I have a complex viewmodel
public class ScenarioCreationDTO
{
[Required]
[StringLength(500)]
public string Comments { get; set; }
[Required]
public IEnumerable<int> PriceLists { get; set; }
public IEnumerable<PriceListCurrencyDTO> Currencies { get; set; }
public IEnumerable<PriceListCountryDTO> Countries { get; set; }
}
Currencies has a compound key. How do I get binding to work for either checkBoxList or RadioButtons? Sometimes the user is allowed to select multiple, other times not.
Perhaps the problem was in the view?
<tbody>
@foreach (SelectListItem item in ViewBag.CurrencySelect)
{
<tr>
<td>
@if (ViewBag.MultipleCurrencies)
{
@Html.RadioButton("currencies", item.Value, item.Selected)
}
@Html.Label(item.Text)
</td>
</tr>
}
</tbody>
I did not find a RadioButtonList helper, nor a RadioButtonFor<T> that took multiple values.
Thanks to
Msdn magazine and
Buildstarted.com
I now have a custom model binder.
protected override void OnApplicationStarted()
{
base.OnApplicationStarted();
ModelBinders.Binders.Add(typeof(PriceListCurrencyDTO),new PriceListCurrencyBinder());
- global.asax.cs
public class PriceListCurrencyBinder:IModelBinder
{
public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
ValueProviderResult value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
var selected = value.AttemptedValue;
var result = Shared.SyntaxSugar.Helpers.Deserialize<PriceListCurrencyDTO>(selected);
return result;
}
}
var currencySelect=currencies.Select(c => new SelectListItem()
{
Text = c.CurrencyCode,
Value = Shared.SyntaxSugar.Helpers.Serialize(c),
Selected = priceListCurrenciesSelected != null && priceListCurrenciesSelected.Any(plc=>c.PriceListID==plc.PriceListID && c.CurrencyCode==plc.CurrencyCode)
}).ToArray();
ViewBag.CurrencySelect = currencySelect;
[HttpPost]
public virtual ActionResult Create(byte regionID, Int64 dealID, Model.ViewModel.Scenarios.ScenarioCreationDTO data){
//...
}
and finally the view
<tbody>
@foreach (SelectListItem item in ViewBag.CurrencySelect)
{ var i=-1; i++;
<tr>
<td>
@if (ViewBag.MultipleCurrencies)
{
@Html.RadioButton("currencies["+i+"]", item.Value, item.Selected)
}
@Html.Label(item.Text)
</td>
</tr>
}
</tbody>
