How Can I Add Website Decimal Quantity in Odoo - odoo-15

Question

I Have a custom module website_decimal_quantity. after installing this module, In the website shop cart, when the user clicks on the + or - button to adjust quantity, It should add or deduct .1 value from it. i find out that a function onclickaddcartjson in the sale.variantmixin is responsible for the button click.i tried to extend the onclickaddcartjson function that present in the website_sale.website_sale. but it does not work.
Thanks For the Attention
My code is like :
publicWidget.registry.WebsiteSale.include({
onClickAddCartJSON: function (ev) {
ev.preventDefault();
var $link = $(ev.currentTarget);
var $input = $link.closest('.input-group').find("input");
var min = parseFloat($input.data("min") || 0);
var max = parseFloat($input.data("max") || Infinity);
var previousQty = parseFloat($input.val() || 0, 10);
var quantity = ($link.has(".fa-minus").length ? -0.1 : 0.1) + previousQty;
var newQty = quantity > min ? (quantity < max ? quantity : max) : min;
if (newQty !== previousQty) {
$input.val(newQty).trigger('change');
}
return false;
},
_changeCartQuantity: function ($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'));
});
$input.data('update_change', true);
this._rpc({
route: "/shop/cart/update_json",
params: {
line_id: line_id,
product_id: parseInt($input.data('product-id'), 10),
set_qty: value
},
}).then(function (data) {
$input.data('update_change', false);
var check_value = parseFloat($input.val());
if (isNaN(check_value)) {
check_value = 1;
}
if (value !== check_value) {
$input.trigger('change');
return;
}
if (!data.cart_quantity) {
return window.location = '/shop/cart';
}
wSaleUtils.updateCartNavBar(data);
$input.val(data.quantity);
$('.js_quantity[data-line-id='+line_id+']').val(data.quantity).text(data.quantity);
if (data.warning) {
var cart_alert = $('.oe_cart').parent().find('#data_warning');
if (cart_alert.length === 0) {
$('.oe_cart').prepend('<div class="alert alert-danger alert-dismissable" role="alert" id="data_warning">'+
'<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button> ' + data.warning + '</div>');
}
else {
cart_alert.html('<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button> ' + data.warning);
}
$input.val(data.quantity);
}
});
},
_onChangeCartQuantity: function (ev) {
var $input = $(ev.currentTarget);
if ($input.data('update_change')) {
return;
}
var value = parseFloat($input.val());
if (isNaN(value)) {
value = 1;
}
var $dom = $input.closest('tr');
// var default_price = parseFloat($dom.find('.text-danger > span.oe_currency_value').text());
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, $dom_optional, line_id, productIDs);
},
})
The change that I made is in _onclickaddcartjson; change the line
var quantity = ($link.has(".fa-minus").length ? -0.1 : 0.1) + previousQty;
and in _changeCartQuantity, change the check_value into:
var check_value = parseFloat($input.val())
And in _onChangeCartQuantity, change the value into:
var value = parseFloat($input.val()).
Even if I made these changes in source file without my custom module, the quantity increase or decrease by .1. But it automatically turns into an integer value. That means when I click on the + button, the value changes to 1.1, but it immediately changes to 1. Also, if I click on the - button, it will changes to 2.9 from 3, then it changes to 2 as its value. If anybody has an idea about this please share. Thanks for the attention.

Answer 1

Yes, it 's possible as the type of the underlying field in model SaleOrderLine is Float. And in website_sale/models/sale_order.py : int(sum(order.mapped('website_order_line.product_uom_qty'))) needs to be reülaced by: sum(order.mapped('website_order_line.product_uom_qty')):
class SaleOrderLine(models.Model):
_name = 'sale.order.line'
product_uom_qty = fields.Float(string='Quantity', digits='Product Unit of Measure', required=True, default=1.0)
#api.depends('order_line.product_uom_qty', 'order_line.product_id')
def _compute_cart_info(self):
for order in self:
order.cart_quantity = sum(order.mapped('website_order_line.product_uom_qty'))
order.only_services = all(l.product_id.type in ('service', 'digital') for l in order.website_order_line)
The underlying python method to add quantity is located in addons module website_sale/models/sale_oder.py :
def _cart_update(self, product_id=None, line_id=None, add_qty=0, set_qty=0, **kwargs):
""" Add or set product quantity, add_qty can be negative """
self.ensure_one()
product_context = dict(self.env.context)
product_context.setdefault('lang', self.sudo().partner_id.lang)
SaleOrderLineSudo = self.env['sale.order.line'].sudo().with_context(product_context)
...
...which is called by 2 methods in website_sale/controllers/main.py :
#http.route(['/shop/cart/update'], type='http', auth="public", methods=['GET', 'POST'], website=True, csrf=False)
def cart_update(self, product_id, add_qty=1, set_qty=0, **kw):
AND
#http.route(['/shop/cart/update_json'], type='json', auth="public", methods=['POST'], website=True, csrf=False)
def cart_update_json(self, product_id, line_id=None, add_qty=None, set_qty=None, display=True):
"""This route is called when changing quantity from the cart or adding
a product from the wishlist."""
"""This route is called when adding a product to cart (no options)."""
This controller method cart_update_json is called in sale/.../js/variant_mixin.js by:
onClickAddCartJSON: function (ev) {
ev.preventDefault();
var $link = $(ev.currentTarget);
var $input = $link.closest('.input-group').find("input");
var min = parseFloat($input.data("min") || 0);
var max = parseFloat($input.data("max") || Infinity);
var previousQty = parseFloat($input.val() || 0, 10);
var quantity = ($link.has(".fa-minus").length ? -1 : 1) + previousQty;
var newQty = quantity > min ? (quantity < max ? quantity : max) : min;
if (newQty !== previousQty) {
$input.val(newQty).trigger('change');
}
return false;
},
...where: var quantity = ($link.has(".fa-minus").length ? -1 : 1) + previousQty; shows us that is incremented +1 oder -1
That s why you need to override this function in website_sale/.../website_sale.js to integrate:
var $parent = $(ev.target).closest('.js_product');
var product_id = this._getProductId($parent);
if product_id == yourspecificproductid
var quantity = ($link.has(".fa-minus").length ? -0.1 : 0.1) +
previousQty;
else
var quantity = ($link.has(".fa-minus").length ? -1 : 1) +
previousQty;
When quantity input value is changed automatically, it might be caused by parseInt($input.val()) in _onChangeCartQuantity in the file: website_sale.js:
_onChangeCartQuantity: function (ev) {
var $input = $(ev.currentTarget);
if ($input.data('update_change')) {
return;
}
var value = parseFloat($input.val() || 0, 10);
if (isNaN(value)) {
value = 1;
}
var $dom = $input.closest('tr');
// var default_price = parseFloat($dom.find('.text-danger > span.oe_currency_value').text());
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);
},