public async Task Delete(int id)
{
var entity = await _context.Set <T>().FindAsync(id);
_context.Set <T>().Remove(entity);
await _context.SaveChangesAsync();
}
protected void UpdateCollection <ModelType, DBModelType>(LibraryDataContext dataContext, ICollection <ModelType> source, ICollection <DBModelType> destination)
where ModelType : class, Model.IIdRecord
where DBModelType : class, DB.IIdRecord
{
//removed items
foreach (var oldItem in destination.ToList())
{
if (!source.Any(x => x.Id == oldItem.Id))
{
destination.Remove(oldItem);
}
}
//added items
foreach (var newItem in source)
{
if (!destination.Any(x => x.Id == newItem.Id))
{
var toAdd = dataContext.Set <DBModelType>().FirstOrDefault(x => x.Id == newItem.Id);
if (toAdd != null)
{
destination.Add(toAdd);
}
}
}
}
protected void MapCollection <ModelType, DBModelType>(LibraryDataContext dataContext, ICollection <ModelType> source, ICollection <DBModelType> destination)
where DBModelType : class, DB.IIdRecord
where ModelType : class, Model.IIdRecord
{
destination.Clear();
foreach (var item in source)
{
destination.Add(dataContext.Set <DBModelType>().FirstOrDefault(x => x.Id == item.Id));
}
}
