The model I think you're referring to is at the bottom of the original
message:
public class CreateDashboardViewModel
{
public string Title { get; set; }
}
the json model being passed in is (You can rip out the jquery-fu and
just put in a string for the title to simplify things.
var model = {Title: "TheTitle" };
var json = {model: $.toJSON(model)};
I actually just got it working, I had to rip out the contenttype
specification in the ajax call ("contentType: 'application/json;
charset=utf-8'"). Before I did that the passed in data wasn't
appearing int he Context.Request.Params collection. Any idea why?
I wonder if that'll bite me in the rear in some obscure way...
-jt
On Jan 31, 2:28 pm, Mark Jensen <[email protected]> wrote:
> Hi
>
> maybe you should show us how the model as well as the the json object
> you try to bind to the model :)
>
> but I think you problem lies here
>
> Inner exception:
> ArgumentNullException
> Message:
> Value cannot be null.
> Parameter name: s
>
> could it be that you are trying to bind null value to a datatype that
> cant be null ?
>
> On Jan 31, 7:55 pm, James Thigpen <[email protected]> wrote:
>
> > I'm having trouble passing a JSON object to my action using the
> > JSONBinder. Binding the JSON info to my model fails spectacularly with
> > the following exception:
>
> > MonoRailException
> > Message:
> > Error building method arguments. Last param analyzed was model with
> > value ''
> > StackTrace:
> > at
> > Castle.MonoRail.Framework.SmartDispatcherController.BuildMethodArguments
> > (ParameterInfo[] parameters
> > , IRequest request, IDictionary`2 actionArgs)
> > at Castle.MonoRail.Framework.SmartDispatcherController.InvokeMethod
> > (MethodInfo method, IRequest request
> > , IDictionary`2 extraArgs)
> > at Castle.MonoRail.Framework.ActionMethodExecutorCompatible.Execute
> > (IEngineContext engineContext,
> > IController controller, IControllerContext context)
> > at Castle.MonoRail.Framework.Controller.RunActionAndRenderView()
>
> > Inner exception:
> > ArgumentNullException
> > Message:
> > Value cannot be null.
> > Parameter name: s
> > StackTrace:
> > at System.IO.StringReader..ctor(String s)
> > at Newtonsoft.Json.JavaScriptConvert.DeserializeObject(String
> > value, Type type, JsonConverter[] converters
> > )
> > at Newtonsoft.Json.JavaScriptConvert.DeserializeObject(String
> > value, Type type)
> > at
> > Castle.MonoRail.Framework.Services.NewtonsoftJSONSerializer.Deserialize
> > (String jsonString, Type
> > expectedType)
> > at Castle.MonoRail.Framework.JSONBinderAttribute.Bind
> > (IEngineContext context, IController controller
> > , IControllerContext controllerContext, ParameterInfo parameterInfo)
> > at
> > Castle.MonoRail.Framework.SmartDispatcherController.BuildMethodArguments
> > (ParameterInfo[] parameters
> > , IRequest request, IDictionary`2 actionArgs)
>
> > This is the javascript initiating the request:
>
> > $(function () {
> > $("#create-dashboard").click(function (e) {
> > e.preventDefault();
>
> > var model = {Title: $("#new-dashboard-title").val() };
> > var json = {model: $.toJSON(model)};
>
> > var callback = function (result) {
> > alert(result);
> > };
>
> > $.ajax({type:'POST', url: 'Create.ashx', dataType: 'json',
> > data: json,
> > contentType: 'application/json; charset=utf-8',
> > success: callback, error: function () { alert
> > ("Grrr."); }});
> > });
>
> > });
>
> > The action:
>
> > [return: JSONReturnBinder]
> > public DashboardCreatedViewModel Create([JSONBinder]
> > CreateDashboardViewModel model)
> > {
> > var dashboard = dashboardService.Create(CurrentUser,
> > model.Title);
>
> > return new DashboardCreatedViewModel(new DashboardSummary
> > (dashboard));
> > }
>
> > And the CreateDashboardViewModel:
>
> > public class CreateDashboardViewModel
> > {
> > public string Title { get; set; }
> > }
>
> > The only references I've been able to find to using the JSONBinder
> > have been really old and referenced assemblies which don't exist
> > anymore. I'm running off a not quite current version of castle trunk.
> > I'm pretty sure my problem lies in my own ignorance, and less in a
> > bug.
>
> > Any help is appreciated. I apologize for the length of the message as
> > well. My problem sits at that annoying nexus of multiple moving parts.
> > I tried to simplify as much as possible.
>
> > -jt
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