Initial commit: Odoo 18.0-20251222 extra-addons

sale_pricelist_display_surcharge/models/__init__.py

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+from . import sale_order_line
+from . import product_pricelist_item

sale_pricelist_display_surcharge/models/product_pricelist_item.py

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+# Copyright 2023 ForgeFlow S.L.
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class PricelistItem(models.Model):
+    _inherit = "product.pricelist.item"
+
+    show_surcharge = fields.Boolean(
+        default=False,
+        help="If enabled, when the price is computed "
+        "will show the customer the surcharge.",
+    )

sale_pricelist_display_surcharge/models/sale_order_line.py

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+# Copyright 2023 ForgeFlow S.L.
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class SaleOrderLine(models.Model):
+    _inherit = "sale.order.line"
+
+    @api.depends("product_id", "product_uom", "product_uom_qty")
+    def _compute_discount(self):
+        res = super()._compute_discount()
+        for line in self:
+            if (
+                not line.discount
+                and line.order_id.pricelist_id
+                and line.pricelist_item_id
+                and line.pricelist_item_id.show_surcharge
+            ):
+                pricelist_price = line._get_pricelist_price()
+                base_price = line._get_pricelist_price_before_discount()
+
+                if base_price != 0:  # Avoid division by zero
+                    line.discount = (base_price - pricelist_price) / base_price * 100
+        return res
+
+    def _get_display_price(self):
+        res = super()._get_display_price()
+        if self.pricelist_item_id and self.pricelist_item_id.show_surcharge:
+            return self._get_pricelist_price_before_discount()
+        return res