func should be there but also you can use a lambda instead, or a def that
can even have imports in it.
On Jan 8, 2018 5:14 PM, "Jonathan Vanasco" wrote:
> I'm using declarative.
>
> I need to map a viewonly relationship that uses sqlalchemy.func.lower in
> the primaryjoin.
>
> `func` doesn't seem available in `ext/declarative/clsregistry.py` and
> can't be used in the string context. is that correct?
>
> i have a workaround of declaring the class, then mapping the relationship
> via python code. i'd like to make sure I'm doing this right and not
> missing another bit of the docs (with 99.9% of my issues have been).
>
> just to illustrate the above:
>
>
>
> class Table1(base):
> # this won't work"
> rel1 = sqlalchemy.orm.relationship(
> "Table2",
> primaryjoin="""sqlalchemy.func.lower(Table1.name)==foreign(
> sqlalchemy.func.lower(Table2.name))""",
> viewonly=True,
> )
>
> # this will work:
> Table1.rel1 = sqlalchemy.orm.relationship(
> Table2,
> primaryjoin=sqlalchemy.func.lower(Table1.name)== sqlalchemy.
> orm.foreign(sqlalchemy.func.lower(Table2.name)),
> viewonly=True,
> )
>
>
>
> --
> 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
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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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