[ADD] sale_pricelist_display_surcharge

sale_pricelist_display_surcharge/__init__.py

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+from . import models

sale_pricelist_display_surcharge/__manifest__.py

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+# Copyright 2023 ForgeFlow S.L.
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Sale Pricelist Display Surcharge",
+    "summary": """
+        This module shows to the customer the surcharges if wanted.""",
+    "version": "16.0.1.0.0",
+    "license": "AGPL-3",
+    "author": "ForgeFlow, Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/sale-workflow",
+    "depends": ["sale"],
+    "data": ["views/product_pricelist_item_views.xml"],
+}

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.order_id.pricelist_id.discount_policy == "without_discount"
+                )
+                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.order_id.pricelist_id.discount_policy == "without_discount"
+            and self.pricelist_item_id
+            and self.pricelist_item_id.show_surcharge
+        ):
+            return self._get_pricelist_price_before_discount()
+        return res

sale_pricelist_display_surcharge/readme/CONTRIBUTORS.rst

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+* David Jiménez <[email protected]>

sale_pricelist_display_surcharge/readme/DESCRIPTION.rst

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+In standard Odoo the discount is only displayed if it benefits the customer.
+In the case of wanting to always show the discount (for example a surcharge),
+this module allows to choose whether to show or not.

sale_pricelist_display_surcharge/readme/USAGE.rst

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+
+To use this module, you need to:
+
+#. Go on a pricelist
+#. Set a pricelist rule
+#. Check the "Show Surcharge" box, from now when using this rule the discount will be always displayed (if the pricelist is checked as show to customers).

sale_pricelist_display_surcharge/views/product_pricelist_item_views.xml

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+<odoo>
+    <record id="product_pricelist_item_form_view_surcharge" model="ir.ui.view">
+        <field name="name">product.pricelist.item.form - surcharge</field>
+        <field name="model">product.pricelist.item</field>
+        <field name="inherit_id" ref="product.product_pricelist_item_form_view" />
+        <field name="arch" type="xml">
+            <group name="pricelist_rule_limits" position="inside">
+                <field name="show_surcharge" />
+            </group>
+        </field>
+    </record>
+</odoo>

setup/sale_pricelist_display_surcharge/odoo/addons/sale_pricelist_display_surcharge

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+../../../../sale_pricelist_display_surcharge

setup/sale_pricelist_display_surcharge/setup.py

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