On 02/01/2017 01:54 PM, derek.mil...@spacex.com wrote:
It doesn't appear that the "default" column_info field allows for
anything other than a generic default. I currently have the following
event handler:
|
@event.listens_for(Table,'column_reflect')
Okay never mind, the behaviour I observed was due to me loading the objects
from cache again *after* having changed their attributes - I think. I shall
post again if I have to revisit this :)
On Wednesday, February 1, 2017 at 12:01:58 PM UTC+1, Denis Krienbühl wrote:
>
> Hi
>
> I'm trying to
Hi
I'm trying to add a somewhat transparent cache to certain SQLAlchemy
objects in my application. Not a general query cache, just a cache for
often used objects with a Memcached backend.
This is all working just as expected with one caveat. After loading an
object from the cache I merge it
I took the SQL into mysql directly to see what may be going wrong, it looks
like the generated
SELECT
thing.id AS thing_id,
thing.type_id AS thing_type_id,
thing.txt AS thing_txt,
(SELECT type.id FROM type WHERE type.id = thing.type_id) AS
_sa_polymorphic_on,
thing.stuff AS thing_stuff
FROM
I am having a strange issue with merging a polymorphic relationship, I've
managed to reduce my problem to this code:
from sqlalchemy import *
from sqlalchemy import select, and_, event, inspect
from sqlalchemy.orm import *
from sqlalchemy.ext.declarative import *
Base = declarative_base()
you would use the column_reflect event and set the value of the
"default" in the given dictionary to be your FetchedValue object.
On 01/31/2017 05:06 PM, derek.mil...@spacex.com wrote:
I am attempting to reflect an existing PostgreSQL database that has
triggers setting a version_num column.
I resolved this issue, it was a misconfiguration of my 'polymorphic_on'
On Wednesday, February 1, 2017 at 8:35:59 AM UTC-6, Shane Carey wrote:
>
> I took the SQL into mysql directly to see what may be going wrong, it
> looks like the generated
>
> SELECT
> thing.id AS thing_id,
> thing.type_id
It doesn't appear that the "default" column_info field allows for anything
other than a generic default. I currently have the following event handler:
@event.listens_for(Table, 'column_reflect')
def _set_fetched_value_for_triggered_columns(inspector, table, column_info):
if
