controller responsibility

Question

I have my Model Bank

public class Banco {
   public int Id {get;set;}
   public string Nome {get;set;}
}

and my model Contabancaria

public class ContaBancaria 
{
  public int Id{get;set;}
  public string Nome {get;set;}
  public Banco Banco {get;set;}
}

Let’s see, for each of them I’ll have my controller

BancoController
ContaBancariaController

So I have a "Newbank" view, it’s part of it and all of your Insert/Edit/Delete actions are from my Account Controller. But in it I have a combo with list of banks

Whose responsibility it is to fetch and send me this information from the bank to this view of mine?

From Bancocontroller for having sole responsibility and when necessary call his method to return, or in Contabancariacontroller because these data are his, he have the role of listing and sending?

I don’t know if it’s clear, it’s an example that can happen, but there can also be more than one dependency for example...

Answer 1

To solve this kind of question I usually create a layer of data access (Dal) and create in it the features that access data.

Following this model, we would have your classBancoDAO (Data Access Object) providing database data relating to the desired information relating to the model Banco, that can be easily consumed by the view.

If we wanted to make this data available on a ViewBag, we could do so:

public ActionResult Index()
{
    ViewBag.Bancos = new BancoDAO().ListarBancos(); // Busca os dados dos bancos

    return View();
}