diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sqlalchemy/orm/__init__.py | 1 | ||||
| -rw-r--r-- | lib/sqlalchemy/orm/decl_api.py | 14 |
2 files changed, 14 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/__init__.py b/lib/sqlalchemy/orm/__init__.py index 4793fc638..ac06efba6 100644 --- a/lib/sqlalchemy/orm/__init__.py +++ b/lib/sqlalchemy/orm/__init__.py @@ -22,6 +22,7 @@ from .attributes import QueryableAttribute # noqa from .context import QueryContext # noqa from .decl_api import as_declarative # noqa from .decl_api import declarative_base # noqa +from .decl_api import DeclarativeMeta # noqa from .decl_api import declared_attr # noqa from .decl_api import has_inherited_table # noqa from .decl_api import registry # noqa diff --git a/lib/sqlalchemy/orm/decl_api.py b/lib/sqlalchemy/orm/decl_api.py index 8afdb3a50..1166d307e 100644 --- a/lib/sqlalchemy/orm/decl_api.py +++ b/lib/sqlalchemy/orm/decl_api.py @@ -657,11 +657,23 @@ class registry(object): __tablename__ = "my_table" id = Column(Integer, primary_key=True) + The above dynamically generated class is equivalent to the + non-dynamic example below:: + + from sqlalchemy.orm import registry + from sqlalchemy.orm.decl_api import DeclarativeMeta + + mapper_registry = registry() + + class Base(metaclass=DeclarativeMeta): + __abstract__ = True + registry = mapper_registry + metadata = mapper_registry.metadata + The :meth:`_orm.registry.generate_base` method provides the implementation for the :func:`_orm.declarative_base` function, which creates the :class:`_orm.registry` and base class all at once. - See the section :ref:`orm_declarative_mapping` for background and examples. |