factor, uom_conversion_digits[1]))
+                    and factor != round(1. / rate, uom_conversion_digits[1])):
+                raise UOMValidationError(
+                    gettext('sale_secondary_unit'
+                        '.msg_sale_secondary_uom_incompatible_factor_rate',
+                        record=self))
+
+
+class Template(SaleSecondaryMixin, metaclass=PoolMeta):
+    __name__ = 'product.template'
+
+    @classmethod
+    def __setup__(cls):
+        super().__setup__()
+        cls.sale_secondary_uom.states = {
+            'readonly': ~Eval('active', True),
+            'invisible': ~Eval('salable', False),
+            }
+        cls.sale_secondary_uom.depends += ['active', 'salable']
+
+
+class Product(metaclass=PoolMeta):
+    __name__ = 'product.product'
+
+    @property
+    def sale_secondary_uom_normal_rate(self):
+        return self.template.sale_secondary_uom_normal_rate
+
+    @property
+    def sale_secondary_uom_normal_factor(self):
+        return self.template.sale_secondary_uom_normal_factor
+
+
+class ProductCustomer(SaleSecondaryMixin, metaclass=PoolMeta):
+    __name__ = 'sale.product_customer'
+
+    default_uom_category = fields.Function(
+        fields.Many2One('product.uom.category', "Default UOM Category"),
+        'on_change_with_default_uom_category')
+
+    @fields.depends('template', '_parent_template.purchase_uom',
+        'product', '_parent_product.purchase_uom')
+    def on_change_with_default_uom_category(self, name=None):
+        if self.product and self.product.purchase_uom:
+            return self.product.purchase_uom.category.id
+        elif self.template and self.template.purchase_uom:
+            return self.template.purchase_uom.category.id
+
+    @property
+    def sale_uom(self):
+        if self.product and self.product.sale_uom:
+            return self.product.sale_uom
+        elif self.template and self.template.sale_uom:
+            return self.template.sale_uom
diff -r 000000000000 -r 92098bd1ad6a product.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/product.xml       Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data>
+        <record model="ir.ui.view" id="template_view_form">
+            <field name="model">product.template</field>
+            <field name="inherit" ref="product.template_view_form"/>
+            <field name="name">product_template_form</field>
+        </record>
+    </data>
+
+    <data depends="sale_product_customer">
+        <record model="ir.ui.view" id="product_customer_view_form">
+            <field name="model">sale.product_customer</field>
+            <field name="inherit" 
ref="sale_product_customer.product_customer_view_form"/>
+            <field name="name">product_customer_form</field>
+        </record>
+    </data>
+</tryton>
diff -r 000000000000 -r 92098bd1ad6a sale.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sale.py   Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,207 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from decimal import Decimal
+
+from trytond.model import fields
+from trytond.pool import PoolMeta, Pool
+from trytond.pyson import Eval, If
+
+from trytond.modules.product import price_digits
+
+
+class Line(metaclass=PoolMeta):
+    __name__ = 'sale.line'
+
+    secondary_quantity = fields.Function(
+        fields.Float("Secondary Quantity",
+            digits=(16, Eval('secondary_unit_digits', 2)),
+            states={
+                'invisible': ((Eval('type') != 'line')
+                    | ~Eval('secondary_unit')),
+                'readonly': Eval('sale_state') != 'draft',
+                },
+            depends=[
+                'secondary_unit_digits', 'type', 'secondary_unit',
+                'sale_state']),
+        'on_change_with_secondary_quantity', setter='set_secondary')
+    secondary_unit = fields.Many2One(
+        'product.uom', "Secondary Unit", ondelete='RESTRICT',
+        domain=[
+            If(Eval('sale_state') == 'draft',
+                ('category', '=', Eval('product_secondary_uom_category')),
+                ()),
