[ADD] 9.0 pos return (#117)

* [ADD] new module 'pos_return_order';

* [ADD] new module 'pos_return_order' to improve default return features;

* [ADD] fr translation;

* [REF] cosmetic changes

pos_return_order/README.rst

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+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+   :alt: License: AGPL-3
+
+==================
+PoS - Return Order
+==================
+
+This module extends the functionality of odoo Point Of Sale about POS Order
+returns.
+
+With this module, it is now forbidden to return more quantity than the initial
+one.
+
+A link is created between the returned Order and the initial Order.
+A link is created between the returned Order Line and the initial Order Line.
+
+Implemented Features
+====================
+
+* A wizard that allow to select just some products to return:
+
+.. image:: /pos_return_order/static/description/partial_return_wizard.png
+
+Implemented Constraints
+=======================
+
+* User can not return more products than the initial quantity:
+
+.. image:: /pos_return_order/static/description/returned_qty_over_initial.png
+
+* If a line has been partially refund, only a reduced quantity can be returned:
+
+.. image:: /pos_return_order/static/description/sum_returned_qty_over_initial.png
+
+* It is not possible to set a negative quantity if the initial Pos Order is
+  not indicated:
+
+.. image:: /pos_return_order/static/description/initial_pos_order_required.png
+
+Configuration
+=============
+
+In some case, you want to let the possibility to allow negative quantity
+in a PoS Order, without mentioning initial order. This can happen for special
+products like returnable products, ...
+
+In that case, a checkbox is possible on Product Form View to allow such case
+
+.. image:: /pos_return_order/static/description/product_returnable_bottle.png
+
+Usage
+=====
+
+.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
+   :alt: Try me on Runbot
+   :target: https://runbot.odoo-community.org/runbot/184/9.0
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/OCA/pos/issues>`_. In case of trouble, please
+check there if your issue has already been reported. If you spotted it first,
+help us smash it by providing detailed and welcomed feedback.
+
+Credits
+=======
+
+Contributors
+------------
+
+* Sylvain LE GAL <https://twitter.com/legalsylvain>
+
+Funders
+-------
+
+The development of this module has been financially supported by:
+
+* La Louve (www.lalouve.net)
+* GRAP, Groupement Régional Alimentaire de Proximité (www.grap.coop)
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+To contribute to this module, please visit https://odoo-community.org.

pos_return_order/__init__.py

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+# -*- coding: utf-8 -*-
+from . import models

pos_return_order/__openerp__.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+{
+    'name': 'Point of Sale Return Order',
+    'version': '9.0.1.0.0',
+    'category': 'Point Of Sale',
+    'summary': 'Point of Sale Return Order',
+    'author': 'La Louve, GRAP, Odoo Community Association (OCA)',
+    'website': 'http://www.lalouve.net',
+    'depends': [
+        'point_of_sale',
+    ],
+    'data': [
+        'views/action.xml',
+        'views/pos_order_view.xml',
+        'views/pos_order_line_view.xml',
+        'views/product_product_view.xml',
+        'views/pos_partial_return_wizard_view.xml',
+    ],
+    'demo': [
+        'demo/product_product.xml',
+    ],
+    'installable': True,
+}

pos_return_order/demo/product_product.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="product_product_returnable_bottle" model="product.product">
+
+        <field name="name">Returnable Bottle</field>
+        <field name="default_code">RET-BOTL</field>
+        <field name="categ_id" ref="product.product_category_all" />
+        <field name="uom_id" ref="product.product_uom_unit" />
+        <field name="pos_categ_id" ref="point_of_sale.soft" />
+        <field name="sale_ok" eval="True" />
+        <field name="available_in_pos" eval="True" />
+        <field name="pos_allow_negative_qty" eval="True" />
+        <field name="list_price" eval="0.20" />
+        <field name="image" type="base64" file="pos_return_order/static/img/product_returnable_bottle-image.jpg"/>
+    </record>
+
+</odoo>

