Backbone Comparator Snippet

bb-comparator.js

// This hidden gem was found at http://stackoverflow.com/questions/9865804/proper-way-to-sort-a-backbone-js-collection-on-the-fly (buried in the answers) 
// Following example above do in the view:

// Assign new comparator
this.collection.comparator = function( model ) {
    return model.get( 'lastname' );
}

// Resort collection
this.collection.sort();

// Sort differently
this.collection.comparator = function( model ) {
    return model.get( 'age' );
}

// Reverse Sort (Number only)
// Special thanks to http://stackoverflow.com/questions/5013819/reverse-sort-order-with-backbone-js
this.collection.comparator = function(model) {
  return -model.get("age"); // Note the minus!
};



this.collection.sort();