stock_account_usability: add shortcut to stock.valuation.layer from product form view

stock_account_usability/__init__.py

@@ -0,0 +1 @@
+from . import models

stock_account_usability/__manifest__.py

@@ -22,6 +22,9 @@ This module has been written by Alexis de Lattre from Akretion <alexis.delattre@
     'author': 'Akretion',
     'website': 'http://www.akretion.com',
     'depends': ['stock_account', 'stock_usability'],
-    'data': ['views/stock_move.xml'],
+    'data': [
+        'views/stock_move.xml',
+        'views/product.xml',
+        ],
     'installable': True,
 }

stock_account_usability/models/__init__.py

@@ -0,0 +1 @@
+from . import product

stock_account_usability/models/product.py

@@ -0,0 +1,38 @@
+# Copyright 2022 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    def action_open_stock_valuation_layer(self):
+        self.ensure_one()
+        ppo = self.env['product.product']
+        if len(self.product_variant_ids) == 1:
+            action = ppo._get_stock_valuation_layer_action(self.product_variant_ids.id)
+        else:
+            action = ppo._get_stock_valuation_layer_action()
+            action["domain"] = [('product_id', 'in', self.product_variant_ids.ids)]
+        return action
+
+
+class ProductProduct(models.Model):
+    _inherit = 'product.product'
+
+    def action_open_stock_valuation_layer(self):
+        self.ensure_one()
+        return self._get_stock_valuation_layer_action(self.id)
+
+    @api.model
+    def _get_stock_valuation_layer_action(self, product_id=None):
+        action = self.env["ir.actions.actions"]._for_xml_id(
+            "stock_account.stock_valuation_layer_action")
+        if product_id:
+            action["context"] = {
+                'search_default_product_id': product_id,
+                'search_default_group_by_product_id': 1,
+                }
+        return action

stock_account_usability/views/product.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2022 Akretion France (http://www.akretion.com/)
+  @author: Alexis de Lattre <alexis.delattre@akretion.com>
+  License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+-->
+
+<odoo>
+
+        <!--
+<record id="product_product_to_inventory_valuation" model="ir.actions.act_window">
+    <field name="name">Inventory Valuation</field>
+    <field name="res_model">stock.valuation.layer</field>
+    <field name="view_mode">tree,form</field>
+    <field name="groups_id" eval="[(4, ref('stock.group_stock_manager'))]"/>
+    <field name="context">{'search_default_group_by_product_id': 1, 'search_default_product_id': active_id}</field>
+    <field name="binding_model_id" ref="product.model_product_product" />
+    <field name="binding_view_types">form</field>
+</record>
+
+        -->
+<!-- product template only form view -->
+<record id="product_template_form_view_procurement_button" model="ir.ui.view">
+    <field name="model">product.template</field>
+    <field name="inherit_id" ref="stock.product_template_form_view_procurement_button"/>
+    <field name="arch" type="xml">
+        <div name="button_box" position="inside">
+            <button class="oe_stat_button"
+                name="action_open_stock_valuation_layer"
+                string="Inventory Valuation"
+                icon="fa-usd"
+                type="object" attrs="{'invisible': [('type', '!=', 'product')]}">
+            </button>
+        </div>
+    </field>
+</record>
+
+<!-- product.product only form view -->
+<record id="product_form_view_procurement_button" model="ir.ui.view">
+    <field name="model">product.product</field>
+    <field name="inherit_id" ref="stock.product_form_view_procurement_button"/>
+    <field name="arch" type="xml">
+        <div name="button_box" position="inside">
+            <button class="oe_stat_button"
+                name="action_open_stock_valuation_layer"
+                string="Inventory Valuation"
+                icon="fa-usd"
+                type="object" attrs="{'invisible': [('type', '!=', 'product')]}">
+            </button>
+        </div>
+    </field>
+</record>
+
+</odoo>