Enahncement: API

tests/test_extension.py

@@ -37,32 +37,28 @@ class Foo(Base):
 
     @app.route()
     @json
-    @app.db
     def get(req):
         with app.db.session() as session:
             result = session.scalars(select(Foo)).all()
         return {f.id: f.title for f in result}
 
     @app.route()
     @json
-    @app.db
     def got(req):
-        Foo(title='foo')
+        with app.db.session.begin():
+            app.db.session.add(Foo(title='foo'))
         raise statuses.created()
 
     @app.route()
     @json
-    @app.db
     def err(req):
-        Foo(title='qux')
+        with app.db.session() as session:
+            session.add(Foo(title='qux'))
         raise statuses.badrequest()
 
     def getfoo(title):
         with app.db.session() as session:
-            result = session.scalars(
-                select(Foo).where(Foo.title == title)
-            ).first()
-            return result
+            return session.query(Foo).filter_by(title=title).first()
 
     with Given():
         assert status == 200

yhttp/ext/sqlalchemy/install.py

@@ -20,4 +20,8 @@ def ready(app):
         def shutdown(app):
             app.db.disconnect()
 
+        @app.when
+        def endresponse(response):
+            app.db.session.reset()
+
     app.db = db

yhttp/ext/sqlalchemy/orm.py

@@ -1,20 +1,14 @@
-import functools
-
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker, close_all_sessions, Session, \
     scoped_session
-from yhttp.core import HTTPStatus
 
 
 class ORM:
     def __init__(self, basemodel, url=None):
         self.url = url
         self.engine = None
         self.basemodel = basemodel
-        self._session = scoped_session(sessionmaker())
-
-    def session(self):
-        return self._session()
+        self.session = scoped_session(sessionmaker())
 
     def copy(self, url=None):
         return ORM(self.basemodel, url=url or self.app.settings.db.url)
@@ -28,12 +22,12 @@ def connect(self, url=None):
         assert u is not None
 
         self.engine = create_engine(u, isolation_level='REPEATABLE READ')
-        self._session.configure(bind=self.engine)
+        self.session.configure(bind=self.engine)
 
     def disconnect(self):
         close_all_sessions()
-        self._session.expunge_all()
-        self._session.remove()
+        self.session.expunge_all()
+        self.session.remove()
         self.engine.dispose()
         self.engine = None
 
@@ -58,18 +52,3 @@ def connect(self, url=None):
             )
 
         return super().connect(url=url or self.app.settings.db.url)
-
-    def __call__(self, handler):
-        @functools.wraps(handler)
-        def outter(*a, **kw):
-            try:
-                return handler(*a, **kw)
-            except HTTPStatus as ex:
-                if ex.keepheaders:
-                    return ex
-
-                raise
-            finally:
-                self._session.reset()
-
-        return outter