Facets needs to do a direct call to look up suggestions, so make it use

the same sync method as Solr.

@@ -149,12 +149,17 @@ define(function(require) {
             return this;
         },
         initialize: function(data, options) {
+            var solr = this;
             options = (options || {});
             this.set('options', this._options = new Backbone.Model({
                 faceting: !!options.faceting,
                 highlighting: !!options.highlighting,
                 showAll: !!options.showAll,
             }));
+            var facets = this.get('facets');
+            facets.sync = function sync() {
+                return solr.sync.apply(this, arguments);
+            };
             this._doSearchImmediately = _.bind(function(options) {
                 this.buildQueryParameters();
                 this.fetch(_.extend({}, options, {
@@ -195,7 +200,7 @@ define(function(require) {
             this.on('change:currentPage', function(model, value, options) {
                 this._doSearch(options);
             }, this);
-            this.get('facets').on('item-change', function(model, value, options) {
+            facets.on('item-change', function(model, value, options) {
                 this._doSearch(_.extend({}, options, {resetCurrentPage: true}));
             }, this);
             this.get('ordering').on('change:value', function(model, value, options) {