'Add filters to queryset filter
``PROJECT_ACTIVE`` and ``PROJECT_BUILT`` look for versions on projects,
``PROJECT_RECENT`` looks for projects with builds in the last year'

def queryset(self, request, queryset):

    if (self.value() == self.PROJECT_ACTIVE):
        return queryset.filter(projects__versions__active=True)
    if (self.value() == self.PROJECT_BUILT):
        return queryset.filter(projects__versions__built=True)
    if (self.value() == self.PROJECT_RECENT):
        recent_date = (datetime.today() - timedelta(days=365))
        return queryset.filter(projects__builds__date__gt=recent_date)
