Question

I’m trying to Post a List to my MVC Controller..

The Controller: // POST api/UserFollows

public HttpResponseMessage PostUserFollows(List<FollowItem> followItemList)
{
   //I'M GETTING NULL IN followItemList
   if(followItemList==null)
   {
      return Request.CreateResponse(HttpStatusCode.BadRequest);
   }
}

OUTPUT:

STATUS 400 Bad Request <-- Means I got null in followItemList
TIME 4025 ms
Cache-Control →no-cache
Connection →Close
Content-Length →0
Date →Tue, 29 Jan 2013 09:38:31 GMT
Expires →-1
Pragma →no-cache
Server →ASP.NET Development Server/10.0.0.0
X-AspNet-Version →4.0.30319

The FollowItem class

namespace Helpers.SubClasses
{
    public class FollowItem
    {
        public bool action;
        public long FollowsUserId;
    }
}

I tried a lot of request but none of them works.. I always get null!

THE POST METHOD:

function postFollowList() {
            $.ajax( {
            url: Request_Url + "api/UserFollows",
            type: 'post',
            data: {
                    {action: true, FollowsUserId: 123456777},
                    {action: true, FollowsUserId: 123456888}
            },
            dataType: 'json',
            success: function( data )
            {
                $('#newmovie').html("OK");
            },
            error: function (jqXHR, textStatus, err) 
            {
                $('#newmovie').html('Error: ' + err);
            }
             });

The requests: //As JSON – I’m Using POSTMAN

1.
    [
        {"action":"true","FollowsUserId":"123456777"}
    ]
2.
    [
        {action: true, FollowsUserId: 123456777},
        {action: true, FollowsUserId: 123456888}
    ]
3.
    {[
        {action: true, FollowsUserId: 123456777},
        {action: true, FollowsUserId: 123456888}
    ]}
4.
    {followItemList:[
        {action: true, FollowsUserId: 123456777},
        {action: true, FollowsUserId: 123456888}
    ]}

Example for null:

I tried a lot more..
Can anybody please help me with this?
Thanks!!!

EDIT:
The answer was that I sent application/xml in the content-type when I needed to send application/json.

Answer 1

The JSON doesn’t appear to be valid. Perhaps try this:

[
    {
        "action": true,
        "FollowsUserId": 123456777
    },
    {
        "action": true,
        "FollowsUserId": 123456888
    }
]

A good tool to check JSON validity is jsonlint.com.