def defer(*keys):
"""Return a ``MapperOption`` that will convert the column property of the
given name into a deferred load.
Used with ``query.options()``
"""
return strategies.DeferredOption(keys, defer=True)
def undefer(name):
"""Return a ``MapperOption`` that will convert the column property
of the given name into a non-deferred (regular column) load.
Used with ``query.options()``.
"""
return strategies.DeferredOption(name, defer=False)
def undefer(*keys):
"""Return a ``MapperOption`` that will convert the column property of the
given name into a non-deferred (regular column) load.
Used with :meth:`~sqlalchemy.orm.query.Query.options`.
"""
return strategies.DeferredOption(keys, defer=False)
