[19.0][ADD] commission_product_fixed

commission_product_fixed/README.rst

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+===============================
+Commission Product Fixed Amount
+===============================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:43387485aa173a6d5208903bd11e0b7ab0e2f10fee19839e85d107a11bbe546a
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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%2Fcommission-lightgray.png?logo=github
+    :target: https://github.com/OCA/commission/tree/18.0/commission_product_fixed
+    :alt: OCA/commission
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/commission-18-0/commission-18-0-commission_product_fixed
+    :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/commission&target_branch=18.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module adds a new commission type, **Fixed amount per product**, on
+top of the OCA commission framework.
+
+Instead of computing the commission as a percentage of the sale/invoice
+amount or the margin, the commission is a fixed amount defined per
+product. The amount is independent from the selling price.
+
+Because each agent is assigned its own commission, the same product can
+grant a different fixed amount depending on the agent: just define a
+separate commission per agent with its own per-product amounts.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+1. Go to *Invoicing > Configuration > Commissions > Commission types*.
+2. Create a commission and set its *Type* to *Fixed amount per product*.
+3. In the *Product amounts* table, add a line per product with the fixed
+   commission amount granted per unit. Optionally set:
+
+   -  a *Min. Quantity* to grant a different amount above a quantity
+      threshold (add several lines for the same product; the highest
+      applicable threshold wins);
+   -  a *Start Date* / *End Date* to limit the validity of the amount;
+   -  a *Currency* (the amount is converted to the invoice currency when
+      they differ).
+
+4. Assign this commission to an agent (*Contacts > the agent > Sales &
+   Purchase > Commission*). Use a different commission per agent to
+   grant different amounts for the same product.
+5. On a customer invoice, the agent is added to the lines and the
+   commission is computed as ``fixed amount x quantity``, using the line
+   matching the invoice date and quantity.
+
+If a product on a posted invoice line has no fixed amount defined in the
+agent's commission, posting the invoice is blocked until the amount is
+configured.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/commission/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/commission/issues/new?body=module:%20commission_product_fixed%0Aversion:%2018.0%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
+-------
+
+* Quartile
+
+Contributors
+------------
+
+-  Quartile (https://www.quartile.co)
+
+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/commission <https://github.com/OCA/commission/tree/18.0/commission_product_fixed>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

commission_product_fixed/__init__.py

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+from . import models

commission_product_fixed/__manifest__.py

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+# Copyright 2026 Quartile
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+{
+    "name": "Commission Product Fixed Amount",
+    "version": "19.0.1.0.0",
+    "author": "Quartile, Odoo Community Association (OCA)",
+    "category": "Sales Management",
+    "license": "AGPL-3",
+    "website": "https://github.com/OCA/commission",
+    "depends": [
+        "account_commission_oca",
+    ],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/commission_views.xml",
+    ],
+    "installable": True,
+}

commission_product_fixed/models/__init__.py

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+from . import commission
+from . import commission_line_mixin
+from . import account_move

commission_product_fixed/models/account_move.py

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+# Copyright 2026 Quartile
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class AccountInvoiceLineAgent(models.Model):
+    _inherit = "account.invoice.line.agent"
+
+    @api.depends("object_id.quantity", "invoice_date")
+    def _compute_amount(self):
+        # ``product_fixed`` amounts depend on the invoiced quantity and on the
+        # invoice date (for quantity tiers and validity windows), which are not
+        # part of the base dependencies. Add them so the commission amount is
+        # recomputed when they change.
+        return super()._compute_amount()
+
+
+class AccountMove(models.Model):
+    _inherit = "account.move"
+
+    def action_post(self):
+        self._check_product_fixed_commission()
+        return super().action_post()
+
+    def _check_product_fixed_commission(self):
+        """Block posting when a product/agent fixed commission is not defined.
+
+        For every commission of type ``product_fixed`` assigned on an invoice
+        line, the corresponding product must have an amount configured in the
+        commission. Otherwise the commission cannot be determined and the
+        invoice must not be posted.
+        """
+        missing = []
+        for move in self:
+            if move.move_type[:3] != "out":
+                continue
+            for line in move.invoice_line_ids:
+                if line.commission_free:
+                    continue
+                if not line.product_id:
+                    continue
+                for agent in line.agent_ids:
+                    commission = agent.commission_id
+                    if commission.commission_type != "product_fixed":
+                        continue
+                    # Use the same effective date as ``_get_commission_amount``
+                    # (the agent line's own ``invoice_date``) so the guard and
+                    # the amount computation never disagree on line validity.
+                    date = agent.invoice_date or fields.Date.context_today(agent)
+                    if commission._get_product_fixed_line(
+                        line.product_id, date, line.quantity
+                    ):
+                        continue
+                    missing.append(
+                        self.env._(
+                            "%(agent)s / %(product)s (commission: %(commission)s)",
+                            agent=agent.agent_id.display_name,
+                            product=line.product_id.display_name,
+                            commission=commission.display_name,
+                        )
+                    )
+        if missing:
+            raise ValidationError(
+                self.env._(
+                    "No fixed commission amount is defined for the following "
+                    "agent / product combinations:\n%s",
+                    "\n".join(f"- {m}" for m in missing),
+                )
+            )

