Track changes to your storm model objects with stormchaser.

Create a history table to store changes in:

>>> from storm.locals import *
>>> database = create_database('sqlite:')
>>> store = Store(database)
>>> store.execute("""
    CREATE table history (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        ref_class VARCHAR(200),
        ref_pk VARCHAR(200),
        ref_attr VARCHAR(200),
        new_value VARCHAR(200),
        ctime DATETIME,
        user VARCHAR(200)
    )""")

Now configure a Changelog class that uses the history table:

>>> changelog_cls = Changelog.configure(table='history')

And add it to your model class columns as a validator:

>>> class Article(object):
...     __storm_table__ = 'articles'
...     content = Unicode(validator=ChangelogTracker(changelog_cls))
...