pos_return_order/i18n/fr.po

@@ -0,0 +1,189 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* pos_return_order
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 9.0c\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2016-04-03 23:54+0000\n"
+"PO-Revision-Date: 2016-04-03 23:54+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: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_product_template_pos_allow_negative_qty
+msgid "Allow Negative Quantity on PoS"
+msgstr "PdV - Autoriser les quantités négatives"
+
+#. module: pos_return_order
+#: model:ir.ui.view,arch_db:pos_return_order.view_partial_return_wizard_form
+msgid "Cancel"
+msgstr "Annuler"
+
+#. module: pos_return_order
+#: model:ir.model.fields,help:pos_return_order.field_pos_partial_return_wizard_line_max_returnable_qty
+msgid "Compute maximum quantity that can be returned for this line, depending of the quantity of the line and other possible refunds."
+msgstr "Calcule la quantité maximum qui peut être retournée pour cette ligne, en fonction de la quantité de la ligne original, et des possibles retours."
+
+#. module: pos_return_order
+#: model:ir.ui.view,arch_db:pos_return_order.view_partial_return_wizard_form
+msgid "Confirm"
+msgstr "Confirmer"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_create_uid
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_create_uid
+msgid "Created by"
+msgstr "Créé par"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_create_date
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_create_date
+msgid "Created on"
+msgstr "Créé le"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_display_name
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_display_name
+msgid "Display Name"
+msgstr "Nom affiché"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_id
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_id
+msgid "ID"
+msgstr "ID"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_initial_qty
+msgid "Initial Quantity"
+msgstr "Quantité initial"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard___last_update
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line___last_update
+msgid "Last Modified on"
+msgstr "Dernière modification le"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_write_uid
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_write_uid
+msgid "Last Updated by"
+msgstr "Mis à jour par"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_write_date
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_write_date
+msgid "Last Updated on"
+msgstr "Mis à jour le"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_pos_order_line_id
+msgid "Line To Return"
+msgstr "Ligne à retourner"
+
+#. module: pos_return_order
+#: model:ir.model,name:pos_return_order.model_pos_order_line
+msgid "Lines of Point of Sale"
+msgstr "Lignes de Points de Vente"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_ids
+#: model:ir.ui.view,arch_db:pos_return_order.view_partial_return_wizard_form
+msgid "Lines to Return"
+msgstr "Lignes à retourner"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_order_id
+msgid "Order to Return"
+msgstr "Vente à retourner"
+
+#. module: pos_return_order
+#: model:ir.ui.view,arch_db:pos_return_order.view_partial_return_wizard_form
+#: model:ir.ui.view,arch_db:pos_return_order.view_pos_order_form
+msgid "Partial Return"
+msgstr "Retourner partiellement"
+
+#. module: pos_return_order
+#: model:ir.actions.act_window,name:pos_return_order.action_pos_partial_return_wizard
+msgid "Partial Return Wizard"
+msgstr "Assistant de retour partiel"
+
+#. module: pos_return_order
+#: model:ir.model,name:pos_return_order.model_pos_order
+msgid "Point of Sale"
+msgstr "Point de vente"
+
+#. module: pos_return_order
+#: model:ir.model,name:pos_return_order.model_product_template
+msgid "Product Template"
+msgstr "Modèle d'article"
+
+#. module: pos_return_order
+#: model:ir.model.fields,help:pos_return_order.field_pos_partial_return_wizard_line_initial_qty
+msgid "Quantity of Product initially sold"
+msgstr "Quantité de produit initialement vendue"
+
+#. module: pos_return_order
+#: model:ir.ui.view,arch_db:pos_return_order.view_pos_order_form
+#: model:ir.ui.view,arch_db:pos_return_order.view_pos_order_line_form
+msgid "Refund"
+msgstr "Avoir"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_order_line_refund_line_ids
+msgid "Refund Lines"
+msgstr "Lignes de vente retournées"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_order_refund_order_ids
+msgid "Refund Orders"
+msgstr "Ventes retournées"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_order_refund_order_qty
+msgid "Refund Orders Quantity"
+msgstr "Nombre de ventes retournées"
+
+#. module: pos_return_order
+#: model:product.product,name:pos_return_order.product_product_returnable_bottle
+#: model:product.template,name:pos_return_order.product_product_returnable_bottle_product_template
+msgid "Returnable Bottle"
+msgstr "Bouteille consignée"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_max_returnable_qty
+msgid "Returnable Quantity"
+msgstr "Quantité retournable"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_order_line_returned_line_id
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_order_returned_order_id
+msgid "Returned Order"
+msgstr "Vente retournée"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_qty
+msgid "Returned Quantity"
+msgstr "Quantité retournée"
+
+#. module: pos_return_order
+#: model:ir.model.fields,field_description:pos_return_order.field_pos_partial_return_wizard_line_wizard_id
+msgid "Wizard"
+msgstr "Assistant"
+
+#. module: pos_return_order
+#: model:ir.model,name:pos_return_order.model_pos_partial_return_wizard
+msgid "pos.partial.return.wizard"
+msgstr "pos.partial.return.wizard"
+
+#. module: pos_return_order
+#: model:ir.model,name:pos_return_order.model_pos_partial_return_wizard_line
+msgid "pos.partial.return.wizard.line"
+msgstr "pos.partial.return.wizard.line"
+

