public async Task <ListViewModel <GroupViewModel> > GetGroupsByFilterAsync(string name, int?skipCount, int?takeCount, bool isOrderByDescending)
{
Expression <Func <Group, bool> > predicate = null;
if (!string.IsNullOrEmpty(name))
{
predicate = x => x.Name.ToLower().Contains(name.Trim().ToLower());
}
var groupsCount = await _repository.CountAsync(predicate);
var groupsList = await _repository.ListAsync(predicate : predicate,
orderBy : x => x.Name,
isOrderByDescending : isOrderByDescending,
skipCount : skipCount,
takeCount : takeCount,
(gr) => gr.StudentGroups);
var groupViewList = groupsList.Select(x => new GroupViewModel(x.Id, x.Name, x.StudentGroups.Count));
return(new ListViewModel <GroupViewModel>(skipCount, takeCount, groupsCount, groupViewList));
}
