public ViewResult Create()
{
var newLiterature = new LiteratureEditViewModel
{
TechnologyIds = new int[] { },
Title = "Title of the book",
Url = "#",
Authors = "Authors of the book",
Technologies = PopulateTechnologiesDropdown()
};
return(View("Edit", newLiterature));
}
public ActionResult Edit(LiteratureEditViewModel literatureVM)
{
if (ModelState.IsValid)
{
if (literatureVM == null)
{
return(RedirectToAction(nameof(Index)));
}
literatureVM.Technologies = PopulateTechnologiesDropdown();//productVM.Products przybiera to co zwraca dropdown
int?literatureID = literatureVM.LiteratureID;
//passing dropdown selected items to the collection
List <SelectListItem> selectedItems = literatureVM.Technologies.Where(p => literatureVM.TechnologyIds.Contains(int.Parse(p.Value))).ToList();
Literature literature;
//new literature
if (literatureID == 0)
{
literature = new Literature();
}
//edit literature
else
{
literature = repositoryLit.Literatures.FirstOrDefault(o => o.LiteratureID == literatureID);
}
repositoryLit.SaveLiterature(literature, literatureVM);
//remove all technologies for this literature to avoid duplicated keys
repositoryLitTech.RemoveLiters(literatureVM.LiteratureID);
//new tech list for literature
if (selectedItems != null)
{
//make new technology list for this literature
literature.LiteraturesTechnologies = new List <LiteratureTechnology>();
foreach (var item in selectedItems)
{
var literatureAdd = new LiteratureTechnology {
LiteratureID = literature.LiteratureID, TechnologyID = int.Parse(item.Value)
};
repositoryLitTech.NewPair(literatureAdd);
}
}
return(RedirectToAction(nameof(Index)));
}
else
{
literatureVM.Technologies = PopulateTechnologiesDropdown();
return(View(literatureVM));
}
}
public void SaveLiterature(Literature literature, LiteratureEditViewModel literatureVM)
{
{
//repo save
literature.Title = literatureVM.Title;
literature.Authors = literatureVM.Authors;
if (literatureVM.Url == null)
{
literature.Url = "#";
}
else
{
literature.Url = literatureVM.Url;
}
}
if (literatureVM.LiteratureID == 0)
{
_context.Literatures.Add(literature);
}
_context.SaveChanges();
}