saving objects + associations

var tags = tags_text.split(',');
var errors = [];

if (errors.length > 0) {
  
} else {
  var new_question = new db.Question({
    title: title,
    body: body,
    doNotify: doNotify,
    doNotifyEmail: doNotifyEmail
  });
  
  var savings = [],
      tagObjects = []
  
  savings.push({save: new_question})
  tags.forEach(function(_tag) {
    var tag = new db.Tag({ tag: tag.trim() })
    tagObjects.push(tag)
  })
  tagObjects.forEach(function(tag) {
    savings.push({save: tag})
  })
  Sequelize.chainQueries(savings, function() {
    new_question.setTags(tagObjects)
  })
  
}