I'm using Drupal 7 with the FiveStar module to let users vote on a certain node type. When the user votes, I have a workflow rule that grants them some points to reward them for casting their vote.

The problem I'm running into is that if the user votes more than once on a given node, they are granted points again, each time they vote. There is currently no filter to check that they have already voted before awarding the points.

I could use some help building a workflow rule filter that checks to make sure the user has not already voted on the particular node.

Conceptually I would like to query the votingapi table for any records with the given node ID and given user ID and pass only if zero records are returned. But not sure how to do this in Drupal. Trying to avoid hard-coding a query too.

Thanks BH