JSON.stringify ignores nested object

Question

I'm currently working on an issue sending JSON data to My Controller.

I found out that when Passing an Object, which Contains a nested one, the nested object will be null. I can't figure out what I'm missing...

My serverside looks like this:

[HttpPost]
public ActionResult ApplyChanges(List<Change> pChanges)
{
    //the Issue occurs here in every object of pChanges:
    //IgnoreFlag was populated correctly, but the Detection Object is null...?
}

public class Change
{
  public Detection Detection { get; set; }
  public bool IgnoreFlag { get; set; }
}

My Clientside looks like this:

var data = [
  {
    "Detection": {
     "PropertyOld": 1,
     "PropertyNew": 2, 
    },
    "IgnoreFlag": true
  },
  {
    "Detection": {
     "PropertyOld": 3,
     "PropertyNew": 4, 
    },
    "IgnoreFlag": false
  }
]

$.ajax({
  type: "POST",
  url: "/Url/To/ApplyChanges",
  data: JSON.stringify({"pChanges": data}),
  contentType: "application/json",
  success: function (data, textStatus, jqXHR) {
    //do something here
});

Can someone help me to solve this issue?

Thanks for your reply. I tried it, but it doesn't work. Same result.. — Alan
– Alan, Commented Mar 20, 2016 at 15:04
Nothing is ignored when I JSON.stringify your object. jsfiddle.net/qz3vp6gx — user1106925
– user1106925, Commented Mar 20, 2016 at 15:15
@squint yes, I validated the json string myself on jslint.com before posting this question. Indeed, the JSON string is valid. That's exactly what I find weird about that issue... No Idea, what the reason that my mvc-controller ignores the nested object could be? — Alan
– Alan, Commented Mar 20, 2016 at 15:32
But you're saying that JSON.stringify is ignoring something. I'm just showing that it doesn't ignore anything. Based on the client-side code you provided, there's nothing wrong. Not sure what the server-side issue may be. — user1106925
– user1106925, Commented Mar 20, 2016 at 15:44

Anik Saha · Accepted Answer · 2016-03-20 17:46:20Z

1

use

JSON.stringify(data)

instead of using

JSON.stringify({"pChanges": data})

answered Mar 20, 2016 at 17:46

Anik Saha

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