How to jsonify objects from sqlalchemy?

Question

I\'m using Flask, SQLAlchemy and javascript. I need to pass the results of my query to javascript in the json format, through AJAX, but I keep getting this error:

Answer 1

After some more fiddling around, I fixed it, here's how:

@app.route('/past/')
def get_past_clouds(user_id):
    if user_id:
        clouds = model_session.query(model.User).filter_by(id=user_id).first().clouds
        if clouds != "":
            clouds_d = {}
            for idx, cloud in enumerate(clouds):
                clouds_d[idx] = [ photo.path + photo.filename for photo in cloud.photos ]
            print "clouds: ", clouds_d
            return json.dumps(clouds_d)
    return None

It looks like SQLAlchemy objects are not serializable, so I had to get out exactly what I wanted from the objects it was returning.