[ADD] module pos_price_to_weight (#171)

* [ADD] module pos_price_to_weight

* [FIX] jslint / pylint / flake8 issues

pos_price_to_weight/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
+
+===============================
+Point of Sale - Price to Weight
+===============================
+
+This module extends Odoo Point Of Sale features, to allow to scan barcode
+with price and to compute according quantity.
+
+In Odoo by default, there are three types of barcode rules for products.
+
+* 'Unit Product' (type='product'). Scanning a product will add a unit of this
+  product to the current order.
+* 'Priced product' (type='price'). A price is extracted from the barcode, and
+  a new line with the given price and a quantity = 1 is added to the current
+  order.
+* 'Weighted product' (type='weight). A weight is extracted from the barcode,
+  and a new line with the given weight, and a computed price
+  (quantity * Unit price) is added to the current order.
+
+This module add a new option:
+
+* 'Priced Product (Computed Weight)' (type='price_to_weight'). A price is 
+  extracted from the barcode, and a new line with the given price, and a
+  computed quantity (Price / Unit Price) is added to the current order.
+
+.. image:: /pos_price_to_weight/static/description/barcode_rule.png
+   :width: 800 px
+
+This module is usefull in shops with products scaled, to manage correctly
+stock quantities.
+
+Samples
+
+* Given a product with a unit price of 1,50€ / kg
+* The barcode is 0212345{NNNDD}x where:
+    * 02 is the prefix of the barcode rule
+    * 12345 is the product number
+    * {NNNDD} is the price of the scaled product
+    * x is the control digit
+
+if {NNNDD} is 00265, the price is so 2,65€ and the according quantity is 
+2,65€ / 1,5 €/kg = 1,767 kg
+
+.. image:: /pos_price_to_weight/static/description/pos_test_1.png
+   :width: 800 px
+
+if {NNNDD} is 00810, the price is so 8,10€ and the according quantity is 
+8,10€ / 1,5 €/kg = 5,400 kg
+
+.. image:: /pos_price_to_weight/static/description/pos_test_2.png
+   :width: 800 px
+
+
+Configuration
+=============
+
+* Go to 'Point of Sale' / 'Configuration' / 'Barcode Nomenclatures'
+* Edit your barcode rules, according to your barcodes settings
+
+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
+=======
+
+Images
+------
+
+Icon parts come from http://icons8.com
+
+Contributors
+------------
+
+* Sylvain LE GAL <https://twitter.com/legalsylvain>
+
+
+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_price_to_weight/__init__.py

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

pos_price_to_weight/__openerp__.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2017-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 - Price to Weight',
+    'version': '9.0.1.0.0',
+    'category': 'Point Of Sale',
+    'summary': 'Compute weight based on barcodes with prices',
+    'author': 'La Louve, GRAP, Odoo Community Association (OCA)',
+    'website': 'http://www.lalouve.net/',
+    'license': 'AGPL-3',
+    'depends': [
+        'point_of_sale',
+    ],
+    'data': [
+        'data/barcode_rule.xml',
+        'static/src/xml/templates.xml',
+    ],
+    'demo': [
+        'demo/product_product.xml',
+    ],
+    'installable': True,
+}

pos_price_to_weight/data/barcode_rule.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2017 - Today: GRAP (http://www.grap.coop)
+@author Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<openerp><data>
+
+    <record id="rule_price_to_weight" model="barcode.rule">
+        <field name="name">Price Barcodes (Computed Weight) 2 Decimals</field>
+            <field name="barcode_nomenclature_id" ref="barcodes.default_barcode_nomenclature"/>
+        <field name="type">price_to_weight</field>
+        <field name="pattern">02.....{NNNDD}</field>
+        <field name="sequence">15</field>
+        <field name="encoding">ean13</field>
+    </record>
+
+</data></openerp>

pos_price_to_weight/demo/product_product.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2017 - Today: GRAP (http://www.grap.coop)
+@author Sylvain LE GAL (https://twitter.com/legalsylvain)
+License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+
+<odoo>
+
+    <record id="product_price_to_weight_barcode" model="product.product">
+        <field name="name">Apples (with Price To Weight Barcode)</field>
+        <field name="barcode">0212345000007</field>
+        <field name="list_price">1.50</field>
+        <field name="uom_id" ref="product.product_uom_kgm"/>
+        <field name="uom_po_id" ref="product.product_uom_kgm"/>
+    </record>
+
+</odoo>

pos_price_to_weight/i18n/fr.po

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+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* pos_price_to_weight
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 9.0c\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2017-05-10 01:40+0000\n"
+"PO-Revision-Date: 2017-05-10 01:40+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_price_to_weight
+#: model:product.product,name:pos_price_to_weight.product_price_to_weight_barcode
+#: model:product.template,name:pos_price_to_weight.product_price_to_weight_barcode_product_template
+msgid "Apples (with Price To Weight Barcode)"
+msgstr "Pommes (Avec un code barre Prix vers Pois)"
+
+#. module: pos_price_to_weight
+#: code:addons/pos_price_to_weight/models/barcode_rule.py:17
+#, python-format
+msgid "Priced Product (Computed Weight)"
+msgstr "Code Barre Prix (Poid calculé)"

pos_price_to_weight/models/__init__.py

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

pos_price_to_weight/models/barcode_rule.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2017-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 _, api, models
+
+
+class BarcodeRule(models.Model):
+    _inherit = 'barcode.rule'
+
+    @api.model
+    def _get_type_selection(self):
+        res = super(BarcodeRule, self)._get_type_selection()
+        res.append(
+            ('price_to_weight', _('Priced Product (Computed Weight)')))
+        return res

pos_price_to_weight/static/src/js/models.js

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+///*
+//    Copyright (C) 2017-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.define('pos_price_to_weight.models', function (require) {
+    "use strict";
+
+    var models = require('point_of_sale.models');
+
+    var _super_PosModel = models.PosModel.prototype;
+
+    models.PosModel = models.PosModel.extend({
+
+        scan_product: function(parsed_code) {
+            if (! (parsed_code.type === 'price_to_weight')){
+                // Normal behaviour
+                return _super_PosModel.scan_product.apply(this, [parsed_code]);
+            }
+            // Compute quantity, based on price and unit price
+            var selectedOrder = this.get_order();
+            var product = this.db.get_product_by_barcode(parsed_code.base_code);
+            if(!product){
+                return false;
+            }
+            var quantity = 0;
+            var price = parseFloat(parsed_code.value) || 0;
+            if (price !== 0 && product.price !== 0){
+                quantity = price / product.price;
+            }
+            selectedOrder.add_product(product, {quantity:  quantity, merge: false});
+            return true;
+        },
+
+    });
+});

pos_price_to_weight/static/src/js/screens.js

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+/*
+    Copyright (C) 2017-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.define('pos_price_to_weight.screens', function (require) {
+    "use strict";
+
+    var screens = require('point_of_sale.screens');
+
+    screens.ScreenWidget.include({
+        show: function(){
+            this._super();
+            var self = this;
+            this.pos.barcode_reader.set_action_callback({
+                'price_to_weight': _.bind(self.barcode_product_action, self),
+            });
+        },
+    });
+});

pos_price_to_weight/static/src/xml/templates.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2017-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>
+    <template id="assets_frontend" inherit_id="point_of_sale.assets">
+        <xpath expr="." position="inside">
+            <script type="text/javascript" src="/pos_price_to_weight/static/src/js/screens.js"/>
+            <script type="text/javascript" src="/pos_price_to_weight/static/src/js/models.js"/>
+        </xpath>
+    </template>
+</odoo>
+
+