+            ],
+        states={
+            'invisible': ((Eval('type') != 'line')
+                | (~Eval('secondary_uom_factor')
+                    & ~Eval('secondary_uom_rate'))),
+            'readonly': Eval('sale_state') != 'draft',
+            },
+        depends=['product_secondary_uom_category', 'type',
+            'secondary_uom_factor', 'secondary_uom_rate', 'sale_state'])
+    secondary_unit_price = fields.Function(
+        fields.Numeric(
+            "Secondary Unit Price", digits=price_digits,
+            states={
+                'invisible': ((Eval('type') != 'line')
+                    | ~Eval('secondary_unit')),
+                'readonly': Eval('sale_state') != 'draft',
+                },
+            depends=['type', 'secondary_unit', 'sale_state']),
+        'on_change_with_secondary_unit_price', setter='set_secondary')
+
+    secondary_uom_factor = fields.Float("Secondary UOM Factor")
+    secondary_uom_rate = fields.Float("Secondary UOM Rate")
+
+    secondary_unit_digits = fields.Function(
+        fields.Integer("Secondary Unit Digits"),
+        'on_change_with_secondary_unit_digits')
+    product_secondary_uom_category = fields.Function(
+        fields.Many2One(
+            'product.uom.category', "Product Secondary UOM Category"),
+        'on_change_with_product_secondary_uom_category')
+
+    @fields.depends('product')
+    def _secondary_record(self):
+        if self.product and self.product.sale_secondary_uom:
+            return self.product
+
+    @fields.depends('quantity', 'unit', 'secondary_unit',
+        'secondary_uom_factor', 'secondary_uom_rate')
+    def on_change_with_secondary_quantity(self, name=None):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        if (self.quantity and self.unit and self.secondary_unit
+                and (self.secondary_uom_factor or self.secondary_uom_rate)):
+            return Uom.compute_qty(
+                self.unit, self.quantity,
+                self.secondary_unit, round=True,
+                factor=self.secondary_uom_factor, rate=self.secondary_uom_rate)
+        else:
+            return None
+
+    @fields.depends('secondary_quantity', 'secondary_unit', 'unit',
+        'secondary_uom_factor', 'secondary_uom_rate',
+        methods=['on_change_quantity', 'on_change_with_amount'])
+    def on_change_secondary_quantity(self):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        if (self.secondary_quantity and self.secondary_unit and self.unit
+                and (self.secondary_uom_factor or self.secondary_uom_rate)):
+            self.quantity = Uom.compute_qty(
+                self.secondary_unit, self.secondary_quantity,
+                self.unit, round=True,
+                factor=self.secondary_uom_rate, rate=self.secondary_uom_factor)
+            self.on_change_quantity()
+            self.amount = self.on_change_with_amount()
+
+    @fields.depends('unit_price', 'unit', 'secondary_unit',
+        'secondary_uom_factor', 'secondary_uom_rate')
+    def on_change_with_secondary_unit_price(self, name=None):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        if (self.unit_price is not None and self.unit and self.secondary_unit
+                and (self.secondary_uom_factor or self.secondary_uom_rate)):
+            return Uom.compute_price(
+                self.unit, self.unit_price, self.secondary_unit,
+                factor=self.secondary_uom_factor, rate=self.secondary_uom_rate
+                ).quantize(Decimal(1) / 10 ** price_digits[1])
+        else:
+            return None
+
+    @fields.depends('secondary_unit_price', 'secondary_unit', 'unit',
+        'secondary_uom_factor', 'secondary_uom_rate',
+        methods=['on_change_with_amount'])
+    def on_change_secondary_unit_price(self, name=None):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        if (self.secondary_unit_price is not None
+                and self.secondary_unit and self.unit
+                and (self.secondary_uom_factor or self.secondary_uom_rate)):
+            self.unit_price = Uom.compute_price(
