Modifying toJSON for $firebaseArray and $firebaseObject in AngularFire

$firebaseArray.tojson.js

app.factory('$firebaseArrayEncrypted', function($firebaseArray, $firebaseUtils) {
  return $firebaseArray.extend({
    $$added: function(snap) {
      var rec = $firebaseArray.prototype.$$added.apply(this, arguments);
      rec.prototype.toJSON = function() {
        var data = $firebaseUtils.toJSON(this);
        
        // apply encryption or other manipulation of fields
        
        return data;
      }
    }
  });  
});

firebaseObject.tojson.js

app.factory('$firebaseObjectEncrypted', function($firebaseObject, $firebaseUtils) {
  return $firebaseObject.extend({
    toJSON: function() {
      var data = $firebaseUtils.toJSON(this); // just a utility to deal with $value, $priority, et al

      // apply encryption or other manipulation of fields

      return data;
    }
  });
});

Hello kato, I don't think that this work, since $firebaseUtils.toJSON() checks for a toJSON function and then calls it, which calls $firebaseUtils.toJSON() again, causing a infinite loop.