Getting an error using Backbone.js DELETE with ASP.Net MVC. Everything else works though.

Question

I am able to successfully call Backbone's HTTP POST and PUT methods and have them link up to my server using Asp.Net MVC.

The problem is that when I call the HTTP DELETE using model.destroy() I get this error...

The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Delete(Int32)' in 'GSASF.Controllers.AdminController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters

Right before I call model.destroy() I logged the id to the console and it was correct. This is my code. *Note that my model doesn't have a field called id but instead a field called HoverId. The database table already existed so I have to make due.

 Delete: function(id) { if (id) { for (var i = this.collection.length - 1; i >= 0; i--) { var item = this.collection.at(i); if (item.get("HoverId") == id) alert("Item to be destroyed ID: " + item.get("id")); item.destroy(); }; } [ActionName("SpaceToolTipEdit")] [HttpDelete] public ActionResult Delete(int id) { var imageHover = sr.GetImageHoverById(id); if (imageHover != null) { sr.DeleteImageHover(imageHover); return new HttpStatusCodeResult(200); } return new EmptyResult(); }

Smith · Accepted Answer · 2013-04-08 18:09:37Z

Ok, I feel dumb now.

The solution was all to simple. I had originally set the url attribute to my /{Controller}/{SpaceToolTipEdit} url. I was supposed to set this to the urlRoot attribute instead.

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