[ADD] website_sale_float_cart_qty: Add float qty in cart

setup/website_sale_float_cart_qty/odoo/addons/website_sale_float_cart_qty

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+../../../../website_sale_float_cart_qty

setup/website_sale_float_cart_qty/setup.py

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+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)

website_sale_float_cart_qty/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
+
+================================
+Website Sale Float Cart Quantity
+================================
+
+Overview
+--------
+
+This module extends the functionality of the `website_sale` module in Odoo by allowing float quantities in the shopping cart instead of integer quantities.
+
+Features
+--------
+
+- Enables users to add fractional quantities of products to the shopping cart.
+- Overrides the `_changeCartQuantity` function from `website_sale` to handle float quantities.
+- Uses `parseFloat` instead of `parseInt` for value conversion on the client-side.
+
+Usage
+-----
+
+- Users can add decimal quantities of products to the shopping cart from the online store.
+
+- Quantities are dynamically updated in the user interface after each quantity change.
+
+Development
+-----------
+
+The `website_sale_float_cart_qty` module uses JavaScript to extend the functionality of Odoo's `website_sale` module. The `website_sale_float_cart_qty.js` file overrides the `_changeCartQuantity` function to handle float quantities and perform server communication via RPC.
+
+Contributions
+-------------
+
+Contributions are welcome! If you want to contribute to the development of this module, feel free to submit a pull request or report issues on the official repository.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/avanzosc/odoo-addons/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
+------------
+* Ana Juaristi <[email protected]>
+* Unai Beristain <[email protected]>
+
+Do not contact contributors directly about support or help with technical issues.

website_sale_float_cart_qty/__init__.py

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+from . import models

website_sale_float_cart_qty/__manifest__.py

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+{
+    "name": "Website Sale Float Cart Quantity",
+    "summary": "Allow float quantities in cart for website sale module",
+    "version": "16.0.1.0.0",
+    "category": "Website",
+    "license": "LGPL-3",
+    "website": "https://github.com/OCA/e-commerce",
+    "author": "AvanzOSC",
+    "depends": [
+        "website_sale",
+    ],
+    "assets": {
+        "web.assets_frontend": [
+            "website_sale_float_cart_qty/static/src/js/float_qty.js",
+        ],
+    },
+    "installable": True,
+}

website_sale_float_cart_qty/models/__init__.py

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+from . import sale_order

website_sale_float_cart_qty/models/sale_order.py

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+from odoo import _, fields, models
+from odoo.exceptions import UserError
+
+
+class SaleOrderInherit(models.Model):
+    _inherit = "sale.order"
+
+    cart_quantity = fields.Float(
+        compute="_compute_cart_info",
+    )
+
+    def _cart_update(self, product_id, line_id=None, add_qty=0, set_qty=0, **kwargs):
+        if isinstance(add_qty, int) or isinstance(set_qty, int):
+            return super()._cart_update(product_id, line_id, add_qty, set_qty, **kwargs)
+        else:
+            # Add or set product quantity, add_qty can be negative
+            self.ensure_one()
+            self = self.with_company(self.company_id)
+
+            if self.state != "draft":
+                self.env["request"].session.pop("sale_order_id", None)
+                self.env["request"].session.pop("website_sale_cart_quantity", None)
+                raise UserError(
+                    _(
+                        "It is forbidden to modify a sales order which is not in draft status."
+                    )
+                )
+
+            product = self.env["product.product"].browse(product_id).exists()
+            if add_qty and (not product or not product._is_add_to_cart_allowed()):
+                raise UserError(
+                    _(
+                        "The given product does not exist therefore it cannot be added to cart."
+                    )
+                )
+
+            if line_id is not False:
+                order_line = self._cart_find_product_line(
+                    product_id, line_id, **kwargs
+                )[:1]
+            else:
+                order_line = self.env["sale.order.line"]
+
+            quantity = 0
+            if set_qty:
+                quantity = set_qty
+            elif add_qty:
+                if order_line:
+                    quantity = order_line.product_uom_qty + add_qty
+                else:
+                    quantity = add_qty
+
+            if quantity > 0:
+                quantity, warning = self._verify_updated_quantity(
+                    order_line,
+                    product_id,
+                    quantity,
+                    **kwargs,
+                )
+            else:
+                # If the line will be removed anyway, there is no need to verify
+                # the requested quantity update.
+                warning = ""
+
+            # Round it to avoid infinite 0 with a one after it
+            quantity = round(quantity, 9)
+
+            order_line = self._cart_update_order_line(
+                product_id, quantity, order_line, **kwargs
+            )
+
+            if (
+                order_line
+                and order_line.price_unit == 0
+                and self.website_id.prevent_zero_price_sale
+                and product.detailed_type
+                not in self.env[
+                    "product.template"
+                ]._get_product_types_allow_zero_price()
+            ):
+                raise UserError(
+                    _(
+                        """The given product does not have a price
+                        therefore it cannot be added to cart.""",
+                    )
+                )
+
+            return {
+                "line_id": order_line.id,
+                "quantity": quantity,
+                "option_ids": list(
+                    set(
+                        order_line.option_line_ids.filtered(
+                            lambda line: line.order_id == order_line.order_id
+                        ).ids
+                    )
+                ),
+                "warning": warning,
+            }
+
+    def _compute_cart_info(self):
+        all_sums_are_int = True
+        for order in self:
+            total_quantity = sum(order.mapped("website_order_line.product_uom_qty"))
+
+            if not isinstance(total_quantity, int):
+                all_sums_are_int = False
+
+            only_services = all(
+                line.product_id.type == "service" for line in order.website_order_line
+            )
+            order.only_services = only_services
+        if all_sums_are_int:
+            return super()._compute_cart_info()
+        else:
+            for order in self:
+                order.cart_quantity = sum(
+                    order.mapped("website_order_line.product_uom_qty")
+                )
+                order.only_services = all(
+                    line.product_id.type == "service"
+                    for line in order.website_order_line
+                )

