Are you referring to the sqlalchemy-utils JSONType (
https://github.com/kvesteri/sqlalchemy-utils)?  It doesn't look like it
supports querying at all, only saving Python dicts directly.

If you are using PostgreSQL and the native Json type, you might want to
check out:
https://www.compose.io/articles/using-json-extensions-in-postgresql-from-python-2/


On Tue, Mar 15, 2016 at 9:50 AM, 'Boncheff' via sqlalchemy <
[email protected]> wrote:

> We have a DB model that contains a 'foo' field which is JSONType
>
> Inside this we store the following data:
>
> foo =>    [{"apps": ["test_app"]}, {"tags": ["test_tag1", "test_tag2"]}]
>
> My question is, how can I, using session.query, select all items that have
> a *test_tag_1* as a tag inside the foo column?
>
> I tried*
> session.query(MyModel).filter(MyModel.foo[0]['tags'].in_('test_tag1')).all()*
> but this results in
>
> *** NotImplementedError: Operator 'getitem' is not supported on this
> expression
>
> Is what I am trying to achieve even possible?
>
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