Update example to sqlalchemy 2 (#1171)

diff --git a/docs/build/naming.rst b/docs/build/naming.rst
index b1b383eec51b8d63cdc456dae0aaf92e46709351..438374821775a6ae1761b04af16ca92782d9ab1b 100644 (file)
--- a/docs/build/naming.rst
+++ b/docs/build/naming.rst
@@ -165,14 +165,14 @@ used::
 
     # in your application's model:
 
-    meta = MetaData(naming_convention={
+    class Base(DeclarativeBase):
+        metadata = MetaData(naming_convention={
             "ix": "ix_%(column_0_label)s",
             "uq": "uq_%(table_name)s_%(column_0_name)s",
             "ck": "ck_%(table_name)s_`%(constraint_name)s`",
             "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
             "pk": "pk_%(table_name)s"
-          })
-    Base = declarative_base(metadata=meta)
+        })
 
     # .. in your Alembic env.py: