private IQueryable <Country> FilterCountries(IQueryable <Country> query, CountryFilter filter)
{
if (filter != null)
{
query = filter.FilterCountries(query);
}
return(query);
}
public async Task <IEnumerable <Country> > GetAllWithFilter(CountryFilter filter)
{
return(await FilterCountries(db.Countries, filter)
.OrderBy(c => c.Name)
.ToListAsync());
}