On Fri, Mar 2, 2018 at 11:21 AM, Harshvardhan Gupta
<harshsay...@gmail.com> wrote:
> I also tried loading a related attribute , and it still returns None.
you need to merge the object:
my_user = session.merge(my_user)
that is your only option. E.g. do the query.
>
>
> On Friday, 2 March 2018 11:00:47 UTC-5, Harshvardhan Gupta wrote:
>>
>> Thanks, I am able to call my object, but the attribute prints none:
>>
>>
>> E.g. my model is:
>>
>> class User(Dictifiable, db.Model, UserMixin):
>> __tablename__ = 'user'
>>
>> id = Column(Integer, Sequence('user_id_seq'), primary_key=True)
>> full_name = Column(String(50))
>>
>>
>> And this is what I have done :
>>
>> `u_lazy = User(id=1)`
>> `db.session().enable_relationship_loading(u_lazy)`
>> when i try to print u_lazy.full_name, it shows null (it is non null in db
>> )
>>
>>
>> On Friday, 2 March 2018 10:55:11 UTC-5, Mike Bayer wrote:
>>>
>>> On Fri, Mar 2, 2018 at 10:52 AM, Harshvardhan Gupta
>>> <harsh...@gmail.com> wrote:
>>> > Thanks for the reply.
>>> >
>>> > There is a guarantee that the user will exist ,why is why I want to
>>> > prevent that extra db query.
>>> >
>>> > When I try to do enable relationship loading ,I get the error :
>>> > Scoped session has no attribute enable relationship loading.
>>>
>>> that's a scoped_session(), not a Session, access the Session by
>>> calling it: scoped_session().enable_relationship_loading(obj)
>>>
>>> >
>>> > --
>>> > SQLAlchemy -
>>> > The Python SQL Toolkit and Object Relational Mapper
>>> >
>>> > http://www.sqlalchemy.org/
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>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
> description.
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--
SQLAlchemy -
The Python SQL Toolkit and Object Relational Mapper
http://www.sqlalchemy.org/
To post example code, please provide an MCVE: Minimal, Complete, and Verifiable
Example. See http://stackoverflow.com/help/mcve for a full description.
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