Question

I think I’m overlooking something simple here, I can’t imagine this is impossible to do.

I want to filter by a datetime attribute and then order the result by a ranking integer attribute. When I try to do this:

query.filter("submitted >=" thisweek).order("ranking")

I get the following:

BadArgumentError: First ordering property must be the same as inequality filter property, if specified for this query; received ranking, expected submitted

Huh? What am I missing?

Thanks.

Answer 1

The datastore isn’t capable of ordering a query that contains an inequality by any property other than the one used in the inequality.

This can often be worked around by adding a property that can be filtered with an equality; in this case, it may be possible to have a BooleanProperty tracking whether an entity is from the current week, and update it for all entities at the end of each week.