Function _constraint_name_for_table

lib/sqlalchemy/sql/naming.py:149–169

(const, table)

def _constraint_name_for_table(const, table):
    metadata = table.metadata
    convention = _get_convention(metadata.naming_convention, type(const))

    if isinstance(const.name, conv):
        return const.name
    elif (
        convention is not None
        and not isinstance(const.name, conv)
        and (
            const.name is None
            or "constraint_name" in convention
            or const.name is _NONE_NAME
        )
    ):
        return conv(
            convention
            % ConventionDict(const, table, metadata.naming_convention)
        )
    elif convention is _NONE_NAME:
        return None


@event.listens_for(