Module « sqlalchemy.orm »

Fonction undefer_group - module sqlalchemy.orm

Signature de la fonction undefer_group

def undefer_group(name) 

Description

undefer_group.__doc__

Indicate that columns within the given deferred group name should be
    undeferred.

    The columns being undeferred are set up on the mapping as
    :func:`.deferred` attributes and include a "group" name.

    E.g::

        session.query(MyClass).options(undefer_group("large_attrs"))

    To undefer a group of attributes on a related entity, the path can be
    spelled out using relationship loader options, such as
    :func:`_orm.defaultload`::

        session.query(MyClass).options(
            defaultload("someattr").undefer_group("large_attrs"))

    .. versionchanged:: 0.9.0 :func:`_orm.undefer_group` is now specific to a
       particular entity load path.

    .. seealso::

        :ref:`deferred`

        :func:`_orm.defer`

        :func:`_orm.undefer`