[IMP] account_invoice_show_currency_rate: add option to choose currency rate display format

This commit adds an option to display the exchange rate either as company currency per foreign currency or as foreign currency per company currency.

Example (company currency: JPY; 1 USD = 150 JPY):

- (Default) Foreign currency per company currency → 0.0067 (USD/JPY)
- Company currency per foreign currency → 150 (JPY/USD)

Author: AungKoKoLin1997

account_invoice_show_currency_rate/README.rst

@@ -53,6 +53,13 @@ Some rates must be defined (and be distinct to 1.0) for currencies different fro
 #. Go to Rates smart-button
 #. Update 01/01/2010 record and change rate to 1.5
 
+To change the currency rate display style on invoices:
+
+- Go to Accounting (or Invoicing) → Configuration → Settings.
+- In the Currency Rate Display section, select the default display style for all invoices:
+  - Foreign Currency per Company Currency Rate (default): Displays the foreign currency per 1 unit of the company currency.
+  - Company Currency per Foreign Currency Rate: Displays the company currency per 1 unit of the foreign currency.
+
 Usage
 =====
 

account_invoice_show_currency_rate/__manifest__.py

@@ -11,5 +11,8 @@
     "installable": True,
     "depends": ["account"],
     "maintainers": ["victoralmau"],
-    "data": ["views/account_move_view.xml"],
+    "data": [
+        "views/account_move_view.xml",
+        "views/res_config_settings_views.xml",
+    ],
 }

account_invoice_show_currency_rate/models/__init__.py

@@ -1 +1,3 @@
 from . import account_move
+from . import res_company
+from . import res_config_settings

account_invoice_show_currency_rate/models/account_move.py

@@ -12,6 +12,12 @@ class AccountMove(models.Model):
         compute="_compute_currency_rate_amount",
         digits=0,
     )
+    company_currency_rate_amount = fields.Float(
+        string="Rate Amount",
+        compute="_compute_currency_rate_amount",
+        digits=0,
+    )
+    currency_rate_display = fields.Selection(related="company_id.currency_rate_display")
     show_currency_rate_amount = fields.Boolean(
         compute="_compute_show_currency_rate_amount", readonly=True
     )
@@ -32,6 +38,7 @@ def _compute_currency_rate_amount(self):
         - Case C: Get expected rate (according to date) to show some value in creation.
         """
         self.currency_rate_amount = 1
+        self.company_currency_rate_amount = 1
         for item in self.filtered("show_currency_rate_amount"):
             lines = item.line_ids.filtered(lambda x: abs(x.amount_currency) > 0)
             if item.state == "posted" and lines:
@@ -42,9 +49,15 @@ def _compute_currency_rate_amount(self):
                 item.currency_rate_amount = (
                     amount_currency_positive / total_balance_positive
                 )
+                item.company_currency_rate_amount = (
+                    total_balance_positive / amount_currency_positive
+                )
             else:
                 rates = item.currency_id._get_rates(item.company_id, item.date)
                 item.currency_rate_amount = rates.get(item.currency_id.id)
+                item.company_currency_rate_amount = item.currency_id._convert(
+                    1.0, item.company_id.currency_id, item.company_id, item.date
+                )
 
     @api.depends("currency_id", "currency_id.rate_ids", "company_id")
     def _compute_show_currency_rate_amount(self):
@@ -57,6 +70,41 @@ def _compute_show_currency_rate_amount(self):
 class AccountMoveLine(models.Model):
     _inherit = "account.move.line"
 
+    company_currency_rate_amount = fields.Float(
+        string="Rate Amount",
+        compute="_compute_company_currency_rate_amount",
+        digits=0,
+    )
+    currency_rate_display = fields.Selection(related="company_id.currency_rate_display")
+
+    @api.depends(
+        "currency_id",
+        "move_id.company_id",
+        "move_id.date",
+        "move_id.state",
+        "amount_currency",
+        "balance",
+    )
+    def _compute_company_currency_rate_amount(self):
+        for line in self:
+            line.currency_rate = 1
+            if line.currency_id:
+                if line.move_id.state != "posted" or not line.amount_currency:
+                    line.company_currency_rate_amount = line.currency_id._convert(
+                        1.0,
+                        line.company_id.currency_id,
+                        line.company_id,
+                        date=line.move_id.invoice_date
+                        or line.move_id.date
+                        or fields.Date.context_today(line),
+                    )
+                else:
+                    line.company_currency_rate_amount = (
+                        abs(line.balance) / abs(line.amount_currency)
+                        if line.amount_currency
+                        else 0
+                    )
+
     @api.depends(
         "currency_id",
         "move_id.company_id",

