53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
"""
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.. module: lemur.extensions
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:copyright: (c) 2015 by Netflix Inc., see AUTHORS for more
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:license: Apache, see LICENSE for more details.
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"""
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from flask.ext.sqlalchemy import SQLAlchemy, SignallingSession, SessionBase
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class _SignallingSession(SignallingSession):
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"""A subclass of `SignallingSession` that allows for `binds` to be specified
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in the `options` keyword arguments.
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"""
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def __init__(self, db, autocommit=False, autoflush=True, **options):
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self.app = db.get_app()
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self._model_changes = {}
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self.emit_modification_signals = \
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self.app.config['SQLALCHEMY_TRACK_MODIFICATIONS']
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bind = options.pop('bind', None)
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if bind is None:
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bind = db.engine
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binds = options.pop('binds', None)
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if binds is None:
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binds = db.get_binds(self.app)
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SessionBase.__init__(self,
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autocommit=autocommit,
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autoflush=autoflush,
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bind=bind,
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binds=binds,
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**options)
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class _SQLAlchemy(SQLAlchemy):
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"""A subclass of `SQLAlchemy` that uses `_SignallingSession`."""
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def create_session(self, options):
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return _SignallingSession(self, **options)
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db = SQLAlchemy()
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from flask.ext.migrate import Migrate
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migrate = Migrate()
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from flask.ext.bcrypt import Bcrypt
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bcrypt = Bcrypt()
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from flask.ext.principal import Principal
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principal = Principal()
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