do not unnecessarily close the database connection (fixes #20)

pyalchemybiz/lib/base.py

@@ -11,10 +11,8 @@ from pylons.i18n import _, ungettext, N_, add_fallback, set_lang
 from pylons.templating import render
 
 import pyalchemybiz.lib.helpers as h
-import pyalchemybiz.model as model
 
 from pyalchemybiz.model import meta
-from sqlalchemy.orm import sessionmaker
 
 
 class BaseController(WSGIController):
@@ -31,13 +29,11 @@ class BaseController(WSGIController):
             except:
                 pass
         # connect to database
-        conn = meta.engine.connect()
-        meta.Session.configure(bind=conn)
         try:
             return WSGIController.__call__(self, environ, start_response)
         finally:
             meta.Session.remove()
-            conn.close()
+
 
 # Include the '_' function in the public names
 __all__ = [__name for __name in locals().keys() if not __name.startswith('_') \

pyalchemybiz/model/__init__.py

@@ -16,6 +16,7 @@ def init_model(engine):
 
     meta.engine = engine
     meta.Session = orm.scoped_session(sm)
+
     person.t_person = sa.Table(
         'person', meta.metadata, autoload=True, autoload_with=engine)
     customer.t_customer = sa.Table(