def compile(self, prop):
if self.prop:
return
self.prop = prop
mapper = prop.mapper.primary_mapper()
if mapper._get_property(self.key, raiseerr=False) is None:
pj = self.kwargs.pop('primaryjoin', None)
sj = self.kwargs.pop('secondaryjoin', None)
parent = prop.parent.primary_mapper()
self.kwargs.setdefault('viewonly', prop.viewonly)
self.kwargs.setdefault('post_update', prop.post_update)
relation = PropertyLoader(parent, prop.secondary, pj, sj,
backref=BackRef(prop.key, _prop=prop),
is_backref=True,
**self.kwargs)
mapper._compile_property(self.key, relation);
prop._reverse_property = mapper._get_property(self.key)
mapper._get_property(self.key)._reverse_property = prop
else:
raise exceptions.ArgumentError("Error creating backref '%s' on relation '%s': property of that name exists on mapper '%s'" % (self.key, prop, mapper))
def compile(self, prop):
if self.prop:
return
self.prop = prop
mapper = prop.mapper.primary_mapper()
if mapper._get_property(self.key, raiseerr=False) is None:
pj = self.kwargs.pop('primaryjoin', None)
sj = self.kwargs.pop('secondaryjoin', None)
parent = prop.parent.primary_mapper()
self.kwargs.setdefault('viewonly', prop.viewonly)
self.kwargs.setdefault('post_update', prop.post_update)
relation = PropertyLoader(parent, prop.secondary, pj, sj,
backref=BackRef(prop.key, _prop=prop),
is_backref=True,
**self.kwargs)
mapper._compile_property(self.key, relation);
prop._reverse_property = mapper._get_property(self.key)
mapper._get_property(self.key)._reverse_property = prop
else:
raise exceptions.ArgumentError("Error creating backref '%s' on relation '%s': property of that name exists on mapper '%s'" % (self.key, prop, mapper))
def compile(self, prop):
if self.prop:
return
self.prop = prop
mapper = prop.mapper.primary_mapper()
if mapper._get_property(self.key, raiseerr=False) is None:
if prop.secondary:
pj = self.kwargs.pop('primaryjoin', prop.secondaryjoin)
sj = self.kwargs.pop('secondaryjoin', prop.primaryjoin)
else:
pj = self.kwargs.pop('primaryjoin', prop.primaryjoin)
sj = self.kwargs.pop('secondaryjoin', None)
if sj:
raise sa_exc.InvalidRequestError(
"Can't assign 'secondaryjoin' on a backref against "
"a non-secondary relation.")
parent = prop.parent.primary_mapper()
self.kwargs.setdefault('viewonly', prop.viewonly)
self.kwargs.setdefault('post_update', prop.post_update)
relation = RelationProperty(parent, prop.secondary, pj, sj,
backref=BackRef(prop.key, _prop=prop),
**self.kwargs)
mapper._configure_property(self.key, relation);
prop._add_reverse_property(self.key)
else:
raise sa_exc.ArgumentError("Error creating backref '%s' on relation '%s': "
"property of that name exists on mapper '%s'" % (self.key, prop, mapper))
def compile(self, prop):
if self.prop:
return
self.prop = prop
mapper = prop.mapper.primary_mapper()
if mapper._get_property(self.key, raiseerr=False) is None:
if prop.secondary:
pj = self.kwargs.pop("primaryjoin", prop.secondaryjoin)
sj = self.kwargs.pop("secondaryjoin", prop.primaryjoin)
else:
pj = self.kwargs.pop("primaryjoin", prop.primaryjoin)
sj = self.kwargs.pop("secondaryjoin", None)
if sj:
raise sa_exc.InvalidRequestError(
"Can't assign 'secondaryjoin' on a backref against " "a non-secondary relation."
)
parent = prop.parent.primary_mapper()
self.kwargs.setdefault("viewonly", prop.viewonly)
self.kwargs.setdefault("post_update", prop.post_update)
relation = RelationProperty(
parent, prop.secondary, pj, sj, backref=BackRef(prop.key, _prop=prop), _is_backref=True, **self.kwargs
)
mapper._compile_property(self.key, relation)
prop._reverse_property = mapper._get_property(self.key)
mapper._get_property(self.key)._reverse_property = prop
else:
raise sa_exc.ArgumentError(
"Error creating backref '%s' on relation '%s': "
"property of that name exists on mapper '%s'" % (self.key, prop, mapper)
)
