d ultimately led me to the solution. Since
__declare_last__ runs for all the subclasses as well I ended up with the
link attribute on both Context and the subclasses. Changing this to limit
it only on Context solved the issue for me.
Thanks!
Mattias L
On Monday, November 2, 2015 at 3:16:07 PM UTC+1
, November 3, 2015 at 3:32:02 PM UTC+1, Mattias Lagergren wrote:
>
> Hi Michael,
>
> I've been putting together a self-contained example. If you save it to a
> file test_model you should be able to run it:
>
>
> import sqlalchemy
> import sqlalchemy.orm
> import
tr.
Best regards,
Mattias L
On Monday, November 2, 2015 at 3:16:07 PM UTC+1, Mattias Lagergren wrote:
>
> Hi,
>
> I'm trying to use load_only and joinedload on a relationship
> model.Asset.parent. The parent relation is polymorphic and can be either
> Task or Projec
Hi,
I'm trying to use load_only and joinedload on a relationship
model.Asset.parent. The parent relation is polymorphic and can be either
Task or Project with the common Base class called Context.
import sqlalchemy.orm
import sqlalchemy.inspection
entity =
oolean or other
values:
print
session.query(model.Variable_Value).filter(model.Variable_Value.casted_value
> 5).all()
On Wednesday, September 16, 2015 at 5:00:02 PM UTC+2, Michael Bayer wrote:
>
>
>
> On 9/16/15 6:46 AM, Mattias Lagergren wrote:
>
>
> The import
Forgot the actual question; is there a better less complicated solution?
With hybrid_property expression I get into the problem that it doesn't load
up front: session.query(Variable_Value)
Thanks!
Mattias L
On Friday, September 18, 2015 at 12:25:41 PM UTC+2, Mattias Lagergren wrote:
>
&
Hi Jonathan,
Yes, but as I mentioned in the original post, this is to improve an
existing system and a solution that does not involve changes to the
database schema would be ideal.
I think I've found a way forward by adding a column with column_property
and then using a synonym to with a
t does not work when mixing data types.
Again, thank you for helping!
/Mattias L
On Wednesday, September 16, 2015 at 5:00:02 PM UTC+2, Michael Bayer wrote:
>
>
>
> On 9/16/15 6:46 AM, Mattias Lagergren wrote:
>
>
> The important part is the casting inside
Hi,
I have a table (variable_value) with a "value" column where I store a mix
of data (float, boolean, datetime) as strings. On a related table the type
is stored and now I'm trying to create a new calculated column
"casted_value" that casts the value column to the correct type in SQL (I'm
Hi guys,
I'm trying to retrieve modified (new, deleted and dirty) instances from the
session, before commit but after a flush.
Example:
# Update and create objects.
...
# This is fine and I have my dirty instances:
print session.dirty, session.new, session.deleted
session.flush()
# At
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