[IMP] product: uom on product packaging

If the 'Unit of Measure' setting is enable. We would like to see the
product uom on on the product packaging.

addons/product/models/product.py

@@ -593,6 +593,7 @@ class ProductPackaging(models.Model):
     product_id = fields.Many2one('product.product', string='Product')
     qty = fields.Float('Contained Quantity', help="The total number of products you can have per pallet or box.")
     barcode = fields.Char('Barcode', copy=False, help="Barcode used for packaging identification.")
+    product_uom_id = fields.Many2one('uom.uom', related='product_id.uom_id')
 
 
 class SupplierInfo(models.Model):

addons/product/views/product_views.xml

@@ -478,6 +478,7 @@
                     <field name="product_id"/>
                     <field name="name" string="Packaging"/>
                     <field name="qty"/>
+                    <field name="product_uom_id" options="{'no_open': True, 'no_create': True}" groups="uom.group_uom"/>
                 </tree>
             </field>
         </record>
@@ -509,7 +510,11 @@
                                 <field name="product_id"  required='True' attrs="{'readonly': [('id', '!=', False)]}"/>
                             </group>
                             <group name="qty">
-                                <field name="qty"/>
+                                <label for="qty" string="Contained quantity"/>
+                                <div class="o_row">
+                                    <field name="qty"/>
+                                    <field name="product_uom_id" options="{'no_open': True, 'no_create': True}" groups="uom.group_uom"/>
+                                </div>
                                 <field name="barcode"/>
                             </group>
                         </group>