Question

I am currently working in ASP.NET MVC 4 while using the entity framework. I’ve never worked with MVC before, and have build a project with the following layers:

• GUI (Models,Views, Controllers,…)
• DAL (entity database and Repository + IRepository)
• BL (with my queries)
• COMMON
• WCF
• TESTING

Now, I’m trying to write a query in my BL which uses a model from my GUI-layer. As you can’t simply reference to the GUI, I don’t really know what to do here.

Here’s the code from what I’m trying to to:

In my BL:

public static List<PSNAdres> GetAdres(IZoekRepository repo)
{
    List<PSNAdres> lijstTypes = (from t in repo.PSNAdres
                      select new PSNAdres {t.Gemeente, t.Straat, t.Postcode}).ToList(); 

    return lijstTypes;
}

As I said: I am new to MVC. This layer-lay-out is what our MVC-specialist has told us to use as this is how he works.

Answer 1

I am not sure what you ask for, but here is my answer. Simple scenario for presenting address list:

View models:

public class AddressListViewModel 
{
    public List<AddressViewModel> AddressList { get; set; }
    public bool CanAdd { get; set; }
}

public class AddressViewModel
{
    public string Country { get; set; }
    public string City { get; set; }
    public string Street { get; set; }
    public bool CanEdit { get; set; }
    public bool CanDelete { get; set; }
}

BL:

public static List<Address> GetAddressList()//Doesn't take repository here, repositories are injected in constructor
{
    return adresRepo.PSNAdres.ToList(); 
}

Controller

public class AddressController : BaseController
{
    public ActionResult List()
    {
        var addressList = blObject.GetAddressList();
        var model = new AddressListViewModel();
        model.AddressList = addressList.Select(a => 
            new AddressViewModel 
            {
                Country = a.Country.Name,
                City = a.City,
                Street = a.Street,
                CanDelete = ...check user access here...,
                CanEdit = ...check user access here...
            });

        model.CanAdd = ...check user access here...

        return View(model);
    }
}