Why does Glass Mapper return null values?

Question

I am using Glass V4. I have an MVC Web Area Project.

I installed Glass Mapper in the Main project (WebProject).

I am trying to do Glass Casting in my project.

 public class ContactController : SitecoreController
{
    private readonly ISitecoreContext _context;
    private IGlassHtml _glassHtml;

    public ContactController()
        : this(new SitecoreContext())
    {

    }
    public ContactController(ISitecoreContext context)
    {
        _context = context;
        _glassHtml = new GlassHtml(context);

    }

    // GET: Contact
    public ActionResult ContactUs()
    {
        var db = Sitecore.Context.Database;
        var datasource = db.GetItem(RenderingContext.Current.Rendering.DataSource);

        var ViewModel = new Models.ContactUs();
        ViewModel.Headerstring = datasource.Fields["Headerstring"].Value;
        ViewModel.Substring = datasource.Fields["Substring"].Value;
        ViewModel.Description = ((MultilistField)datasource.Fields["Description"]).GetItems().Select(s => s.Fields["Line"].Value).ToList<string>();

        return View(ViewModel);
    }

    public ActionResult ContactUsGlass()
    {
        var model = _context.GetCurrentItem<ContactUsGlassModel>();
        return View(model);
    }
}

I can get the value using the First Action method, but not with the second.

Model:

public class ContactUs
{
    public string Headerstring { get; set; }
    public string Substring { get; set; }
    public List<string> Description { get; set; }
}

Glass Model:

public class ContactUsGlassModel
{
    public virtual string Headerstring { get; set; }
    public virtual string Substring { get; set; }
}

I understand that I do not need to register my namespace in Glass V4.

Answer 1

You cannot use the method _context.GetCurrentItem. Use instead _context.GetItem:

public ActionResult ContactUsGlass()
{
    var model = context.GetItem<ContactUsGlassModel>(RenderingContext.Current.Rendering.DataSource);
    return View(model);
}

You do not want to get the model from yours Sitecore.Context.Item(which is used in the method GetCurrentItem). You want to get your model from the DataSource of the current rendering.

Answer 2

@Marek - . GetCurrentItem , Sitecore. , , , GetCurrentItem . Datasource , , Sitecore .

Answer 3

GlassController, GetLayoutItem(), . , sitecore , , TDS:)