rating routes added

back/db.py

@@ -1,8 +1,8 @@
 from typing import AsyncGenerator
 
-from sqlalchemy import create_engine, select
+from sqlalchemy import create_engine, select, MetaData
 # from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
-from sqlalchemy.orm import sessionmaker, Session
+from sqlalchemy.orm import sessionmaker, Session, DeclarativeBase
 from sqlalchemy.ext.declarative import declarative_base
 
 from fastapi import Depends
@@ -18,4 +18,18 @@ engine = create_engine(
 SessionLocal = sessionmaker(bind=engine, autoflush=True, autocommit=False)
 
 database = SessionLocal()
-Base = declarative_base()
+# Base = declarative_base()
+
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# in your application's model:
+
+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"
+    })