ASP.NET MVC project filterattribute to a normal function

Question

I have an asp.net mvc project which is divided into projectlayers: Test has the controller which calls the taskproject. In task a function calls the database and returns the data. TestProject:

Homecontroller()
{
     public ActionResult Index()
    {
        List<Person> pers = PersonTask.getPersons();
         return View(pers);
    }
 }

TaskProject:

   public static List<Person> getPersons()
    {
        using (var context = new FilterTestEntities())
        {
            return context.People.OrderBy(p => p.PersonID).ToList();
        }
    }

I want to have a filter on the data i return to the controller. I know there is a FilterAttribute, but as far as I know this is only possible on an action function. Is it possible to put a filterAttribute on my getPersons() function. Like:

[PersonFilter]      
public static List<Person> getPersons()

Thanks.