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POMVC 3 Post of Viewmodel with Completex IEnumerable
 

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    <p>I have a complex class that is part of a property of a viewmodel. My viewmodel has a wine class property and a wine class has a ICollection property called CaseProductions. The CaseProduction class has several properties as well. </p> <p>On the create GET event, the NewWineViewModel is instantiated, then it runs a GetCaseProductionDefaults with create a list of CaseProduction classes that have some default values, but are mostly empty. </p> <p>Now, I originally used razor to do a foreach statement and just pop out my table the way I wanted it. But I've see around that doesn't work to bind this type of IEnumerable back to the viewmodel on POST. I've tried to use the below, but no dice. </p> <pre><code>EditorFor(m =&gt; m.Wine.CaseProductions) </code></pre> <p>I'm really looking for advise on what the best way to handle this is. Each wine will have a collection of caseproductions, and I want that to bind back to the wine within the viewmodel. Is their some way I can edit the ids of those elements in razor to make sure they bind? What's the best way to handle this one? </p> <p>viewmodel:</p> <pre><code> public class NewWineViewModel { public Wine Wine { get; set; } public VOAVIRequest VOAVIRequest { get; set; } public bool IsRequest { get; set; } public Dictionary&lt;int, int&gt; BottlesPerCase { get; set; } public SelectList VarTypes { get; set; } public SelectList Origins { get; set; } public SelectList Apps { get; set; } public SelectList Vintages { get; set; } public SelectList Importers { get; set; } } </code></pre> <p>case production class:</p> <pre><code>public class CaseProduction { public int CaseProductionID { get; set; } public int WineID { get; set; } public int CaseProductionSizeID { get; set; } public int CaseCount { get; set; } public int CountPerCase { get; set; } public virtual CaseProductionSize CaseProductionSize { get; set; } public virtual Wine Wine { get; set; } } </code></pre> <p>getting default case productions:</p> <pre><code>public List&lt;CaseProduction&gt; GetCaseProductionDefaults(vfContext db) { //creates blank list of all formats List&lt;CaseProduction&gt; cp = new List&lt;CaseProduction&gt;(); foreach (CaseProductionSize size in db.CaseProductionSizes) { int defaultBottlesPerCase = 1; switch ((CaseProductionSizeEnum)size.CaseProductionSizeID) { case CaseProductionSizeEnum.s187ml: defaultBottlesPerCase= 24; break; case CaseProductionSizeEnum.s375ml: defaultBottlesPerCase = 12; break; case CaseProductionSizeEnum.s500ml: defaultBottlesPerCase = 12; break; case CaseProductionSizeEnum.s750ml: defaultBottlesPerCase = 12; break; default: defaultBottlesPerCase = 1; break; } cp.Add(new CaseProduction { CaseProductionSizeID = size.CaseProductionSizeID, CountPerCase = defaultBottlesPerCase, CaseProductionSize = size, WineID = this.Wine.WineID }); } return cp; } </code></pre> <p>my razor code for the case production table:</p> <pre><code> @foreach (vf2.Models.CaseProduction cp in Model.Wine.CaseProductions) { &lt;tr&gt; &lt;td&gt;@cp.CaseProductionSize.Name &lt;/td&gt; &lt;td&gt;@Html.Raw(@Html.TextBoxFor(m =&gt; m.Wine.CaseProductions.Where(c =&gt; c.CaseProductionSizeID == cp.CaseProductionSizeID).First().CaseCount, new { @class = "caseCount", id = "txt" + cp.CaseProductionSize.Name }).ToString().Replace("CaseCount","txt" + cp.CaseProductionSize.Name)) &lt;/td&gt; &lt;td&gt; @Html.DropDownListFor(m =&gt; m.Wine.CaseProductions.Where(c =&gt; c.CaseProductionSizeID == cp.CaseProductionSizeID).First().CountPerCase, new SelectList(Model.BottlesPerCase, "Key", "Value", cp.CountPerCase), new { @class = "countPerCase", id = "ddl" + cp.CaseProductionSize.Name, name = "ddl" + cp.CaseProductionSize.Name}) &lt;/td&gt; &lt;td class="totalBottleCalc"&gt; &lt;/td&gt; &lt;/tr&gt; } </code></pre> <p>instantiation of my caseproduction collection:</p> <pre><code> public ActionResult Create(int ID = 0, int VintUpID = 0) { NewWineViewModel nw = new NewWineViewModel(); nw.Wine.CaseProductions = nw.GetCaseProductionDefaults(db); nw.BottlesPerCase = nw.GetBottlesPerCase(db); </code></pre>
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