pos_return_order/models/__init__.py

@@ -0,0 +1,6 @@
+# -*- coding: utf-8 -*-
+from . import product_template
+from . import pos_order
+from . import pos_order_line
+from . import pos_partial_return_wizard
+from . import pos_partial_return_wizard_line

pos_return_order/models/pos_order.py

@@ -0,0 +1,80 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+from openerp import fields, models, api
+from openerp.addons import decimal_precision as dp
+
+
+class PosOrder(models.Model):
+    _inherit = 'pos.order'
+
+    # Column Section
+    returned_order_id = fields.Many2one(
+        comodel_name='pos.order', string='Returned Order', readonly=True)
+
+    refund_order_ids = fields.One2many(
+        comodel_name='pos.order', inverse_name='returned_order_id',
+        string='Refund Orders', readonly=True)
+
+    refund_order_qty = fields.Integer(
+        compute='_compute_refund_order_qty', string='Refund Orders Quantity',
+        digits=dp.get_precision('Product Unit of Measure'))
+
+    # Compute Section
+    @api.multi
+    def _compute_refund_order_qty(self):
+        for order in self:
+            order.refund_order_qty = len(order.refund_order_ids)
+
+    @api.multi
+    def _blank_refund(self):
+        self.ensure_one()
+
+        # Call super to use original refund algorithm (session management, ...)
+        ctx = self.env.context.copy()
+        ctx.update({'do_not_check_negative_qty': True})
+        res = super(PosOrder, self.with_context(ctx)).refund()
+
+        # Link Order
+        original_order = self[0]
+        new_order = self.browse(res['res_id'])
+        new_order.returned_order_id = original_order.id
+
+        # Remove created lines and recreate and link Lines
+        new_order.lines.unlink()
+        return res, new_order
+
+    # Action Section
+    @api.multi
+    def refund(self):
+        res, new_order = self._blank_refund()
+
+        for line in self[0].lines:
+            qty = - line.max_returnable_qty([])
+            if qty != 0:
+                copy_line = line.copy()
+                copy_line.write({
+                    'order_id': new_order.id,
+                    'returned_line_id': line.id,
+                    'qty': qty,
+                })
+        return res
+
+    # Action Section
+    @api.multi
+    def partial_refund(self, partial_return_wizard):
+        res, new_order = self._blank_refund()
+
+        for wizard_line in partial_return_wizard.line_ids:
+            qty = - wizard_line.qty
+            if qty != 0:
+                copy_line = wizard_line.pos_order_line_id.copy()
+                copy_line.write({
+                    'order_id': new_order.id,
+                    'returned_line_id': wizard_line.pos_order_line_id.id,
+                    'qty': qty,
+                })
+        return res

