DeleteColumnSignal
Called when a column is removed from a class, with the arguments
(cls, connection, column_name, so_column_obj, post_funcs).
Like AddColumnSignal this is called after the action has been
performed, and is called for subclassing (when a column is
implicitly removed by setting it to None).
The DeleteColumnSignal class is accessible via the
sqlobject.events
module.
post_funcs are called with (cls, so_column_obj)
Methods
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
See
the source
for more information.