mary_key=True,
>>>> default=uuid4())
>>>> children = relationship(
>>>> "ChildClass",
>>>> secondary="mix_parent_class_child_class",
>>>> cascade="all, delete",
>>>>
: Thursday, December 17, 2020 9:32:40 PM
To: noreply-spamdigest via sqlalchemy
Subject: Re: [sqlalchemy] Re: Can't delete cascade many-to-many with
polymorphic relationships unless using lazy=dynamic
perhaps you are looking to set viewonly=True on this second relationship? that
will exclude it from
id",
>>> ForeignKey("parent_class.id", ondelete="CASCADE"),
>>> nullable=False,
>>> ),
>>> Column("child_class_id", ForeignKey("child_class.id"), nullable=False),
>>> UniqueCo
t;parent_class_id",
>> "child_class_id",
>> name="uix_parent_class_child_class",
>> ),
>> )
>>
>> mix_child_class_child_child_class = Table(
>> "mix_child_class_child_child_class",
>>
"child_child_class_id",
> ForeignKey("child_child_class.id"),
> nullable=False,
> ),
> UniqueConstraint(
> "child_class_id",
> "child_child_class_id",
> name="uix_child_class_child_child_class",
>
or all SubClassXs that could be
> filtered to whatever subclass you need. All these relationships use the same
> mixer table, because they all share a primary key with BaseClass (and
> removing the need to make explicit mixed tables for every subclass).
>
> Mark Aquino
>
>
To: noreply-spamdigest via sqlalchemy
Subject: Re: [sqlalchemy] Re: Can't delete cascade many-to-many with
polymorphic relationships unless using lazy=dynamic
your examples aren't complete or runnable so I don't really know what the issue
is, although having two relationships to the same target
your examples aren't complete or runnable so I don't really know what the issue
is, although having two relationships to the same target class seems a little
unusual and I'm not sure why you'd need that.
On Thu, Dec 17, 2020, at 6:01 PM, maqui...@gmail.com wrote:
>
> I think I may have just
I think I may have just found a solution? Not sure if this is correct but
it looks like it worked when i changed the "extra" relationship to
passive_deletes=True instead of cascade
class ChildClass(XPressoBase):
__tablename__ = "child_class"
id = Column("id", UUID(as_uuid=True),
