cloud-code.js

Parse.Cloud.beforeSave('rating', function(request, response) {

  /**
   * Ensure that the video is shortlisted
   */
  var videoId = request.object.get('video')
  var videoQuery = new Parse.Query('video');

  videoQuery.get(videoId).then(function(video) {
    if ( !video.get('shortlisted') ) {
      return response.error("Du kan kun stemme på shortlistede videoer")
    }

    console.log("video was shortlisted");
    var query = new Parse.Query('rating');
    return response.error("User ID from request: ", request.user.id);

    query.equalTo('userId', request.user.id);
    query.equalTo('video', videoId);

    // Ensure the same user doesn't vote multiple times
    query
      .count()
      .then(function(count) {
        if ( count < 2 ) {
          return response.success();
        } else {
          return response.error("Du kan kun stemme én gang per video");
        }
      }, function(error) {
        return response.error('Ups. Der gik et eller andet galt: ' + error);
      })
  }, function() {
    response.error('Videoen findes ikke')
  })

});