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POHow to create a strongly typed master page using a base controller in ASP.NET MVC
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  1. POHow to create a strongly typed master page using a base controller in ASP.NET MVC
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    copied!<p>Following the <a href="http://weblogs.asp.net/scottgu/archive/2009/03/10/free-asp-net-mvc-ebook-tutorial.aspx" rel="noreferrer">NerdDinners</a> example, I am interested in creating a strongly typed Master Page. In order to achieve this, I use a base controller which retrieves the data for the master page. All other controllers inherit this class. Similarly, I have <code>ViewModels</code> for the master page and any other views. The view <code>ViewModel</code> classes inherit from the master page's <code>ViewModel</code>.</p> <h3>Question</h3> <p>How should a child controller ensure that the master page's data is passed to the View without setting the properties of its <code>ViewModel</code> that pertain to the master page itself?</p> <p>My the master page will display a number of buttons, which are determined in an XML file, hence the <code>Buttons</code> class that I am populating.</p> <p><strong>MasterPage ViewModel Code Snippet</strong></p> <pre><code>using System.Collections.Generic; namespace Site1.Models { public class MasterViewModel { public List&lt;Button&gt; Buttons{set; get;} } } </code></pre> <p><strong>View <code>ViewModel</code></strong> </p> <pre><code>namespace Site1.Models { public class View1ViewModel : MasterViewModel { public SomeDataClass SomeData { get; set; } } } </code></pre> <h3>Base Controller</h3> <pre><code>using System.Collections.Generic; using System.Web.Mvc; using Site1.Models; namespace Site1.Controllers { public abstract class BaseController : Controller { protected MasterViewModel model = new MasterViewModel(); public BaseController() { model.Buttons = new List&lt;Button&gt;(); //populate the button classes (doesn't matter how) PopulateButtons(model.Buttons); } } } </code></pre> <p><strong>View's controller:</strong> </p> <pre><code>using System.Web.Mvc; namespace Site1.Controllers { public class View1Controller : BaseController { public ActionResult Index() { Models.View1ViewModel viewModel = new Models.View1ViewModel(); SomeDataClass viewData = new SomeDataClass() //populate data class (doesn't matter how) PopulateDataClass(viewData); viewModel.SomeData = viewData; //I WANT TO ELIMINATE THE FOLLOWING LINE! viewModel.Buttons = model.Buttons; return View("Index", viewModel); } } } </code></pre> <p>The master page inherits <code>System.Web.Mvc.ViewMasterPage&lt;Site1.Models.MasterViewModel&gt;</code>.</p> <p>The view inherits <code>System.Web.Mvc.ViewMasterPage&lt;Site1.Models.View1ViewModel&gt;</code>.</p>
 

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