Sending JSON object to Web API failure

Question

I am trying to send jQquery object through ajax to a Web API controller.

Here's my jquery code:

var CurrentOrder = [];
var lineItem = { 'rowid': '34', 'quantity': '4', 'comment': 'somecomment' ,
               'rowid': '22', 'quantity': '5', 'comment': 'somecomment1'};

CurrentOrder.push(lineItem);

$.ajax({
    type: 'PUT',
    data: JSON.stringify({ SessionCart: CurrentOrder }),
    contentType: 'application/json; charset=utf-8',
    url: '/api/Cart/UpdateCart/',
    //traditional: true,
    beforeSend: function () {
        res.container.append(res.loader);
    },
    success: function () {
        res.container.find(res.loader).remove();
        $('.loader').attr('style', 'display:none');
        GetSessionCart();
    },
    error: function () {
        res.container.find(res.loader).remove();
        $('.loader').attr('style', 'display:none');
        alert('Current Order could not be updated. Please Try again.')
    }
})

Here's my model:

 public class Cart
{
    public string rowid { get; set; }
    public string quantity { get; set; }
    public string comment { get; set; }

}

And the controller:

    [HttpPut, HttpDelete]
    [ActionName("UpdateCart")]
    public HttpResponseMessage UpdateCart([FromUri] List<Cart> SessionCart)
    {

       //do sth
    }

The problem is the controller gets hit but the parameter SessionCart count is always 0. I have tried not to stringify the object, using quotes to wrap the object, passing a single object and not an array and a bunch of other things. None of these worked. Any help would be much appreciated.

Darren Wainwright · Accepted Answer · 2016-09-27 19:03:24Z

1

[FromUri] should either not be there at all or change it to [FromBody] -

[FromUri] will be looking at the querystring for the data vs the PUT body

Also, it looks like you should be setting your data to:

data: JSON.stringify(CurrentOrder),

This, plus what Matteo1010 suggests.

answered Sep 27, 2016 at 19:03

Darren Wainwright

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1 Comment

ToneSwitch Over a year ago

You are a lifesaver. Thanks! the problem was [FromUri] & JSON.stringify. Have a good one :D

Matteo1010 · Accepted Answer · 2016-09-27 19:05:51Z

1

I think json is wrong:

var lineitem = { 'rowid': '34', 'quantity': '4', 'comment':     'somecomment'} ;
CurrentOrder.push(lineItem);
lineitem = { 'rowid': '22', 'quantity': '5', 'comment': 'somecomment1} ;
CurrentOrder.push(lineItem);



data: JSON.stringify(CurrentOrder),

answered Sep 27, 2016 at 19:05

Matteo1010

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