Hello, I have the following mappers:
orm.mapper(Content, table.content,
polymorphic_on = table.content.c.content_type_id,
...)
orm.mapper(News, table.news, inherits = Content,
polymorphic_on = table.content.c.content_type_id)
orm.mapper(PlatformNews, table.platform_news, inherits = News,
polymorphic_identity = _get_type_id('platform news'))
When I do:
Content.query.with_polymorphic([PlatformNews])
SQLAlchemy forgot to add a JOIN for the news (News) table (because there
is more than one level of inheritance I guess), I wondered if there was
a way to do that automatically ?
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