How do you update multiple values in flask-sqlalchemy?

Question

How do you update multiple values?

predictions=Fixture_prediction.query\
   .filter_by(user_id=user_id)\
   .update(request.form['home_score'],request.form['away_score'])

This is the error I get:

ArgumentError: Valid strategies for session synchronization are False, 'evaluate' and 'fetch'

Answer 1

You're supposed to use a dictionary with name:value pairs:

query.update({'home_score': request.form['home_score'], 
              'away_score': request.form['away_score']})

However, keep in mind that this update will bypass all Python based cascading and will not trigger the before_update and after_update events.

Answer 2

So far I haven't seen any examples for a multiple field update. But if it's possible looks like you just need to identify which columns are being updated. Try this...

.update({"column1": request.form['home_score'], "column2" : request.form['away_score']})

Hope this helps!