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POMVC Razor WebGrid Nullable Complex Types
 

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  1. POMVC Razor WebGrid Nullable Complex Types
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    <p>I have an entity called Lookup who has a complex Type Description with two string English and French. There has arise a time where no value will be store into the lookup. Now other entities have lookups as properties so we could have foo.Lookup.Description.English for example.</p> <p>I'm trying to use a Web Grid to display the information being selected.</p> <p>Originally my controller looked like</p> <pre><code> public ViewResult Index() { var foos = db.Foos; return View(foo.ToList()); } </code></pre> <p>and my view looked like</p> <pre><code>@model IEnumerable&lt;Foo&gt; @{ ViewBag.Title = "Index"; } &lt;h2&gt;Stay Manager&lt;/h2&gt; @{ var grid = new WebGrid(Model, defaultSort: "sortMe", rowsPerPage: 3); grid.GetHtml(htmlAttributes: new { id = "DataTable" }); } @grid.GetHtml(columns: grid.Columns( grid.Column("Lookup.Description.English", "Column Header") )) </code></pre> <p>My issue is that Lookup can at times be null and ill will get an error saying the the Column Lookup.Description.English does not exist.</p> <p>I found a solution but not a very elegant one and was hoping that there was a better a way. My solution was to change my controller action to</p> <pre><code> public ViewResult Index() { var foos = db.Foos; foreach (Foo currentFoo in Foos.Where(s =&gt; s.Lookup == null)) { Foo.Lookup = new Lookup(); Foo.Lookup.Description.English = ""; Foo.Lookup.Description.French = ""; } return View(foos.ToList()); } </code></pre> <p>Any suggestions on how to get the Web Grid to work better with null-able complex types?</p>
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