Add tax class on account categories

locale/ca.po

@@ -2,6 +2,10 @@
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
+msgctxt "field:product.category,woocommerce_tax_class:"
+msgid "WooCommerce Tax Class"
+msgstr "Classe Impost WooCommerce"
+
 msgctxt "field:web.shop,price_list:"
 msgid "Price List"
 msgstr "Tarifa"

locale/es.po

@@ -2,6 +2,10 @@
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
+msgctxt "field:product.category,woocommerce_tax_class:"
+msgid "WooCommerce Tax Class"
+msgstr "Classe Impuesto WooCommerce"
+
 msgctxt "field:web.shop,price_list:"
 msgid "Price List"
 msgstr "Tarifa"

product.py

@@ -1,6 +1,8 @@
 # The COPYRIGHT file at the top level of this repository contains the full
 # copyright notices and license terms.
+from trytond.model import fields
 from trytond.pool import PoolMeta
+from trytond.pyson import Eval
 from trytond.tools import slugify
 
 from .web import ShopWooCommerceIdMixin
@@ -9,6 +11,12 @@ from .web import ShopWooCommerceIdMixin
 class Category(ShopWooCommerceIdMixin, metaclass=PoolMeta):
     __name__ = 'product.category'
 
+    woocommerce_tax_class = fields.Char("WooCommerce Tax Class",
+        states={
+            'invisible': ~Eval('accounting', False),
+            },
+        depends=['accounting'])
+
     def get_woocommerce_entity(self):
         values = {
             'name': self.name,
@@ -26,6 +34,16 @@ class Category(ShopWooCommerceIdMixin, metaclass=PoolMeta):
 class Product(ShopWooCommerceIdMixin, metaclass=PoolMeta):
     __name__ = 'product.product'
 
+    @property
+    def woocommerce_tax_class(self):
+        if self.account_category:
+            parent = self.account_category
+            while parent:
+                if parent.woocommerce_tax_class:
+                    return parent.woocommerce_tax_class
+                parent = parent.parent
+            return ''
+
     def get_woocommerce_entity(self):
         short_description = description = (self.description or '')
         lines = description.splitlines()
@@ -56,4 +74,7 @@ class Product(ShopWooCommerceIdMixin, metaclass=PoolMeta):
             if category.woocommerce_id:
                 categories.append({'id': category.woocommerce_id})
         values['categories'] = categories
+        tax_class = self.woocommerce_tax_class
+        if tax_class is not None:
+            values['tax_class'] = tax_class
         return values

product.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<!-- The COPYRIGHT file at the top level of this repository contains the full
+     copyright notices and license terms. -->
+<tryton>
+    <data>
+        <record model="ir.ui.view" id="category_view_form">
+            <field name="model">product.category</field>
+            <field name="inherit" ref="product.category_view_form"/>
+            <field name="name">category_form</field>
+        </record>
+    </data>
+</tryton>

tryton.cfg

@@ -2,10 +2,12 @@
 version=5.6.0
 depends:
     ir
+    account_product
     product
     product_price_list
     sale
     web_shop
 xml:
     message.xml
+    product.xml
     web.xml

view/category_form.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<!-- The COPYRIGHT file at the top level of this repository contains the full
+    copyright notices and license terms. -->
+<data>
+    <xpath expr="/form/notebook/page[@id='accounting']/field[@name='taxes_parent']" position="after">
+        <label name="woocommerce_tax_class"/>
+        <field name="woocommerce_tax_class"/>
+    </xpath>
+</data>