[ADD] purchase_invoice_currency_custom_rate

Allows you to send rate values from a purchase when the invoice is issued in a currency other than the primary currency.

Author: ChristianSantamaria

purchase_invoice_currency_custom_rate/README.rst

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+=======================================
+Purchase Invoice - Currency Custom Rate
+=======================================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:6a578291debf966adc8b6cbf64ed683a996cbae61c2a77724a39ab81cafb9115
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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-LGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/lgpl-3.0-standalone.html
+    :alt: License: LGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-solvosci%2Fslv--purchase-lightgray.png?logo=github
+    :target: https://github.com/solvosci/slv-purchase/tree/13.0/purchase_invoice_currency_custom_rate
+    :alt: solvosci/slv-purchase
+
+|badge1| |badge2| |badge3|
+
+Allows you to send rate values from a purchase when the invoice is issued in a currency other than the primary currency.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/solvosci/slv-purchase/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/solvosci/slv-purchase/issues/new?body=module:%20purchase_invoice_currency_custom_rate%0Aversion:%2013.0%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
+~~~~~~~
+
+* Solvos
+
+Contributors
+~~~~~~~~~~~~
+
+* Christian Santamaría <christian.santamaria@solvos.es>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is part of the `solvosci/slv-purchase <https://github.com/solvosci/slv-purchase/tree/13.0/purchase_invoice_currency_custom_rate>`_ project on GitHub.
+
+You are welcome to contribute.

purchase_invoice_currency_custom_rate/__init__.py

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+from . import models

purchase_invoice_currency_custom_rate/__manifest__.py

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+# © 2025 Solvos Consultoría Informática (<http://www.solvos.es>)
+# License LGPL-3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)
+{
+    "name": "Purchase Invoice - Currency Custom Rate",
+    "summary": """
+        Allows you to send rate values from a purchase when the invoice is issued in a currency other than the primary currency.
+    """,
+    "version": "13.0.1.0.0",
+    "category": "Accounting & Finance",
+    "website": "https://github.com/solvosci/slv-account",
+    "author": "Solvos",
+    "license": "LGPL-3",
+    "depends": [
+        "purchase",
+        "account_invoice_currency_custom_rate",
+    ],
+    "data": ["views/purchase_order_views.xml"],
+    "installable": True,
+}

purchase_invoice_currency_custom_rate/models/__init__.py

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+from . import purchase_order

purchase_invoice_currency_custom_rate/models/purchase_order.py

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+# © 2025 Solvos Consultoría Informática (<http://www.solvos.es>)
+# License LGPL-3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)
+
+from odoo import api, models, fields
+
+
+class PurchaseOrder(models.Model):
+    _inherit = "purchase.order"
+
+    custom_rate = fields.Float(
+        digits=(12, 6),
+        default=1,
+        help="Set new currency rate to apply on the invoice.\n"
+        "This rate will be taken in order to convert amounts between the "
+        "currency on the invoice and last currency",
+    )
+    is_custom_rate = fields.Boolean()
+
+    custom_rate_enabled_visible = fields.Boolean(
+        string="Is 'Apply Custom Currency Rate' visible",
+        compute="_compute_custom_rate_enabled_visible",
+    )
+
+    @api.depends("state", "currency_id", "company_id")
+    def _compute_custom_rate_enabled_visible(self):
+        order_custom_rate_visible = self.browse([])
+        if self.env.user.has_group(
+            "account.group_account_manager"
+        ):
+            order_custom_rate_visible = self.filtered(
+                lambda x: (
+                    x.state not in ["draft", "done"]
+                    and x.currency_id != x.company_id.currency_id
+                )
+            )
+        if order_custom_rate_visible:
+            order_custom_rate_visible.custom_rate_enabled_visible = True
+        (self - order_custom_rate_visible).custom_rate_enabled_visible = False
+
+
+    def _prepare_invoice(self):
+        res = super()._prepare_invoice()
+        if self.is_custom_rate:
+            res.update({
+                "custom_rate": self.custom_rate,
+                "is_custom_rate": self.is_custom_rate,
+            })
+        return res

purchase_invoice_currency_custom_rate/readme/CONTRIBUTORS.rst

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+* Christian Santamaría <christian.santamaria@solvos.es>

purchase_invoice_currency_custom_rate/readme/DESCRIPTION.rst

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+Allows you to send rate values from a purchase when the invoice is issued in a currency other than the primary currency.