Having an issue understanding why NerdDinner MVC is returning an error

Question

So I am following ScottGu's NerdDinner tutorials, and am having some trouble wrapping my head around this error. I am trying to implement CRUD, so at first, while editing data, I started with this code:

        public ActionResult Edit(int id)
    {
        Dinner dinner = dinnerRepository.GetDinner(id);
        return View(dinner);
    }

which displays the Edit View properly, and gives me fields to edit my data. Now, when I continue on and my Edit action turns into this:

        [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Edit(int id, FormCollection formValues) 
    {
    Dinner dinner = dinnerRepository.GetDinner(id);
    UpdateModel(dinner);
    dinnerRepository.Save();
    return RedirectToAction("Details", new { id = dinner.DinnerID });
    }

I return a 404 error. Apparently the Edit view cannot be found. I am having an extremely hard time understanding why this is happening. I even tried to copy the exact syntax (which I don't like to do.) but no luck. Am I missing something that obvious?

EDIT: I happens as soon as I add this line:

[AcceptVerbs(HttpVerbs.Post)]

maybe that will help?

Answer 1

You need to have both methods in your controller.

The first method is for GET requests, requests which aren't the result of a form submission. These are the ones you see if you go /Edit/1 /Edit/2 etc.

The ActionResult Edit() method does not replace your first Edit() method but is an additional method which responses to POST requests which are the result of sending the form

Answer 2

You actually have two Edit actions, do you? One should be w/o the [AcceptVerbs] attribute and is used to display the initial Edit view, the other action accepts only POST calls and is used to turn whatever values were posted from the form into a model and save that in the data store.

From your wording it appears like instead of adding a second Edit action (method) you edited the old one.