pos_return_order/models/pos_order_line.py

@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+from openerp import fields, models, api
+from openerp.exceptions import ValidationError
+from openerp.tools.translate import _
+
+
+class PosOrderLine(models.Model):
+    _inherit = 'pos.order.line'
+
+    # Column Section
+    returned_line_id = fields.Many2one(
+        comodel_name='pos.order.line', string='Returned Order',
+        readonly=True)
+
+    refund_line_ids = fields.One2many(
+        comodel_name='pos.order.line', inverse_name='returned_line_id',
+        string='Refund Lines', readonly=True)
+
+    # Compute Section
+    @api.model
+    def max_returnable_qty(self, ignored_line_ids):
+        qty = self.qty
+        for refund_line in self.refund_line_ids:
+            if refund_line.id not in ignored_line_ids:
+                qty += refund_line.qty
+        return qty
+
+    # Constraint Section
+    @api.one
+    @api.constrains('returned_line_id', 'qty')
+    def _check_return_qty(self):
+        if self.env.context.get('do_not_check_negative_qty', False):
+            return True
+        if self.returned_line_id:
+            if - self.qty > self.returned_line_id.qty:
+                raise ValidationError(_(
+                    "You can not return %d %s of %s because the original"
+                    " Order line only mentions %d %s.") % (
+                        - self.qty, self.product_id.uom_id.name,
+                        self.product_id.name, self.returned_line_id.qty,
+                        self.product_id.uom_id.name))
+            elif - self.qty >\
+                    self.returned_line_id.max_returnable_qty([self.id]):
+                raise ValidationError(_(
+                    "You can not return %d %s of %s because some refunds"
+                    " has been yet done.\n Maximum quantity allowed :"
+                    " %d %s.") % (
+                        - self.qty, self.product_id.uom_id.name,
+                        self.product_id.name,
+                        self.returned_line_id.max_returnable_qty([self.id]),
+                        self.product_id.uom_id.name))
+        else:
+            if self.qty < 0 and\
+                    not self.product_id.product_tmpl_id.pos_allow_negative_qty:
+                raise ValidationError(_(
+                    "For legal and traceability reasons, you can not set a"
+                    " negative quantity (%d %s of %s), without using return"
+                    " wizard.") % (
+                        self.qty, self.product_id.uom_id.name,
+                        self.product_id.name))

pos_return_order/models/pos_partial_return_wizard.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openerp import models, fields, api
+
+
+class PosPartialReturnWizard(models.TransientModel):
+    _name = 'pos.partial.return.wizard'
+
+    order_id = fields.Many2one(
+        comodel_name='pos.order', string='Order to Return')
+
+    line_ids = fields.One2many(
+        comodel_name='pos.partial.return.wizard.line',
+        inverse_name='wizard_id', string='Lines to Return')
+
+    @api.multi
+    def confirm(self):
+        self.ensure_one()
+        return self[0].order_id.partial_refund(self[0])
+
+    @api.model
+    def default_get(self, fields):
+        order_obj = self.env['pos.order']
+        res = super(PosPartialReturnWizard, self).default_get(fields)
+        order = order_obj.browse(self.env.context.get('active_id', False))
+        if order:
+            line_ids = []
+            for line in order.lines:
+                line_ids.append((0, 0, {
+                    'pos_order_line_id': line.id,
+                    'initial_qty': line.qty,
+                    'max_returnable_qty': line.max_returnable_qty([]),
+                }))
+            res.update({
+                'order_id': order.id,
+                'line_ids': line_ids})
+        return res

pos_return_order/models/pos_partial_return_wizard_line.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openerp import fields, models
+
+
+class PosPartialReturnWizardLine(models.TransientModel):
+    _name = 'pos.partial.return.wizard.line'
+
+    wizard_id = fields.Many2one(
+        comodel_name='pos.partial.return.wizard', string='Wizard')
+
+    pos_order_line_id = fields.Many2one(
+        comodel_name='pos.order.line', required=True, readonly=True,
+        string='Line To Return')
+
+    initial_qty = fields.Float(
+        string='Initial Quantity', readonly=True,
+        help="Quantity of Product initially sold")
+
+    max_returnable_qty = fields.Float(
+        string='Returnable Quantity', readonly=True,
+        help="Compute maximum quantity that can be returned for this line,"
+        " depending of the quantity of the line and other possible refunds.")
+
+    qty = fields.Float(string='Returned Quantity', default=0.0)

