Add product mix

__init__.py

@@ -5,7 +5,7 @@ from trytond.pool import Pool
 import restaurant
 import sale
 import production
-# import bom
+import product
 import invoice
 
 
@@ -19,7 +19,8 @@ def register():
         sale.SaleForceDraft,
         sale.SaleLine,
         production.Production,
-        # bom.BOM,
+        product.ProductMixOption,
+        product.Product,
         invoice.InvoiceLine,
         module='sale_pos_frontend_rest', type_='model')
     Pool.register(

product.py

@@ -0,0 +1,21 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import fields, ModelSQL
+from trytond.pool import PoolMeta
+
+__all__ = ['Product', 'ProductMixOption']
+
+
+class Product(metaclass=PoolMeta):
+    __name__ = 'product.product'
+    product_mix = fields.Many2Many('product.product-mix.option',
+        'product', 'option', 'Mix')
+
+
+class ProductMixOption(ModelSQL):
+    'Product Mix Option'
+    __name__ = 'product.product-mix.option'
+    product = fields.Many2One('product.product', 'Product',
+        ondelete='CASCADE', required=True, select=True)
+    option = fields.Many2One('product.product', 'Product',
+        ondelete='CASCADE', required=True, select=True)

product.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!-- This file is part product_barcode module for Tryton.
+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="product_view_form">
+            <field name="model">product.product</field>
+            <field name="inherit" ref="product.product_view_form"/>
+            <field name="name">product_form</field>
+        </record>
+
+    </data>
+</tryton>

tryton.cfg

@@ -9,3 +9,4 @@ depends:
 xml:
     restaurant.xml
     sale.xml
+    product.xml

view/product_form.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  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='general']/field[@name='categories']"
+        position="after">
+        <field name="product_mix" colspan="2"/>
+    </xpath>
+</data>