Hm not so dumb actually, because __subclasses__ only lists immediate
subclasses. Getting all the mapped classes would involve more work that
way. So my preferred method remains this:
def get_all_mapped_classes():
return [cls for cls in Base._decl_class_registry.values() if isinstance(
cls, type)]
perjantai, 5. syyskuuta 2014 17.19.21 UTC+3 Alex Grönholm kirjoitti:
>
> You're right, I'm dumb. I should've just used __subclasses__ and be done
> with it.
> The use case is that I have a client-server app and I build a list of all
> classes for the client so the client knows which column types to use in
> tables. It's also used for automatically generating the column/relationship
> list on the client in the search dialog. So I won't have to make code
> changes to the client when I alter the model on the server.
>
> perjantai, 5. syyskuuta 2014 17.13.10 UTC+3 Michael Bayer kirjoitti:
>>
>> well it’s not set to be mapped until after the setup part of it.
>>
>> if you want to get every class whether mapped or not, maybe use
>> Base.__subclasses__() ?
>>
>> What’s the use case where you need the abstract base in the decl class
>> registry? it’s not really something you’d want to refer to in a
>> relationship().
>>
>>
>>
>> On Sep 5, 2014, at 9:56 AM, Alex Grönholm <alex.g...@nextday.fi> wrote:
>>
>> Thanks. I've filed an issue
>> <https://bitbucket.org/zzzeek/sqlalchemy/issue/3185/more-than-one-level-of-abstract-concrete>
>>
>> at Bitbucket.
>>
>> A follow-up question: Why are abstract base classes not present in the
>> declarative class registry? Or is there another way to get all the mapped
>> classes besides iterating over Base._decl_class_registry?
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "sqlalchemy" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to sqlalchemy+...@googlegroups.com.
>> To post to this group, send email to sqlal...@googlegroups.com.
>> Visit this group at http://groups.google.com/group/sqlalchemy.
>> For more options, visit https://groups.google.com/d/optout.
>>
>>
>>
--
You received this message because you are subscribed to the Google Groups
"sqlalchemy" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sqlalchemy+unsubscr...@googlegroups.com.
To post to this group, send email to sqlalchemy@googlegroups.com.
Visit this group at http://groups.google.com/group/sqlalchemy.
For more options, visit https://groups.google.com/d/optout.