+                self.secondary_unit, self.secondary_unit_price, self.unit,
+                factor=self.secondary_uom_rate, rate=self.secondary_uom_factor
+                ).quantize(Decimal(1) / 10 ** price_digits[1])
+            self.amount = self.on_change_with_amount()
+
+    @fields.depends(methods=[
+            'on_change_secondary_quantity', 'on_change_secondary_unit_price'])
+    def on_change_secondary_unit(self):
+        self.on_change_secondary_quantity()
+        self.on_change_secondary_unit_price()
+
+    @fields.depends('secondary_unit')
+    def on_change_with_secondary_unit_digits(self, name=None):
+        if self.secondary_unit:
+            return self.secondary_unit.digits
+
+    @fields.depends(methods=['_secondary_record'])
+    def on_change_with_product_secondary_uom_category(self, name=None):
+        secondary_record = self._secondary_record()
+        if secondary_record:
+            return secondary_record.sale_secondary_uom.category.id
+
+    @classmethod
+    def set_secondary(cls, lines, name, value):
+        pass
+
+    @fields.depends('secondary_unit',
+        methods=['on_change_with_secondary_quantity', '_secondary_record'])
+    def on_change_product(self):
+        super().on_change_product()
+        secondary_record = self._secondary_record()
+        if secondary_record and self.secondary_unit:
+            secondary_uom = secondary_record.sale_secondary_uom
+            if secondary_uom:
+                if self.secondary_unit.category != secondary_uom.category:
+                    self.secondary_unit = None
+
+        if secondary_record:
+            self.secondary_uom_factor = (
+                secondary_record.sale_secondary_uom_normal_factor)
+            self.secondary_uom_rate = (
+                secondary_record.sale_secondary_uom_normal_rate)
+        else:
+            self.secondary_unit = None
+            self.secondary_uom_factor = None
+            self.secondary_uom_rate = None
+        self.secondary_quantity = self.on_change_with_secondary_quantity()
+
+    def get_invoice_line(self):
+        pool = Pool()
+        InvoiceLine = pool.get('account.invoice.line')
+        lines = super().get_invoice_line()
+        if hasattr(InvoiceLine, 'secondary_unit'):
+            for line in lines:
+                if line.unit == self.unit:
+                    line.secondary_unit = self.secondary_unit
+        return lines
+
+    def get_move(self, shipment_type):
+        move = super().get_move(shipment_type)
+        if move and hasattr(move.__class__, 'secondary_unit'):
+            if move.uom == self.unit:
+                move.secondary_unit = self.secondary_unit
+        return move
+
+
+class Line_ProductCustomer(metaclass=PoolMeta):
+    __name__ = 'sale.line'
+
+    @fields.depends('product_customer')
+    def _secondary_record(self):
+        if self.product_customer and self.product_customer.sale_secondary_uom:
+            return self.product_customer
+        return super()._secondary_record()
+
+
+class OpportunityLine(metaclass=PoolMeta):
+    __name__ = 'sale.opportunity.line'
+
+    def _set_sale_line_quantity(self, sale_line):
+        super()._set_sale_line_quantity(sale_line)
+        if self.unit.category != self.product.sale_uom.category:
+            sale_line.unit = self.product.sale_uom
+            sale_line.secondary_quantity = self.quantity
+            sale_line.secondary_unit = self.unit
+            sale_line.on_change_secondary_quantity()
diff -r 000000000000 -r 92098bd1ad6a sale.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sale.xml  Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data>
+        <record model="ir.ui.view" id="sale_line_view_form">
+            <field name="model">sale.line</field>
+            <field name="inherit" ref="sale.sale_line_view_form"/>
+            <field name="name">sale_line_form</field>
+        </record>
+
+        <record model="ir.ui.view" id="sale_line_view_tree">
+            <field name="model">sale.line</field>
+            <field name="inherit" ref="sale.sale_line_view_tree"/>
