[FIX] purchase: link extra move to PO line

Commit ec949ad5 links the extra move to the Sale Order through the
procurement. To be consistent, we also have to link the extra move to
the Purchase Order.

The original issue is that any extra move is not taken into account in
the received quantity calculated.

opw-665398

addons/purchase/purchase.py

@@ -434,6 +434,7 @@ class PurchaseOrderLine(models.Model):
 
     @api.depends('order_id.state', 'move_ids.state')
     def _compute_qty_received(self):
+        ProductUom = self.env['product.uom']
         for line in self:
             if line.order_id.state not in ['purchase', 'done']:
                 line.qty_received = 0.0
@@ -444,7 +445,10 @@ class PurchaseOrderLine(models.Model):
             total = 0.0
             for move in line.move_ids:
                 if move.state == 'done':
-                    total += move.product_uom_qty
+                    if move.product_uom != line.product_uom:
+                        total += ProductUom._compute_qty_obj(move.product_uom, move.product_uom_qty, line.product_uom)
+                    else:
+                        total += move.product_uom_qty
             line.qty_received = total
 
     name = fields.Text(string='Description', required=True)

addons/purchase/stock.py

@@ -12,6 +12,14 @@ class stock_picking(osv.osv):
             readonly=True, relation="many2one"),
     }
 
+    def _prepare_values_extra_move(self, cr, uid, op, product, remaining_qty, context=None):
+        res = super(stock_picking, self)._prepare_values_extra_move(cr, uid, op, product, remaining_qty, context=context)
+        for m in op.linked_move_operation_ids:
+            if m.move_id.purchase_line_id and m.move_id.product_id == product:
+                res['purchase_line_id'] = m.move_id.purchase_line_id.id
+                break
+        return res
+
 
 class stock_move(osv.osv):
     _inherit = 'stock.move'