[PonyORM-list] select() and Cannot iterate over non-entity Object

[Niklas Rosenstein]

Hi Alexander!

Thanks for your quick reply. I am sorry that I could not find the existing
requests for such a feature.

As you already the third person who ask about this type of queries in the
> last few days, I'll probably try to add this feature before the next Pony
> ORM release.


That would be pretty cool. :) Not only is this way of selecting less to
write, but it also feels much more natural.

Best regards,
NIklas

On 18 November 2014 20:56, Alexander Kozlovsky <
alexander.kozlovsky at gmail.com> wrote:

> Hi Niklas!
>
> > I would much rather write the first version. Is this a limitation of
> Pony ORM?
>
> Yes, currently Pony does not support the first version of your
> query. There is no reason why this query type cannot be implemented. I just
> need some time to do it. You are not the first person who ask about this
> feature, and someone already opened corresponding GitHub issue:
> https://github.com/ponyorm/pony/issues/65
>
> Each feature requires some hours to implement it, and the list of features
> we want to add is pretty big: it includes migrations, MS SQL Server
> support, generic admin interface, SQL analytic functions, advanced
> PostgreSQL data types, etc., etc. Because it is impossible to do all of it
> at once, my algorithm to choose the next task is quite simple: typically it
> is the feature which was requested by the most number of users in the
> recent period of time. As you already the third person who ask about this
> type of queries in the last few days, I'll probably try to add this feature
> before the next Pony ORM release.
>
> Regards,
> Alexander.
>
>
> On Tue, Nov 18, 2014 at 9:31 PM, Niklas Rosenstein <
> rosensteinniklas at gmail.com> wrote:
>
>> Hello,
>>
>> I try to use  pony.orm.select()  like this, where  User.accounts  is a
>> Set for the Entity "Account".
>>
>> user = User[1]
>> print(select(a for a in user.accounts if a.label == 'label'))
>>
>>
>> The solution to it would be
>>
>> user = User[1]
>>
>> print(select(a for a in Account if a.user == user and a.label == 'label'))
>>
>>
>> I would much rather write the first version. Is this a limitation of Pony
>> ORM?
>>
>> Python 3.4.1
>> Pony ORM 0.6
>>
>> Thanks in advance!
>> Niklas
>>
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>>
>>
>
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