+            <field name="name">sale_line_tree</field>
+        </record>
+
+        <record model="ir.ui.view" id="sale_line_view_tree_sequence">
+            <field name="model">sale.line</field>
+            <field name="inherit" ref="sale.sale_line_view_tree_sequence"/>
+            <field name="name">sale_line_tree</field>
+        </record>
+    </data>
+</tryton>
diff -r 000000000000 -r 92098bd1ad6a setup.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/setup.py  Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,132 @@
+#!/usr/bin/env python3
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+import io
+import os
+import re
+from configparser import ConfigParser
+from setuptools import setup, find_packages
+
+
+def read(fname):
+    return io.open(
+        os.path.join(os.path.dirname(__file__), fname),
+        'r', encoding='utf-8').read()
+
+
+def get_require_version(name):
+    if minor_version % 2:
+        require = '%s >= %s.%s.dev0, < %s.%s'
+    else:
+        require = '%s >= %s.%s, < %s.%s'
+    require %= (name, major_version, minor_version,
+        major_version, minor_version + 1)
+    return require
+
+
+config = ConfigParser()
+config.read_file(open(os.path.join(os.path.dirname(__file__), 'tryton.cfg')))
+info = dict(config.items('tryton'))
+for key in ('depends', 'extras_depend', 'xml'):
+    if key in info:
+        info[key] = info[key].strip().splitlines()
+version = info.get('version', '0.0.1')
+major_version, minor_version, _ = version.split('.', 2)
+major_version = int(major_version)
+minor_version = int(minor_version)
+name = 'trytond_sale_secondary_unit'
+
+download_url = 'http://downloads.tryton.org/%s.%s/' % (
+    major_version, minor_version)
+if minor_version % 2:
+    version = '%s.%s.dev0' % (major_version, minor_version)
+    download_url = (
+        'hg+http://hg.tryton.org/modules/%s#egg=%s-%s' % (
+            name[8:], name, version))
+
+requires = []
+for dep in info.get('depends', []):
+    if not re.match(r'(ir|res)(\W|$)', dep):
+        requires.append(get_require_version('trytond_%s' % dep))
+requires.append(get_require_version('trytond'))
+
+tests_require = [get_require_version('proteus'),
+    get_require_version('trytond_account_invoice_secondary_unit'),
+    get_require_version('trytond_stock_secondary_unit'),
+    get_require_version('trytond_sale_product_customer')]
+dependency_links = []
+if minor_version % 2:
+    dependency_links.append('https://trydevpi.tryton.org/')
+
+setup(name=name,
+    version=version,
+    description='Tryton module to add a secondary unit on sale line',
+    long_description=read('README.rst'),
+    author='Tryton',
+    author_email='b...@tryton.org',
+    url='http://www.tryton.org/',
+    download_url=download_url,
+    project_urls={
+        "Bug Tracker": 'https://bugs.tryton.org/',
+        "Documentation": 'https://docs.tryton.org/',
+        "Forum": 'https://www.tryton.org/forum',
+        "Source Code": 'https://hg.tryton.org/modules/sale_secondary_unit',
+        },
+    keywords='tryton sale secondary unit',
+    package_dir={'trytond.modules.sale_secondary_unit': '.'},
+    packages=(
+        ['trytond.modules.sale_secondary_unit'] +
+        ['trytond.modules.sale_secondary_unit.%s' % p for p in find_packages()]
+        ),
+    package_data={
+        'trytond.modules.sale_secondary_unit': (info.get('xml', [])
+            + ['tryton.cfg', 'view/*.xml', 'locale/*.po', '*.fodt',
+                'icons/*.svg', 'tests/*.rst']),
+        },
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Environment :: Plugins',
+        'Framework :: Tryton',
+        'Intended Audience :: Developers',
+        'Intended Audience :: Financial and Insurance Industry',
+        'Intended Audience :: Legal Industry',
+        'License :: OSI Approved :: GNU General Public License v3 or later 
(GPLv3+)',
+        'Natural Language :: Bulgarian',
+        'Natural Language :: Catalan',
+        'Natural Language :: Chinese (Simplified)',
+        'Natural Language :: Czech',
+        'Natural Language :: Dutch',
