Parse json object to viewmodel in asp.mvc 5

Question

I have a JSON object:

{ "Questions": { "Id": "3a19f538-0cf6-e311-93f5-000c2948090b", "Question": "wedwe", "Answer": "4" }, "items": ["3a19f538-0cf6-e311-93f5-000c2948090b"]},

And i'm trying to send it to MVC controler action:

    $.ajax({
    type: "POST",
    url: url,
    data: { "Questions": { "Id": "3a19f538-0cf6-e311-93f5-000c2948090b", "Question": "wedwe", "Answer": "4" }, "items": ["3a19f538-0cf6-e311-93f5-000c2948090b"]},
    dataType: 'json',
    traditional: true,
}).done(AprovingResponse);

But in my action:

[POST]
public JsonResult AddFeedback(TestModel model)
{
    [...]
}

Not whole model is filled:

    public class TestModel
    {
        public List<Guid> items { get; set; }
        public List<ViewModelQuestion> Questions { get; set; }
    }

    public class ViewModelQuestion
    {
        public Guid Id { get; set; }
        public string Question { get; set; }
        public string Answer { get; set; }
    }

Only item list is filled, Questions list contains 0 elements

enter image description here

I cannot find source of this problem. Can You help me?

--EDIT--

When i changed json to mach object collection, there is no diffrence:

data: { "Questions": [{ "Id": "3a19f538-0cf6-e311-93f5-000c2948090b", "Question": "wedwe", "Answer": "4" }, { "Id": "3a19f538-0cf6-e311-93f5-000c2948090b", "Question": "wedwe", "Answer": "4" }], "items": ["3a19f538-0cf6-e311-93f5-000c2948090b", "3a19f538-0cf6-e311-93f5-000c2948090b"] },

enter image description here

user2160375 · Accepted Answer · 2014-07-17 08:08:44Z

2

I think that your JSON object is not suitable to a class. I think rather should be:

{ "Questions": [{ "Id": "3a19f538-0cf6-e311-93f5-000c2948090b", "Question": "wedwe", "Answer": "4" }], "items": ["3a19f538-0cf6-e311-93f5-000c2948090b"]}

In your JSON Questions property is single JSON object (with fields Id, Question, Answer), but in your view model you are expecting a collection of objects.

answered Jul 17, 2014 at 8:08

user2160375

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2 Comments

Thaven Over a year ago

I was trying also this option - no difference

user2160375 Over a year ago

@Thaven try

data: JSON.stringify({ "Questions": [{ "Id": "3a19f538-0cf6-e311-93f5-000c2948090b", "Question": "wedwe", "Answer": "4" }], "items": ["3a19f538-0cf6-e311-93f5-000c2948090b"]})

. I'm not sure if it will help, but I think it's worth of trying. There could be a problem with content-type in your post. Try to define it in a full way: contentType: 'application/json; charset=utf-8'.

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