pos_return_order/models/product_template.py

@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+# @author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+from openerp import fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    # Column Section
+    pos_allow_negative_qty = fields.Boolean(
+        string='Allow Negative Quantity on PoS')

pos_return_order/views/action.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<!--
+Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<odoo>
+
+    <record id="action_pos_partial_return_wizard" model="ir.actions.act_window">
+        <field name="name">Partial Return Wizard</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">pos.partial.return.wizard</field>
+        <field name="view_type">form</field>
+        <field name="view_mode">form</field>
+        <field name="target">new</field>
+    </record>
+
+</odoo>
+

pos_return_order/views/pos_order_line_view.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0"?>
+<!--
+Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<odoo>
+
+    <record id="view_pos_order_line_form" model="ir.ui.view">
+        <field name="model">pos.order.line</field>
+        <field name="inherit_id" ref="point_of_sale.view_pos_order_line_form"/>
+        <field name="arch" type="xml">
+            <group position="after">
+                <group col="4" string="Refund">
+                    <field name="returned_line_id" colspan="4"/>
+                    <field name="refund_line_ids" />
+                </group>
+            </group>
+        </field>
+    </record>
+
+</odoo>

pos_return_order/views/pos_order_view.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0"?>
+<!--
+Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<odoo>
+
+    <record id="view_pos_order_form" model="ir.ui.view">
+        <field name="model">pos.order</field>
+        <field name="inherit_id" ref="point_of_sale.view_pos_pos_form"/>
+        <field name="arch" type="xml">
+            <button name="refund" position="attributes">
+                <attribute name="attrs">{'invisible':['|', ('state','=','draft'), ('returned_order_id', '!=', False)]}</attribute>
+            </button>
+            <button name="refund" position="after">
+                <button name="%(action_pos_partial_return_wizard)d" string="Partial Return" type="action"
+                    attrs="{'invisible':['|', ('state','=','draft'), ('returned_order_id', '!=', False)]}"/>
+            </button>
+            <notebook>
+                <page string="Refund" attrs="{'invisible':[('returned_order_id', '=', False), ('refund_order_qty', '=', 0)]}">
+                    <field name="returned_order_id" attrs="{'invisible':[('returned_order_id', '=', False)]}"/>
+                    <field name="refund_order_ids" attrs="{'invisible':[('refund_order_qty', '=', 0)]}"/>
+                    <field name="refund_order_qty" invisible="1"/>
+                </page>
+            </notebook>
+            <xpath expr="//field[@name='lines']/form/group" position="after">
+                <group col="4" string="Refund">
+                    <field name="returned_line_id" colspan="4"/>
+                    <field name="refund_line_ids" />
+                </group>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>

pos_return_order/views/pos_partial_return_wizard_view.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0"?>
+<!--
+Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<odoo>
+
+    <record id="view_partial_return_wizard_form" model="ir.ui.view">
+        <field name="model">pos.partial.return.wizard</field>
+        <field name="arch" type="xml">
+            <form string="Partial Return">
+                <group string="Lines to Return">
+                    <field name="line_ids" nolabel="1">
+                        <tree editable="bottom">
+                            <field name="pos_order_line_id"/>
+                            <field name="initial_qty"/>
+                            <field name="max_returnable_qty"/>
+                            <field name="qty"/>
+                        </tree>
+                    </field>
+                </group>
+                <footer>
+                    <button string="Confirm" name="confirm" type="object" class="btn-primary"/>
+                    <button string="Cancel" special="cancel" class="btn-default"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+
+</odoo>

pos_return_order/views/product_product_view.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<!--
+Copyright (C) 2016-Today: La Louve (<http://www.lalouve.net/>)
+@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<odoo>
+
+    <record id="view_product_template_form" model="ir.ui.view">
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="point_of_sale.product_template_form_view"/>
+        <field name="arch" type="xml">
+            <field name="to_weight" position="after">
+                <field name="pos_allow_negative_qty" />
+            </field>
+        </field>
+    </record>
+
+</odoo>