+        'Natural Language :: English',
+        'Natural Language :: French',
+        'Natural Language :: German',
+        'Natural Language :: Hungarian',
+        'Natural Language :: Italian',
+        'Natural Language :: Persian',
+        'Natural Language :: Polish',
+        'Natural Language :: Portuguese (Brazilian)',
+        'Natural Language :: Russian',
+        'Natural Language :: Slovenian',
+        'Natural Language :: Spanish',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy',
+        'Topic :: Office/Business',
+        ],
+    license='GPL-3',
+    python_requires='>=3.5',
+    install_requires=requires,
+    dependency_links=dependency_links,
+    zip_safe=False,
+    entry_points="""
+    [trytond.modules]
+    sale_secondary_unit = trytond.modules.sale_secondary_unit
+    """,
+    test_suite='tests',
+    test_loader='trytond.test_loader:Loader',
+    tests_require=tests_require,
+    )
diff -r 000000000000 -r 92098bd1ad6a stock.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/stock.py  Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,35 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.pool import PoolMeta, Pool
+
+
+class Move(metaclass=PoolMeta):
+    __name__ = 'stock.move'
+
+    def get_product_secondary_uom_category(self, name):
+        pool = Pool()
+        SaleLine = pool.get('sale.line')
+        category = super().get_product_secondary_uom_category(name)
+        if isinstance(self.origin, SaleLine):
+            if self.origin.secondary_unit:
+                category = self.origin.secondary_unit.category.id
+        return category
+
+    @property
+    def secondary_uom_factor(self):
+        pool = Pool()
+        SaleLine = pool.get('sale.line')
+        factor = super().secondary_uom_factor
+        if isinstance(self.origin, SaleLine):
+            factor = self.origin.secondary_uom_factor
+        return factor
+
+    @property
+    def secondary_uom_rate(self):
+        pool = Pool()
+        SaleLine = pool.get('sale.line')
+        factor = super().secondary_uom_rate
+        if isinstance(self.origin, SaleLine):
+            factor = self.origin.secondary_uom_rate
+        return factor
diff -r 000000000000 -r 92098bd1ad6a stock.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/stock.xml Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data depends="stock_secondary_unit">
+        <record model="ir.ui.view" id="move_view_list_shipment">
+            <field name="model">stock.move</field>
+            <field name="inherit" ref="sale.move_view_list_shipment"/>
+            <field name="name">stock_move_list</field>
+        </record>
+    </data>
+</tryton>
diff -r 000000000000 -r 92098bd1ad6a tests/__init__.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/__init__.py Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,9 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+try:
+    from trytond.modules.sale_secondary_unit.tests.test_sale_secondary_unit 
import suite
+except ImportError:
+    from .test_sale_secondary_unit import suite
+
+__all__ = ['suite']
diff -r 000000000000 -r 92098bd1ad6a tests/scenario_sale_secondary_unit.rst
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/scenario_sale_secondary_unit.rst    Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,132 @@
+============================
+Sale Secondary Unit Scenario
+============================
+
+Imports::
+
+    >>> from decimal import Decimal
+    >>> from proteus import Model, Wizard
+    >>> from trytond.tests.tools import activate_modules
+    >>> from trytond.modules.company.tests.tools import create_company, \
+    ...     get_company
+    >>> from trytond.modules.account.tests.tools import create_chart, \
+    ...     get_accounts
+
+Install sale_secondary_unit::
+
+    >>> config = activate_modules(
+    ...     ['sale_secondary_unit',
+    ...     'account_invoice_secondary_unit',
+    ...     'stock_secondary_unit'])
+
+Create company::
+
+    >>> _ = create_company()
+    >>> company = get_company()
+
+Create chart of accounts::
