[IMP] stock_lot_last_move_locations: Change python with sql for bette…

…r performance

stock_lot_last_move_locations/__init__.py

@@ -4,15 +4,41 @@
 
 def _post_install_put_last_move_locations_in_lots(cr, registry):
     """
-    This method will set the production cost on already done manufacturing orders.
+    Set the last move locations for all lots based on the latest stock move line.
     """
     env = api.Environment(cr, SUPERUSER_ID, {})
-    lots = env["stock.lot"].search([])
-    for lot in lots:
-        cond = [("qty_done", ">", 0), ("state", "=", "done"), ("lot_id", "=", lot.id)]
-        lines = env["stock.move.line"].search(cond)
-        if lines:
-            latest_line = lines.sorted(key=lambda line: line.write_date, reverse=True)[
-                0
-            ]
-            latest_line._put_last_move_locations_in_lots()
+
+    query = """
+        WITH latest_lines AS (
+            SELECT
+                lot_id,
+                MAX(write_date) AS max_write_date
+            FROM
+                stock_move_line
+            WHERE
+                qty_done > 0 AND state = 'done' AND lot_id IS NOT NULL
+            GROUP BY
+                lot_id
+        )
+        SELECT
+            sml.id AS move_line_id,
+            sml.lot_id,
+            l.name AS location_name,
+            ld.name AS location_dest_name
+        FROM
+            stock_move_line sml
+        INNER JOIN
+            latest_lines ll ON sml.lot_id = ll.lot_id AND sml.write_date = ll.max_write_date
+        INNER JOIN
+            stock_location l ON sml.location_id = l.id
+        INNER JOIN
+            stock_location ld ON sml.location_dest_id = ld.id
+    """
+    cr.execute(query)
+    results = cr.fetchall()
+
+    for move_line_id, lot_id, location_name, location_dest_name in results:
+        last_move_locations = f"{location_name} - {location_dest_name}"
+        env["stock.lot"].browse(lot_id).write(
+            {"last_move_locations": last_move_locations}
+        )