POST Complex Object to ApiController Subclass

Question

I am working on an API method that should accept an Image model object, which has a property List<Comment> Comments. The Image POSTed from the mobile app works fine but if I include an array of Comment objects they aren't showing up on the instance of the Image. I'm not super great with C# so any help would be appreciated.

Image Class

public class Image
{
    public int? ImageId { get; set; }
    [Required]
    public string Image { get; set; }
    [Required]
    public string ContentType { get; set; }
    [Required]
    public string Filename { get; set; }
    [Required]
    public DateTime DateTaken { get; set; }
    [Required]
    public int UserId { get; set; }
    [Required]
    public int CompanyId { get; set; }
    [Required]
    public int LocationId { get; set; }
    public decimal? Lat { get; set; }
    public decimal? Long { get; set; }
    public List<ApiComment> Comments { get; set; }
}

Comment Class

public class ApiComment
{
    [Required]
    public string Comment { get; set; }
    [Required]
    public DateTime DateCreated { get; set; }
    [Required]
    public int UserId { get; set; }
}

Beginning of ImagesController

public class ImagesController : ApiController
 {
    [System.Web.Http.HttpPost]
    public ActionResult Post(Image image)

Included in the the POST body are valid comments. If I inspect the `Image` instance it shows an empty list. — CWitty, Jul 13 '15 at 14:25
Are you posting Json as your request body or in what format? — Oluwafemi, Jul 13 '15 at 14:37
Just a side note: `ActionResult` is for MVC, use `IHttpActionResult` for Web API. — Evan Mulawski, Jul 13 '15 at 14:40
Yea it is the request body coming from the iOS app and is the JSON — CWitty, Jul 13 '15 at 14:41

score 0 · Accepted Answer · answered Jul 13 '15 at 14:52

0

I believe there's something wrong with the request body of your request:

I tried this in fiddler:

{ "Comments" : [{ "Comment" : "Hello"}, {"Comment" : "World"}]}

And I got two counts for Comments in my WebAPI Action Method.

Check there are no typo error with the request object you are posting and the Json is valid.

answered Jul 13 '15 at 14:52

Oluwafemi

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The body looks like `Comments[][Comment]=Test&Comments[][DateCreated]=2015-07-13T14%3A56%3A53&Comments[][UserId]=105` So I am guessing the missing index in the `[]` brackets is what is wrong. – CWitty Jul 13 '15 at 14:59
Sorry the error seemed to be iOS side, the body was encoded using AFNetworking's AFHttpRequestSerialier and should have been AFJsonRequestSerializer. You post helped me figure that out though, thanks – CWitty Jul 13 '15 at 15:06

POST Complex Object to ApiController Subclass

1 Answers1