+
+    >>> _ = create_chart(company)
+    >>> accounts = get_accounts(company)
+
+Create customer::
+
+    >>> Party = Model.get('party.party')
+    >>> customer = Party(name="Customer")
+    >>> customer.save()
+
+Create account categories::
+
+    >>> ProductCategory = Model.get('product.category')
+    >>> account_category = ProductCategory(name="Account Category")
+    >>> account_category.accounting = True
+    >>> account_category.account_expense = accounts['expense']
+    >>> account_category.account_revenue = accounts['revenue']
+    >>> account_category.save()
+
+Create product::
+
+    >>> ProductUom = Model.get('product.uom')
+    >>> unit, = ProductUom.find([('name', '=', "Unit")])
+    >>> gr, = ProductUom.find([('name', '=', "Gram")])
+    >>> kg, = ProductUom.find([('name', '=', "Kilogram")])
+    >>> ProductTemplate = Model.get('product.template')
+
+    >>> template = ProductTemplate()
+    >>> template.name = 'product'
+    >>> template.default_uom = unit
+    >>> template.type = 'goods'
+    >>> template.salable = True
+    >>> template.sale_secondary_uom = gr
+    >>> template.sale_secondary_uom_factor = 200
+    >>> template.sale_secondary_uom_rate
+    0.005
+    >>> template.list_price = Decimal('10')
+    >>> template.account_category = account_category
+    >>> template.save()
+    >>> product, = template.products
+
+Sale product::
+
+    >>> Sale = Model.get('sale.sale')
+    >>> sale = Sale()
+    >>> sale.party = customer
+    >>> line = sale.lines.new()
+    >>> line.product = product
+    >>> line.quantity = 10
+
+Check secondary unit::
+
+    >>> line.secondary_unit = kg
+    >>> line.secondary_quantity
+    2.0
+    >>> line.secondary_unit_price
+    Decimal('50.0000')
+    >>> line.secondary_unit_price = Decimal('40')
+    >>> line.unit_price
+    Decimal('8.0000')
+    >>> line.secondary_quantity = 1000
+    >>> line.quantity
+    5000.0
+    >>> line.secondary_unit = gr
+    >>> line.quantity
+    5.0
+
+Confirm sale::
+
+    >>> line.secondary_unit = kg
+    >>> line.quantity = 10
+    >>> sale.click('quote')
+    >>> sale.click('confirm')
+    >>> sale.invoice_state
+    'waiting'
+    >>> sale.shipment_state
+    'waiting'
+
+Check secondary unit on invoice::
+
+    >>> invoice, = sale.invoices
+    >>> line, = invoice.lines
+    >>> line.secondary_unit == kg
+    True
+    >>> line.secondary_quantity
+    2.0
+    >>> line.secondary_unit_price
+    Decimal('50.0000')
+
+Check secondary unit on move::
+
+    >>> move, = sale.moves
+    >>> move.secondary_unit == kg
+    True
+    >>> move.secondary_quantity
+    2.0
+    >>> move.secondary_unit_price
+    Decimal('50.0000')
+
+    >>> shipment, = sale.shipments
+    >>> move, = shipment.inventory_moves
+    >>> move.secondary_unit == kg
+    True
+    >>> move.secondary_quantity
+    2.0
diff -r 000000000000 -r 92098bd1ad6a tests/test_sale_secondary_unit.py
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test_sale_secondary_unit.py Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,31 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+import unittest
+
+import doctest
+
+from trytond.tests.test_tryton import ModuleTestCase
+from trytond.tests.test_tryton import suite as test_suite
+from trytond.tests.test_tryton import doctest_teardown
+from trytond.tests.test_tryton import doctest_checker
+
+
+class SaleSecondaryUnitTestCase(ModuleTestCase):
+    'Test Sale Secondary Unit module'
+    module = 'sale_secondary_unit'
+    extras = [
+        'account_invoice_secondary_unit', 'stock_secondary_unit',
+        'sale_product_customer']
+
+
+def suite():
+    suite = test_suite()
+    suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
+            SaleSecondaryUnitTestCase))
+    suite.addTests(doctest.DocFileSuite(
+            'scenario_sale_secondary_unit.rst',
+            tearDown=doctest_teardown, encoding='utf-8',
+            checker=doctest_checker,
+            optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
+    return suite
diff -r 000000000000 -r 92098bd1ad6a tox.ini
