[ADD] pos_second_uom: allow selling products in secondary unit of mea…

pos_second_uom/__init__.py

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+from . import models

pos_second_uom/__manifest__.py

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+{
+    "name": "POS Second UoM",
+    "category": "Point of Sale",
+    "depends": ["product", "uom", "point_of_sale"],
+    "author": "habar",
+    "data": [
+        "views/product_template_view.xml",
+    ],
+    "assets": {
+        "point_of_sale._assets_pos": [
+            "pos_second_uom/static/src/js/control_buttons.js",
+            "pos_second_uom/static/src/xml/control_button.xml",
+        ],
+    },
+    "installable": True,
+    "application": False,
+    "license": "LGPL-3",
+}

pos_second_uom/models/__init__.py

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+from . import product_template
+from . import product_product

pos_second_uom/models/product_product.py

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+from odoo import api, models
+
+
+class ProductProduct(models.Model):
+    _inherit = "product.product"
+
+    @api.model
+    def _load_pos_data_fields(self, config_id):
+        fields_list = super()._load_pos_data_fields(config_id)
+        fields_list.append("pos_second_uom_id")
+        return fields_list

pos_second_uom/models/product_template.py

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+from odoo import _, api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    pos_second_uom_id = fields.Many2one(
+        'uom.uom',
+        string="POS Second Unit of Measure"
+    )
+    pos_second_uom_domain_ids = fields.Many2many('uom.uom', compute="_compute_pos_second_uom_domain_ids", string="All Pos Second Uom")
+
+    @api.depends("uom_id")
+    def _compute_pos_second_uom_domain_ids(self):
+        for rec in self:
+            if not rec.uom_id:
+                rec.pos_second_uom_domain_ids = self.env['uom.uom'].search([])
+                continue
+
+            root_uom = rec.uom_id
+            while root_uom.relative_uom_id:
+                root_uom = root_uom.relative_uom_id
+
+            compatible_uoms = self.env['uom.uom'].search([
+                '|', ('id', '=', root_uom.id), ('parent_path', 'like', f'%{root_uom.id}%')
+            ])
+
+            rec.pos_second_uom_domain_ids = compatible_uoms
+
+    @api.constrains('pos_second_uom_id', 'uom_id')
+    def _check_uom_compatibility(self):
+        for record in self:
+            if record.pos_second_uom_id and record.uom_id:
+                root_main = record.uom_id
+                while root_main.relative_uom_id:
+                    root_main = root_main.relative_uom_id
+
+                root_second = record.pos_second_uom_id
+                while root_second.relative_uom_id:
+                    root_second = root_second.relative_uom_id
+
+                if root_main.id != root_second.id:
+                    raise ValidationError(_("Selected Second UoM must be from the same unit hierarchy family!"))

pos_second_uom/static/src/js/control_buttons.js

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+import { ControlButtons } from "@point_of_sale/app/screens/product_screen/control_buttons/control_buttons";
+import { NumberPopup } from "@point_of_sale/app/components/popups/number_popup/number_popup";
+import { makeAwaitable } from "@point_of_sale/app/utils/make_awaitable_dialog";
+import { patch } from "@web/core/utils/patch";
+
+patch(ControlButtons.prototype, {
+    displaySecondUomButton() {
+        const line = this.currentOrder?.getSelectedOrderline();
+        return line?.product_id?.pos_second_uom_id;
+    },
+
+    async clickSecondUomButton() {
+        const line = this.currentOrder?.getSelectedOrderline();
+
+        if (!line) {
+            return;
+        }
+
+        const secondUom = line.product_id.pos_second_uom_id;
+        const mainUom = line.product_id.uom_id;
+
+        const qty = await makeAwaitable(
+            this.dialog,
+            NumberPopup,
+            {
+                title: `Enter ${secondUom.name} Quantity`,
+                startingValue: 0,
+            }
+        );
+
+        if (qty === null || qty === undefined) {
+            return;
+        }
+
+        const enteredQty = parseFloat(qty);
+
+        if (isNaN(enteredQty)) {
+            return;
+        }
+
+        const convertedQty = (enteredQty * secondUom.factor) / mainUom.factor;
+
+        line.setQuantity(convertedQty);
+    },
+});

pos_second_uom/static/src/xml/control_button.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<templates xml:space="preserve">
+    <t t-inherit="point_of_sale.ControlButtons" t-inherit-mode="extension">
+        <xpath expr="//button[hasclass('more-btn')]" position="before">
+            <button t-if="displaySecondUomButton()"
+                    t-att-class="ui.isSmall
+                        ? 'btn bg-100 btn-md py-2 mt-2 text-start flex-shrink-0'
+                        : 'btn btn-secondary btn-lg flex-shrink-0'"
+                    t-on-click="clickSecondUomButton">
+                Add Quantity
+            </button>
+        </xpath>
+    </t>
+
+    <t t-inherit="point_of_sale.Orderline" t-inherit-mode="extension">
+        <xpath expr="//div//span[hasclass('qty')]" position="after">
+            <span t-if="props.line.product_id.uom_id" class="pos-uom-tag me-1 small fw-bold" style="font-size: 0.9em; vertical-align: middle;">
+                <t t-out="props.line.product_id.uom_id.name"/>
+            </span>
+        </xpath>
+    </t>
+</templates>

pos_second_uom/views/product_template_view.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="product_template_form_view_pos_second_uom" model="ir.ui.view">
+        <field name="name">product.template.form.pos.second.uom</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="point_of_sale.product_template_form_view"/>
+        <field name="arch" type="xml">
+            <xpath expr="//group[@name='pos']" position="inside">
+                <field name="pos_second_uom_domain_ids" invisible="1"/>
+                <field name="pos_second_uom_id" domain="[('id', 'in', pos_second_uom_domain_ids)]"/>
+            </xpath>
+        </field>
+    </record>
+</odoo>