filter the return collection for empty elements

#66

_src/js/main.coffee

@@ -33,6 +33,8 @@ class IGGY extends Backbone.Events
 		@view = new MainView( main: @, el: @$el, collection: @facets, results: @results, searchButton: options.searchButton, idx: IGGY_IDX++ )
 
 		@view.on "searchbutton", @triggerEvent
+
+		@nonEmptyResults = @results.sub( @_filterEmpty )
 		return
 
 	_prepareEl: ( el )=>
@@ -102,15 +104,29 @@ class IGGY extends Backbone.Events
 		_err.message = _msg
 		return _err
 
+	_filterEmpty: ( model )=>
+		_v = model.get( "value" )
+		if not _v?
+			return false
+		if _v.length <= 0
+			return false
+
+		return true
+
 	getQuery: =>
-		return @results
+		return @nonEmptyResults
 
 	triggerChange: =>
-		@trigger( "change", @results )
+		console.log @nonEmptyResults
+		setTimeout( =>
+			@trigger( "change", @nonEmptyResults )
+		, 0 )
 		return
 
 	triggerEvent: ( eventName )=>
-		@trigger( eventName, @results )
+		setTimeout( =>
+			@trigger( eventName, @nonEmptyResults )
+		, 0 )
 		return
 
 	_initErrors: =>

_src/js/models/results.coffee

@@ -5,7 +5,7 @@ class IggyResult extends Backbone.Model
 		name: null
 		value: null
 
-class IggyResults extends Backbone.Collection
+class IggyResults extends require( "./backbone_sub" )
 	model: IggyResult
 	initialize: ( mdls, opts )=>
 		if opts.modifyKey?.length