sector119 <sector...@gmail.com> wrote:
> Hello!
>
> I have some model:
>
> class Person(Base):
> __tablename__ = 'person'
>
> id = Column(BigInteger, primary_key=True, autoincrement=False)
> locality_id = Column(Integer, ForeignKey(SYSTEM_SCHEMA + '.locality.id'),
> nullable=False)
> street_id = Column(Integer, ForeignKey('street.id'), nullable=False)
> building = Column(Integer, nullable=False)
> apartment = Column(Integer, nullable=False)
> ...
>
>
> I want to create this model at different schemas: 'schema1', 'schema2',
> 'schema3' and model's FK street_id should point to 'street.id' at the same
> schema!
>
> How can I do that?
this is an ongoing area for people, as there’s different ways to do so-called
“multi-tenancy” vs. “sharding” etc. So it sort of depends on what you
actually need. Let’s assume you need the different Person classes
simultaneously, e.g. more of a sharding situation.
Easiest way is to make a mixin, there’s an example at
https://bitbucket.org/zzzeek/sqlalchemy/wiki/UsageRecipes/EntityName, second
one down.
Mixins have gotten a lot better, so you should be able to do what you need.
There’s even more fixes for mixins in 1.0 that is nearing beta releases.
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