define(['backbone', 'models/User'],function(Backbone, User){ 
	var UserCourseList = Backbone.Collection.extend({
		model: User,
		search: '',
		sort_direction: 'asc',		
		sort_key : 'last_name',
        comparator: function(model1,model2){
			var _str1 = model1.get(this.sort_key);
			var _str2 = model2.get(this.sort_key);	
			if( this.sort_direction === 'asc' ){			
				return _str2.localeCompare(_str1);
			} else {							
				return _str1.localeCompare(_str2);
			}
        },
		url: function(){
		   return ajaxurl + '?action=angb_user_list&search='+this.search;
		}        
	});
	return UserCourseList;
});