Add Trade.commit method for easy use

freqtrade/persistence/models.py

@@ -74,7 +74,7 @@ def cleanup_db() -> None:
     Flushes all pending operations to disk.
     :return: None
     """
-    Trade.query.session.commit()
+    Trade.commit()
 
 
 def clean_dry_run_db() -> None:
@@ -86,7 +86,7 @@ def clean_dry_run_db() -> None:
         # Check we are updating only a dry_run order not a prod one
         if 'dry_run' in trade.open_order_id:
             trade.open_order_id = None
-    Trade.query.session.commit()
+    Trade.commit()
 
 
 class Order(_DECL_BASE):
@@ -711,6 +711,10 @@ class Trade(_DECL_BASE, LocalTrade):
             Order.query.session.delete(order)
 
         Trade.query.session.delete(self)
+        Trade.commit()
+
+    @staticmethod
+    def commit():
         Trade.query.session.commit()
 
     @staticmethod