website_sale_float_cart_qty/static/src/js/float_qty.js

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+odoo.define("website_sale_float_cart_qty.float_qty", function (require) {
+    "use strict";
+
+    var publicWidget = require("web.public.widget");
+    var wSaleUtils = require("website_sale.utils");
+    var core = require("web.core");
+    require("website_sale.website_sale");
+
+    publicWidget.registry.WebsiteSale.include({
+        /**
+         * Override the _changeCartQuantity method of WebsiteSale
+         * @param {jQuery} $input - The jQuery object representing the input field.
+         * @param {Number} value - The new value of the input field.
+         * @param {Array} $dom_optional - Array of DOM elements.
+         * @param {Number} line_id - The line ID associated with the cart line.
+         * @param {Array} productIDs - Array of product IDs.
+         */
+
+        _changeCartQuantity: function (
+            $input,
+            value,
+            $dom_optional,
+            line_id,
+            productIDs
+        ) {
+            _.each($dom_optional, function (elem) {
+                $(elem).find(".js_quantity").text(value);
+                productIDs.push(
+                    $(elem).find("span[data-product-id]").data("product-id")
+                );
+            });
+            $input.data("update_change", true);
+
+            $input.val($input.val().replace(",", "."));
+
+            this._rpc({
+                route: "/shop/cart/update_json",
+                params: {
+                    line_id: line_id,
+                    product_id: parseInt($input.data("product-id"), 10),
+                    set_qty: value,
+                },
+            }).then(function (data) {
+                $input.data("update_change", false);
+                var check_value = parseFloat($input.val() || 0, 10);
+                if (isNaN(check_value)) {
+                    check_value = 1;
+                }
+                if (value !== check_value) {
+                    $input.trigger("change");
+                    return;
+                }
+                sessionStorage.setItem(
+                    "website_sale_cart_quantity",
+                    data.cart_quantity
+                );
+                if (!data.cart_quantity) {
+                    return (window.location = "/shop/cart");
+                }
+                $input.val(data.quantity);
+                $(".js_quantity[data-line-id=" + line_id + "]")
+                    .val(data.quantity)
+                    .text(data.quantity);
+
+                wSaleUtils.updateCartNavBar(data);
+                wSaleUtils.showWarning(data.warning);
+                // Propagating the change to the express checkout forms
+                core.bus.trigger("cart_amount_changed", data.amount, data.minor_amount);
+            });
+        },
+
+        _onChangeCartQuantity: function (ev) {
+            var $input = $(ev.currentTarget);
+            if ($input.data("update_change")) {
+                return;
+            }
+            var value = $input.val().replace(",", ".");
+            value = parseFloat(value);
+            var $dom = $input.closest("tr");
+            var $dom_optional = $dom.nextUntil(":not(.optional_product.info)");
+            var line_id = parseInt($input.data("line-id"), 10);
+            var productIDs = [parseInt($input.data("product-id"), 10)];
+            this._changeCartQuantity($input, value, $dom_optional, line_id, productIDs);
+        },
+    });
+});

website_sale_float_cart_qty/tests/__init__.py

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+from . import test_cart_float_qty