Ok, in my declarative base, I have this:
@declared_attr
def __mapper_args__(cls):
return {'column_prefix': cls.__tablename__[0:5]}
That wasn't working at all, so to test it, I went into one class
declaration and specified it directly (no inheritance) as so:
__mapper_args__ = {'column_prefix': 'ste_'}
Then I ran:
Base.metadata.drop_all(engine)
Base.metadata.create_all(engine)
and my col-names in the DB for that table still don't have the "ste_"
prefix.
Can anyone tell me what I'm doing wrong?
Thx
Dewey
On Thursday, December 11, 2014 2:37:27 PM UTC-6, Mariano Mara wrote:
>
>
>
> 2014-12-11 17:28 GMT-03:00 dewey <[email protected] <javascript:>>:
>>
>> Oh doh...that is perfect!!!
>>
>> Except for now, I either need to merge my __mapper_args__ from each
>> table to my base __mapper_args__
>>
>> Or is there a way to add to __mapper_args__ in the base DYNAMICALLY
>> based on some property in the class?
>> That would mean I could automate the whole process..
>>
>>
> You decorate your __mapper_args__ with declared_attr (see
> http://docs.sqlalchemy.org/en/rel_0_9/orm/extensions/declarative.html#sqlalchemy.ext.declarative.declared_attr)
>
> and build your required __mapper_args__ according to the class you are in
> (see the second example in the docs I just linked).
>
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