public static IQueryable <CustomersListDto> FilterItemsBy(
this IQueryable <CustomersListDto> customers, CustomesFiltersBy filterBy, string filterValue)
{
if (string.IsNullOrEmpty(filterValue))
{
return(customers);
}
switch (filterBy)
{
case CustomesFiltersBy.NoFilter:
return(customers);
case CustomesFiltersBy.ByFirstNames:
var filterFirstname = filterValue;
return(customers.Where(x => x.FisrtName.StartsWith(filterFirstname)));
case CustomesFiltersBy.ByLastNames:
var filterLastName = filterValue;
return(customers.Where(x => x.LastName.StartsWith(filterLastName)));
case CustomesFiltersBy.ByPhoneNumber:
var filterPhoneNumber = filterValue;
return(customers.Where(x => x.PhoneNumber.StartsWith(filterPhoneNumber)));
default:
throw new ArgumentOutOfRangeException
(nameof(filterBy), filterBy, null);
}
}
public IEnumerable <DropdownTuple> GetFilterDropDownValues(CustomesFiltersBy filterBy)
{
switch (filterBy)
{
case CustomesFiltersBy.NoFilter:
return(new List <DropdownTuple>());
case CustomesFiltersBy.ByFirstNames:
return(FormVotesDropDown());
case CustomesFiltersBy.ByLastNames:
var result = _context.Customers.Select(c => c.LastName)
.Select(c => new DropdownTuple
{
Value = c.ToString(),
Text = c.ToString()
});
return(result);
case CustomesFiltersBy.ByPhoneNumber:
result = _context.Customers.Select(c => c.PhoneNumber)
.Select(c => new DropdownTuple
{
Value = c.ToString(),
Text = c.ToString()
});
return(result);
default:
throw new ArgumentOutOfRangeException(nameof(filterBy), filterBy, null);
}
}
