use public foreign keys collection

diff --git a/alembic/op.py b/alembic/op.py
index 74acb26a1749c543a9f826ba6548bef7b361c63f..c4682b62c4613829cb9591f5cfd966c97bdd31b1 100644 (file)
--- a/alembic/op.py
+++ b/alembic/op.py
@@ -49,7 +49,7 @@ def _unique_constraint(name, source, local_cols):
 def _table(name, *columns, **kw):
     m = schema.MetaData()
     t = schema.Table(name, m, *columns, **kw)
-    for f in t._foreign_keys:
+    for f in t.foreign_keys:
         _ensure_table_for_fk(m, f)
     return t