[ADD] sale_pricelist_sale_margin module

sale_pricelist_margin/README.rst

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+==========================
+Sale Pricelist Sale Margin
+==========================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fsale--workflow-lightgray.png?logo=github
+    :target: https://github.com/OCA/sale-workflow/tree/16.0/sale_pricelist_margin
+    :alt: OCA/sale-workflow
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/sale-workflow-16-0/sale-workflow-16-0-sale_pricelist_margin
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/sale-workflow&target_branch=16.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module allows to set a sale margin on the pricelist. 
+The margin is calculated as a percentage of the cost price, list price or other price list.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/sale-workflow/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/sale-workflow/issues/new?body=module:%20sale_pricelist_margin%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Sidoo
+
+Contributors
+~~~~~~~~~~~~
+
+* Julien Coux <julien.coux@camptocamp.com>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+This module is part of the `OCA/sale-workflow <https://github.com/OCA/sale-workflow/tree/16.0/sale_pricelist_margin>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

sale_pricelist_margin/__init__.py

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+from . import models

sale_pricelist_margin/__manifest__.py

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+{
+    "name": "Sale Pricelist Sale Margin",
+    "summary": "Use sale margin for pricelist items",
+    "version": "16.0.1.0.0",
+    "category": "Sales",
+    "website": "https://github.com/OCA/sale-workflow",
+    "author": "Sidoo, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "depends": ["product"],
+    "data": [
+        "views/product_pricelist_item_views.xml",
+    ],
+    "installable": True,
+}

sale_pricelist_margin/models/__init__.py

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+from . import product_pricelist_item

sale_pricelist_margin/models/product_pricelist_item.py

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+from odoo import api, fields, models
+
+
+class ProductPricelistItem(models.Model):
+    _inherit = "product.pricelist.item"
+
+    discount_type = fields.Selection(
+        [("discount", "Discount"), ("sale_margin", "Sale Margin")],
+        default="discount",
+    )
+    price_discount = fields.Float(
+        readonly=False,
+        compute="_compute_price_discount",
+    )
+    sale_margin = fields.Float(
+        help="The margin percentage for sale price.",
+    )
+
+    @api.depends("sale_margin")
+    def _compute_price_discount(self):
+        for record in self:
+            record.price_discount = (
+                -1 * ((1 / (1 - (record.sale_margin / 100))) - 1) * 100
+            )

sale_pricelist_margin/readme/CONTRIBUTORS.rst

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+* Julien Coux <julien.coux@camptocamp.com>

sale_pricelist_margin/readme/DESCRIPTION.rst

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+This module allows to set a sale margin on the pricelist. 
+The margin is calculated as a percentage of the cost price, list price or other price list.