use repository and go via Product [view_using_repo]

Author: hjwp

src/allocation/views.py

@@ -3,14 +3,10 @@
 
 def allocations(orderid: str, uow: unit_of_work.SqlAlchemyUnitOfWork):
     with uow:
-        results = uow.session.execute(
-            """
-            SELECT ol.sku, b.reference
-            FROM allocations AS a
-            JOIN batches AS b ON a.batch_id = b.id
-            JOIN order_lines AS ol ON a.orderline_id = ol.id
-            WHERE ol.orderid = :orderid
-            """,
-            dict(orderid=orderid),
-        )
-    return [{"sku": sku, "batchref": batchref} for sku, batchref in results]
+        products = uow.products.for_order(orderid=orderid)
+        batches = [b for p in products for b in p.batches]
+        return [
+            {"sku": b.sku, "batchref": b.reference}
+            for b in batches
+            if orderid in b.orderids
+        ]