blockchain column handles int args

src/dexorder/database/column_types.py

@@ -1,5 +1,6 @@
 import dataclasses
 import math
+from typing import Union
 
 from sqlalchemy import TypeDecorator, BIGINT
 from sqlalchemy.dialects.postgresql import BYTEA, JSONB
@@ -24,8 +25,8 @@ class Blockchain(TypeDecorator):
     impl = BIGINT
     cache_ok = True
 
-    def process_bind_param(self, value: NativeBlockchain, dialect):
-        return value.id
+    def process_bind_param(self, value: Union[NativeBlockchain,int], dialect):
+        return value if type(value) is int else value.id
 
     def process_result_value(self, value: int, dialect):
         return NativeBlockchain.for_id(value)