Fill secondary unit from product customer

Closes #2294

modules/sale_secondary_unit/CHANGELOG

@@ -1,3 +1,4 @@
+* Fill secondary unit from product customer
 * Remove support for Python 3.8
 * Add support for Python 3.13
 

modules/sale_secondary_unit/sale.py

@@ -140,16 +140,19 @@ class Line(metaclass=PoolMeta):
     def set_secondary(cls, lines, name, value):
         pass
 
-    @fields.depends('secondary_unit',
+    @fields.depends(
+        'secondary_unit', 'product',
         methods=['on_change_with_secondary_quantity', '_secondary_record'])
     def on_change_product(self):
         super().on_change_product()
         secondary_record = self._secondary_record()
-        if secondary_record and self.secondary_unit:
+        if secondary_record:
             secondary_uom = secondary_record.sale_secondary_uom
-            if secondary_uom:
+            if self.secondary_unit and secondary_uom:
                 if self.secondary_unit.category != secondary_uom.category:
                     self.secondary_unit = None
+            if not self.secondary_unit and secondary_record != self.product:
+                self.secondary_unit = secondary_uom
 
         if secondary_record:
             self.secondary_uom_factor = (

modules/sale_secondary_unit/tests/scenario_sale_secondary_unit.rst

@@ -15,6 +15,7 @@ Activate modules::
 
     >>> config = activate_modules([
     ...     'sale_amendment',
+    ...     'sale_product_customer',
     ...     'sale_secondary_unit',
     ...     'account_invoice_secondary_unit',
     ...     'stock_secondary_unit'],
@@ -53,13 +54,20 @@ Create product::
     >>> template.type = 'goods'
     >>> template.salable = True
     >>> template.sale_secondary_uom = gr
-    >>> template.sale_secondary_uom_factor = 200
+    >>> template.sale_secondary_uom_factor = 100
     >>> template.sale_secondary_uom_rate
-    0.005
+    0.01
     >>> template.list_price = Decimal('10')
     >>> template.account_category = account_category
     >>> template.save()
     >>> product, = template.products
+    >>> product_customer = product.product_customers.new()
+    >>> product_customer.party = customer
+    >>> product_customer.sale_secondary_uom = gr
+    >>> product_customer.sale_secondary_uom_factor = 200
+    >>> product_customer.sale_secondary_uom_rate
+    0.005
+    >>> product.save()
 
 Sale product::
 
@@ -75,6 +83,10 @@ Sale product::
 
 Check secondary unit::
 
+    >>> assertEqual(line.secondary_unit, gr)
+    >>> line.secondary_quantity
+    2000.0
+    >>> line.secondary_quantity = None
     >>> line.secondary_unit = kg
     >>> line.secondary_quantity
     2.0