account_invoice_show_currency_rate/models/res_company.py

@@ -0,0 +1,22 @@
+# Copyright 2025 Quartile (https://www.quartile.co)
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ResCompany(models.Model):
+    _inherit = "res.company"
+
+    currency_rate_display = fields.Selection(
+        [
+            ("foreign_per_company", "Foreign Currency per Company Currency Rate"),
+            ("company_per_foreign", "Company Currency per Foreign Currency Rate"),
+        ],
+        default="foreign_per_company",
+        help=(
+            "Select how to display the exchange rate. Example (company currency: JPY; "
+            "1 USD = 150 JPY):\n"
+            "- Foreign currency per company currency → 0.0067 (USD/JPY)\n"
+            "- Company currency per foreign currency → 150 (JPY/USD)"
+        ),
+    )

account_invoice_show_currency_rate/models/res_config_settings.py

@@ -0,0 +1,13 @@
+# Copyright 2025 Quartile (https://www.quartile.co)
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = "res.config.settings"
+
+    currency_rate_display = fields.Selection(
+        related="company_id.currency_rate_display",
+        readonly=False,
+    )

account_invoice_show_currency_rate/readme/CONFIGURE.rst

@@ -12,3 +12,10 @@ Some rates must be defined (and be distinct to 1.0) for currencies different fro
 #. Go to Invoicing > Configuration > Currencies and go to EUR
 #. Go to Rates smart-button
 #. Update 01/01/2010 record and change rate to 1.5
+
+To change the currency rate display style on invoices:
+
+- Go to Accounting (or Invoicing) → Configuration → Settings.
+- In the Currency Rate Display section, select the default display style for all invoices:
+  - Foreign Currency per Company Currency Rate (default): Displays the foreign currency per 1 unit of the company currency.
+  - Company Currency per Foreign Currency Rate: Displays the company currency per 1 unit of the foreign currency.

account_invoice_show_currency_rate/static/description/index.html

@@ -8,11 +8,10 @@
 
 /*
 :Author: David Goodger ([email protected])
-:Id: $Id: html4css1.css 9511 2024-01-13 09:50:07Z milde $
+:Id: $Id: html4css1.css 8954 2022-01-20 10:10:25Z milde $
 :Copyright: This stylesheet has been placed in the public domain.
 
 Default cascading style sheet for the HTML output of Docutils.
-Despite the name, some widely supported CSS2 features are used.
 
 See https://docutils.sourceforge.io/docs/howto/html-stylesheets.html for how to
 customize this style sheet.
@@ -275,7 +274,7 @@
   margin-left: 2em ;
   margin-right: 2em }
 
-pre.code .ln { color: gray; } /* line numbers */
+pre.code .ln { color: grey; } /* line numbers */
 pre.code, code { background-color: #eeeeee }
 pre.code .comment, code .comment { color: #5C6576 }
 pre.code .keyword, code .keyword { color: #3B0D06; font-weight: bold }
@@ -301,7 +300,7 @@
 span.pre {
   white-space: pre }
 
-span.problematic, pre.problematic {
+span.problematic {
   color: red }
 
 span.section-subtitle {
@@ -402,6 +401,13 @@ <h1><a class="toc-backref" href="#toc-entry-1">Configuration</a></h1>
 <li>Go to Rates smart-button</li>
 <li>Update 01/01/2010 record and change rate to 1.5</li>
 </ol>
+<p>To change the currency rate display style on invoices:</p>
+<ul class="simple">
+<li>Go to Accounting (or Invoicing) → Configuration → Settings.</li>
+<li>In the Currency Rate Display section, select the default display style for all invoices:
+- Foreign Currency per Company Currency Rate (default): Displays the foreign currency per 1 unit of the company currency.
+- Company Currency per Foreign Currency Rate: Displays the company currency per 1 unit of the foreign currency.</li>
+</ul>
 </div>
 <div class="section" id="usage">
 <h1><a class="toc-backref" href="#toc-entry-2">Usage</a></h1>
@@ -441,9 +447,7 @@ <h2><a class="toc-backref" href="#toc-entry-6">Contributors</a></h2>
 <div class="section" id="maintainers">
 <h2><a class="toc-backref" href="#toc-entry-7">Maintainers</a></h2>
 <p>This module is maintained by the OCA.</p>
-<a class="reference external image-reference" href="https://odoo-community.org">
-<img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" />
-</a>
+<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
 <p>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.</p>

