public async Task <int> AddWorkshopAsync(WorkshopDto workshopDto)
{
if (workshopDto == null)
{
throw new ArgumentNullException($"Argument {nameof(workshopDto)} can't be null!");
}
int id = context.Set <Workshop>().Add(workshopDto.ToWorkshop()).Id;
var students = await context.Set <User>().Where(u => u.GroupId == workshopDto.GroupId).ToListAsync();
foreach (var student in students)
{
context.Set <Attendance>().Add(new Attendance()
{
WorkshopId = workshopDto.Id,
StudentId = student.Id,
IsAttended = false
});
}
await context.SaveChangesAsync();
return(id);
}
public async Task AddWorkshopAsync(WorkshopDto workshopDto)
{
if (workshopDto == null)
{
throw new ArgumentException();
}
context.Workshops.Add(workshopDto.ToWorkshop());
await context.SaveChangesAsync();
}