public IActionResult Index()
{
var listFormations = _repository.GetFormations(4);
var vm = new List <DetailFormationViewModel>();
foreach (var f in listFormations)
{
vm.Add(
new DetailFormationViewModel
{
Formation = f,
NoteMoyenne = f.Avis.Select(a => a.Note)
.DefaultIfEmpty(0).Average()
});
}
return(View(vm));
}