database.js

var CampgroundReview = db.define("campground_reviews", {
  headline: String,
  body: String,
  rating: Number,
  campground_id: Number,
  updated_at: Date
}, {
  hooks: {
    beforeSave: function(next){
      this.updated_at = new Date();
      next();
    },
    beforeRemove: function(next){
      var details = {
        record_id: this.id,
        table_name: "campground_reviews"
      }
      DeletedRecord.create(details, next);
    }
  }
});