I see, thank you, Mike.
So, looks like I just wanted strange thing: having class to be distinct
from itself.
Thank you for clarifying!
Dmytro
вт, 25 черв. 2019 о 19:26 Mike Bayer пише:
>
>
> On Fri, Jun 21, 2019, at 7:22 AM, Dmytro Starosud wrote:
>
> Base cl
> you are storing, and how you are structuring your class hierarchy?
>
> Thanks,
>
> Simon
>
> On Fri, Jun 21, 2019 at 1:30 PM Dmytro Starosud
> wrote:
> >
> > Thanks for your reply!
> >
> > > you could probably insert another class as the parent of
kind of (possibly specialized) A1.
>
> However, if you query for A2, you will only get rows that are
> specifically A2, A2a or A2b.
>
> If you don't want this behaviour, you could probably insert another
> class as the parent of A1, with no polymorphic identity. At that
> poin
Base class A1 contains polymorphic_identity (along with polymorphic_on),
but Query(A1)doesn't produce where clause, whereas Query(A2) (where A2 is
subclass of A1 with its own polymorphic_identity) does.
Tried looking in docs with no success. I think I am just missing something.
from
Thanks a lot Mike!
вт, 18 вер. 2018 о 16:07 Mike Bayer пише:
> On Tue, Sep 18, 2018 at 7:07 AM Dmytro Starosud
> wrote:
> >
> > Hello group
> >
> > Please help me with the following. Imagine I have:
> >
> > @event.listens_for(Session, 'before_
Hello group
Please help me with the following. Imagine I have:
@event.listens_for(Session, 'before_flush')
def one(session, flush_context, instances):
pass
@event.listens_for(Session, 'before_flush')
def two(session, flush_context, instances):
pass
I.e. two handlers for the same
Hello guys!
I am trying to join two models by relationship, but I want to emulate
values of second model using from_statement.
class X(Base):
__tablename__ = 'x'
id = Column(Integer, primary_key=True)
class Y(Base):
__tablename__ = 'y'
id = Column(Integer, primary_key=True)