commission_product_fixed/models/commission.py

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+# Copyright 2026 Quartile
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+from odoo.exceptions import ValidationError
+
+
+class Commission(models.Model):
+    _inherit = "commission"
+
+    commission_type = fields.Selection(
+        selection_add=[("product_fixed", "Fixed amount per product")],
+        ondelete={"product_fixed": "set default"},
+    )
+    product_line_ids = fields.One2many(
+        comodel_name="commission.product.line",
+        inverse_name="commission_id",
+        string="Product amounts",
+        copy=True,
+    )
+
+    def _get_product_fixed_line(self, product, date=None, quantity=0.0):
+        """Return the applicable product amount line (or empty).
+
+        Lines are filtered by product, validity dates and minimum quantity.
+        The most specific match (highest applicable ``min_qty``) is selected
+        explicitly, so the result does not depend on the recordset order.
+        """
+        self.ensure_one()
+        lines = self.product_line_ids.filtered(
+            lambda x: x.product_id == product and x.min_qty <= quantity
+        )
+        if date:
+            lines = lines.filtered(
+                lambda x: (not x.date_start or x.date_start <= date)
+                and (not x.date_end or x.date_end >= date)
+            )
+        return lines.sorted(key=lambda x: x.min_qty, reverse=True)[:1]
+
+
+class CommissionProductLine(models.Model):
+    _name = "commission.product.line"
+    _description = "Fixed commission amount per product"
+    _order = "sequence, min_qty desc, id"
+    _rec_name = "product_id"
+
+    sequence = fields.Integer(default=10)
+    commission_id = fields.Many2one(
+        comodel_name="commission",
+        required=True,
+        ondelete="cascade",
+    )
+    product_id = fields.Many2one(
+        comodel_name="product.product",
+        string="Product",
+        required=True,
+    )
+    min_qty = fields.Float(
+        string="Min. Quantity",
+        default=0.0,
+        help="The minimum invoiced quantity for this amount to apply. When "
+        "several lines match a product, the one with the highest applicable "
+        "minimum quantity is used.",
+    )
+    amount = fields.Monetary(
+        string="Commission Amount",
+        required=True,
+        help="Fixed commission amount granted per unit of the product.",
+    )
+    currency_id = fields.Many2one(
+        comodel_name="res.currency",
+        default=lambda self: self.env.company.currency_id,
+        required=True,
+    )
+    date_start = fields.Date(
+        string="Start Date",
+        help="Start date for this amount (inclusive).",
+    )
+    date_end = fields.Date(
+        string="End Date",
+        help="End date for this amount (inclusive).",
+    )
+
+    @api.constrains("date_start", "date_end")
+    def _check_dates(self):
+        for line in self:
+            if not line.date_start or not line.date_end:
+                continue
+            if line.date_start <= line.date_end:
+                continue
+            raise ValidationError(
+                self.env._("The start date cannot be after the end date.")
+            )

commission_product_fixed/models/commission_line_mixin.py

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+# Copyright 2026 Quartile
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class CommissionLineMixin(models.AbstractModel):
+    _inherit = "commission.line.mixin"
+
+    def _get_commission_amount(self, commission, subtotal, product, quantity):
+        """Compute the commission as a fixed amount per product unit.
+
+        The sale price, discount and margin are not taken into account: the
+        amount is the per-product fixed value (which differs by agent, as each
+        agent points to its own commission) multiplied by the quantity.
+        """
+        self.ensure_one()
+        if commission and commission.commission_type == "product_fixed":
+            if product.commission_free:
+                return 0.0
+            date = getattr(self, "invoice_date", False) or (
+                fields.Date.context_today(self)
+            )
+            line = commission._get_product_fixed_line(product, date, quantity)
+            if not line:
+                # Missing configuration. The amount is left at 0 here and the
+                # posting of the invoice is blocked in account.move to force a
+                # proper setup (see _check_product_fixed_commission).
+                return 0.0
+            amount = line.amount * quantity
+            if (
+                line.currency_id
+                and self.currency_id
+                and (line.currency_id != self.currency_id)
+            ):
+                company = getattr(self, "company_id", False) or self.env.company
+                amount = line.currency_id._convert(
+                    amount, self.currency_id, company, date
+                )
+            return amount
+        return super()._get_commission_amount(commission, subtotal, product, quantity)

commission_product_fixed/pyproject.toml

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+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"

commission_product_fixed/readme/CONTRIBUTORS.md

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+- Quartile (<https://www.quartile.co>)
+  - Tatsuki Kanda

commission_product_fixed/readme/DESCRIPTION.md

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+This module adds a new commission type, **Fixed amount per product**, on top
+of the OCA commission framework.
+
+Instead of computing the commission as a percentage of the sale/invoice amount
+or the margin, the commission is a fixed amount defined per product. The amount
+is independent from the selling price.
+
+Because each agent is assigned its own commission, the same product can grant a
+different fixed amount depending on the agent: just define a separate commission
+per agent with its own per-product amounts.

commission_product_fixed/readme/USAGE.md

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+1.  Go to *Invoicing > Configuration > Commissions > Commission types*.
+2.  Create a commission and set its *Type* to *Fixed amount per product*.
+3.  In the *Product amounts* table, add a line per product with the fixed
+    commission amount granted per unit. Optionally set:
+    - a *Min. Quantity* to grant a different amount above a quantity threshold
+      (add several lines for the same product; the highest applicable
+      threshold wins);
+    - a *Start Date* / *End Date* to limit the validity of the amount;
+    - a *Currency* (the amount is converted to the invoice currency when they
+      differ).
+4.  Assign this commission to an agent (*Contacts > the agent > Sales &
+    Purchase > Commission*). Use a different commission per agent to grant
+    different amounts for the same product.
+5.  On a customer invoice, the agent is added to the lines and the commission
+    is computed as `fixed amount x quantity`, using the line matching the
+    invoice date and quantity.
+
+If a product on a posted invoice line has no fixed amount defined in the
+agent's commission, posting the invoice is blocked until the amount is
+configured.

commission_product_fixed/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_commission_product_line_manager,access_commission_product_line_manager,model_commission_product_line,commission_oca.group_commission_manager,1,1,1,1
+access_commission_product_line_user,access_commission_product_line_user,model_commission_product_line,commission_oca.group_commission_user,1,0,0,0