account_invoice_show_currency_rate/tests/test_account_move.py

@@ -77,18 +77,28 @@ def test_01_invoice_currency(self):
         invoice = self._create_invoice(self.currency)
         self.assertAlmostEqual(invoice.currency_rate_amount, 1.0, 2)
         self.assertAlmostEqual(invoice.line_ids[0].currency_rate, 1.0, 2)
+        self.assertAlmostEqual(invoice.company_currency_rate_amount, 1.0, 2)
+        self.assertAlmostEqual(invoice.line_ids[0].company_currency_rate_amount, 1.0, 2)
 
     def test_02_invoice_currency_extra(self):
         self.partner.property_product_pricelist = self.pricelist_currency_extra
         invoice = self._create_invoice(self.currency_extra)
         self.assertAlmostEqual(invoice.currency_rate_amount, 2.0, 2)
         self.assertAlmostEqual(invoice.line_ids[0].currency_rate, 2.0, 2)
+        self.assertAlmostEqual(invoice.company_currency_rate_amount, 0.5, 2)
+        self.assertAlmostEqual(invoice.line_ids[0].company_currency_rate_amount, 0.5, 2)
         rate_custom = self.currency_extra.rate_ids.filtered(
             lambda x: x.name == fields.Date.from_string("2000-01-01")
         )
         rate_custom.rate = 3.0
         self.assertAlmostEqual(invoice.currency_rate_amount, 2.0, 2)
         self.assertAlmostEqual(invoice.line_ids[0].currency_rate, 2.0, 2)
+        self.assertAlmostEqual(invoice.company_currency_rate_amount, 0.5, 2)
+        self.assertAlmostEqual(invoice.line_ids[0].company_currency_rate_amount, 0.5, 2)
         invoice.button_draft()
         self.assertAlmostEqual(invoice.currency_rate_amount, 3.0, 2)
         self.assertAlmostEqual(invoice.line_ids[0].currency_rate, 3.0, 2)
+        self.assertAlmostEqual(invoice.company_currency_rate_amount, 0.33, 2)
+        self.assertAlmostEqual(
+            invoice.line_ids[0].company_currency_rate_amount, 0.33, 2
+        )

account_invoice_show_currency_rate/views/account_move_view.xml

@@ -10,11 +10,18 @@ License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).
         <field name="arch" type="xml">
             <xpath expr="//div[@name='journal_div']" position="after">
                 <field name="show_currency_rate_amount" invisible="1" />
+                <field name="currency_rate_display" invisible="1" />
                 <field
                     name="currency_rate_amount"
                     groups="base.group_multi_currency"
                     digits="[12,12]"
-                    attrs="{'invisible':[('show_currency_rate_amount', '=', False)]}"
+                    attrs="{'invisible':['|', ('show_currency_rate_amount', '=', False), ('currency_rate_display', '=', 'company_per_foreign')]}"
+                />
+                <field
+                    name="company_currency_rate_amount"
+                    groups="base.group_multi_currency"
+                    digits="[12,12]"
+                    attrs="{'invisible':['|', ('show_currency_rate_amount', '=', False), ('currency_rate_display', '=', 'foreign_per_company')]}"
                 />
             </xpath>
             <xpath
@@ -28,6 +35,13 @@ License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).
                     groups="base.group_multi_currency"
                     optional="hide"
                 />
+                <field
+                    name="company_currency_rate_amount"
+                    string="Rate"
+                    digits="[12,12]"
+                    groups="base.group_multi_currency"
+                    optional="hide"
+                />
             </xpath>
         </field>
     </record>