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tox.ini   Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,15 @@
+[tox]
+envlist = {py35,py36,py37}-{sqlite,postgresql},pypy3-{sqlite,postgresql}
+
+[testenv]
+commands = {envpython} setup.py test
+deps =
+    {py35,py36,py37}-postgresql: psycopg2 >= 2.5
+    pypy3-postgresql: psycopg2cffi >= 2.5
+    {py35,py36}-sqlite: sqlitebck
+setenv =
+    sqlite: TRYTOND_DATABASE_URI={env:SQLITE_URI:sqlite://}
+    postgresql: TRYTOND_DATABASE_URI={env:POSTGRESQL_URI:postgresql://}
+    sqlite: DB_NAME={env:SQLITE_NAME::memory:}
+    postgresql: DB_NAME={env:POSTGRESQL_NAME:test}
+install_command = pip install --pre --find-links https://trydevpi.tryton.org/ 
{opts} {packages}
diff -r 000000000000 -r 92098bd1ad6a tryton.cfg
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tryton.cfg        Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,18 @@
+[tryton]
+version=5.3.0
+depends:
+    account_invoice
+    ir
+    product
+    sale
+    stock
+extras_depend:
+    account_invoice_secondary_unit
+    sale_opportunity
+    sale_product_customer
+    stock_secondary_unit
+xml:
+    product.xml
+    sale.xml
+    stock.xml
+    message.xml
diff -r 000000000000 -r 92098bd1ad6a view/product_customer_form.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/view/product_customer_form.xml    Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="//field[@name='code']" position="after">
+        <label name="sale_secondary_uom"/>
+        <field name="sale_secondary_uom"/>
+        <group id="sale_secondary_uom" col="-1" colspan="2">
+            <label name="sale_secondary_uom_factor" string="Factor:"/>
+            <field name="sale_secondary_uom_factor"/>
+            <label name="sale_secondary_uom_rate" string="Rate:"/>
+            <field name="sale_secondary_uom_rate"/>
+        </group>
+    </xpath>
+</data>
diff -r 000000000000 -r 92098bd1ad6a view/product_template_form.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/view/product_template_form.xml    Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="//page[@id='customers']//field[@name='sale_uom']" 
position="after">
+        <newline/>
+        <label name="sale_secondary_uom"/>
+        <field name="sale_secondary_uom"/>
+        <group id="sale_secondary_uom" col="-1" colspan="2">
+            <label name="sale_secondary_uom_factor" string="Factor:"/>
+            <field name="sale_secondary_uom_factor"/>
+            <label name="sale_secondary_uom_rate" string="Rate:"/>
+            <field name="sale_secondary_uom_rate"/>
+        </group>
+    </xpath>
+</data>
diff -r 000000000000 -r 92098bd1ad6a view/sale_line_form.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/view/sale_line_form.xml   Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="//field[@name='amount']" position="after">
+        <separator name="secondary_unit" colspan="4"/>
+        <label name="secondary_quantity" string="Quantity:"/>
+        <field name="secondary_quantity"/>
+        <label name="secondary_unit" string="Unit:"/>
+        <field name="secondary_unit"/>
+        <label name="secondary_unit_price" string="Unit Price:"/>
+        <field name="secondary_unit_price"/>
+        <newline/>
+    </xpath>
+</data>
diff -r 000000000000 -r 92098bd1ad6a view/sale_line_tree.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/view/sale_line_tree.xml   Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="//field[@name='unit_price']" position="after">
+        <field name="secondary_quantity"/>
+        <field name="secondary_unit"/>
+        <field name="secondary_unit_price"/>
+    </xpath>
+</data>
diff -r 000000000000 -r 92098bd1ad6a view/stock_move_list.xml
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/view/stock_move_list.xml  Sun Jul 28 14:34:20 2019 +0200
@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<data>
+    <xpath expr="//field[@name='uom']" position="after">
+        <field name="secondary_quantity"/>
+        <field name="secondary_unit"/>
+    </xpath>
+</data>

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