product_category_tax, configura impuestos por cada categoría de producto.

product_category_tax/__init__.py

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

product_category_tax/__manifest__.py

@@ -0,0 +1,20 @@
+# Copyright 2021 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    'name': 'Product Category Tax',
+    'version': '12.0.1.0.0',
+    'author': "Criptomart",
+    'website': 'https://github.com/criptomart/obook',
+    'license': 'AGPL-3',
+    'category': 'Product',
+    'depends': [
+        'product',
+        'account'
+    ],
+    'data': [
+        'views/product_category.xml',
+        'views/res_config_settings_views.xml',
+    ],
+    'installable': True,
+}

product_category_tax/models/__init__.py

@@ -0,0 +1,4 @@
+from . import res_company
+from . import res_config_settings
+from . import product_product
+from . import product_category

product_category_tax/models/product_category.py

@@ -0,0 +1,19 @@
+# Copyright 2018 Eficent Business and IT Consulting Services S.L.
+#   (http://www.eficent.com)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class ProductCategory(models.Model):
+    _inherit = 'product.category'
+
+    sell_tax_id = fields.Many2one(
+        comodel_name="account.tax", string="Impuesto de venta del producto",
+        help="Configura los productos de ésta categoría al impuesto definido aquí.",
+    )
+
+    buy_tax_id = fields.Many2one(
+        comodel_name="account.tax", string="Impuesto de compra del producto",
+        help="Configura los productos de ésta categoría al impuesto definido aquí.",
+    )

product_category_tax/models/product_product.py

@@ -0,0 +1,29 @@
+# Copyright 2021 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+import logging
+
+from odoo import _, api, fields, models
+
+_logger = logging.getLogger(__name__)
+
+class ProductProduct(models.Model):
+    _inherit = 'product.product'
+
+
+    @api.model
+    def create(self, vals):
+        category = self.env['product.category']
+        categ_id = vals.get("categ_id")
+        template_id = vals.get("product_tmpl_id")
+        if categ_id:
+            category = category.browse(categ_id)
+            vals['taxes_id'] = category.sell_tax_id
+            vals['supplier_taxes_id'] = category.buy_tax_id
+        elif template_id:
+            template = self.env["product.template"].browse(template_id)
+            category = template.categ_id
+            template.taxes_id = category.sell_tax_id
+            template.supplier_taxes_id = category.buy_tax_id
+
+        return super(ProductProduct, self).create(vals)

product_category_tax/models/res_company.py

@@ -0,0 +1,13 @@
+# Copyright 2021 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class Company(models.Model):
+    _inherit = 'res.company'
+
+    use_parent_categories_to_determine_taxes = fields.Boolean(
+        string="Use parent categories to determine the taxes",
+        help="Use parent categories to determine the taxes if the category has no settings for the taxes.",
+    )

product_category_tax/models/res_config_settings.py

@@ -0,0 +1,13 @@
+# Copyright 2021 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    use_parent_categories_to_determine_taxes = fields.Boolean(
+        related="company_id.use_parent_categories_to_determine_taxes",
+        readonly=False,
+    )

product_category_tax/views/product_category.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<odoo>
+
+    <record id="product_category_form_view" model="ir.ui.view">
+        <field name="name">product.category.form - product_category_tax</field>
+        <field name="model">product.category</field>
+        <field name="inherit_id" ref="product.product_category_form_view"/>
+        <field name="arch" type="xml">
+            <field name="parent_id" position="after">
+                <field name="sell_tax_id" class="oe_inline" widget="selection" domain="[('type_tax_use', '=', 'sale')]" />
+                <field name="buy_tax_id" class="oe_inline" widget="selection" domain="[('type_tax_use', '=', 'purchase')]" />
+            </field>
+        </field>
+    </record>
+
+</odoo>

product_category_tax/views/res_config_settings_views.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2018 Eficent Business and IT Consulting Services S.L.
+     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
+<odoo>
+    <record id="res_config_settings_view_form" model="ir.ui.view">
+        <field name="name">res.config.settings.view.form.inherit.product</field>
+        <field name="model">res.config.settings</field>
+        <field name="inherit_id" ref="product.res_config_settings_view_form" />
+        <field name="arch" type="xml">
+            <div id="product_general_settings" position="inside">
+                <div class="col-12 col-lg-6 o_setting_box">
+                    <div class="o_setting_left_pane">
+                        <field name="use_parent_categories_to_determine_taxes" />
+                    </div>
+                    <div class="o_setting_right_pane">
+                        <label for="use_parent_categories_to_determine_taxes"
+                               string="Use parent categories to determine the taxes" />
+                        <div class="text-muted">
+                            Use parent categories to determine the taxes if the category
+                            has no settings for the prefix.
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </field>
+    </record>
+</odoo>