Method setup_mappers

test/ext/test_associationproxy.py:946–980

(cls)

    @classmethod
    def setup_mappers(cls):
        parents_table, children_table = cls.tables("Parent", "Children")

        class CustomProxy(_AssociationList):
            def __init__(self, lazy_collection, creator, value_attr, parent):
                getter, setter = parent._default_getset(lazy_collection)
                _AssociationList.__init__(
                    self, lazy_collection, creator, getter, setter, parent
                )

        class Parent(cls.Basic):
            children = association_proxy(
                "_children",
                "name",
                proxy_factory=CustomProxy,
                proxy_bulk_set=CustomProxy.extend,
            )

            def __init__(self, name):
                self.name = name

        class Child(cls.Basic):
            def __init__(self, name):
                self.name = name

        cls.mapper_registry.map_imperatively(
            Parent,
            parents_table,
            properties={
                "_children": relationship(
                    Child, lazy="joined", collection_class=list
                )
            },
        )
        cls.mapper_registry.map_imperatively(Child, children_table)

    def test_sequence_ops(self):
        self._test_sequence_ops()