From 9c9fe2fc2425e5fe251415d622eb5b6639584b37 Mon Sep 17 00:00:00 2001
From: Chris Withers <chris@simplistix.co.uk>
Date: Thu, 10 Feb 2011 15:15:22 +0000
Subject: [PATCH] Only alter the SA objects after running the visitor, so the
 visitor may inspect

---
 migrate/changeset/schema.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/migrate/changeset/schema.py b/migrate/changeset/schema.py
index ef8dd85..00e1a3e 100644
--- a/migrate/changeset/schema.py
+++ b/migrate/changeset/schema.py
@@ -559,11 +559,10 @@ populated with defaults
         if table is not None:
             self.table = table
         engine = self.table.bind
-        if self.alter_metadata:
-            self.remove_from_table(self.table, unset_table=False)
         visitorcallable = get_engine_visitor(engine, 'columndropper')
         engine._run_visitor(visitorcallable, self, connection, **kwargs)
         if self.alter_metadata:
+            self.remove_from_table(self.table, unset_table=False)
             self.table = None
         return self