def object_level_definitions(cls): # pylint: disable=no-self-argument
"""Set up a backref so that we can create an object level custom
attribute definition without the need to do a flush to get the
assessment id.
This is used in the relate_ca method in hooks/assessment.py.
"""
cad = custom_attribute_definition.CustomAttributeDefinition
current_type = cls.__name__
def join_expr():
return sa.and_(
orm.foreign(orm.remote(cad.definition_id)) == cls.id,
cad.definition_type == utils.underscore_from_camelcase(
current_type),
)
# Since there is some kind of generic relationship on CAD side, correct
# join expression for backref should be provided. If default, every call of
# "{}_definition".format(definition_type) on CAD will produce a lot of
# unnecessary DB queries returning nothing.
def backref_join_expr():
return orm.remote(cls.id) == orm.foreign(cad.definition_id)
return db.relationship(
"CustomAttributeDefinition",
primaryjoin=join_expr,
backref=db.backref(
"{}_definition".format(
utils.underscore_from_camelcase(current_type)),
lazy="joined",
primaryjoin=backref_join_expr,
),
cascade="all, delete-orphan",
)
def children(cls):
return db.relationship(
cls.__name__,
backref=db.backref('parent', remote_side='{0}.id'.format(cls.__name__)),
)
def children(cls): # pylint: disable=no-self-argument
return db.relationship(
cls.__name__,
backref=db.backref(
'parent', remote_side='{0}.id'.format(cls.__name__)),
)
def children(cls): # pylint: disable=no-self-argument
return db.relationship(
cls.__name__,
backref=db.backref('parent',
remote_side='{0}.id'.format(cls.__name__)),
)
def children(cls):
return db.relationship(
cls.__name__,
backref=db.backref('parent',
remote_side='{0}.id'.format(cls.__name__)),
)
