Posting array of JSON objects to MVC3 action method via jQuery ajax

Does the model binder not suport arrays of JSON objects? The code below works when sending a single JSON domain object as part of the ajax post. However, when sending an array of JSON domain objects, the action parameter is null.

     var domains = [{
                        DomainName: 'testt1',
                        Price: '19.99',
                        Available: true
                    }, {
                        DomainName: 'testt2',
                        Price: '15.99',
                        Available: false
                    }];

                $.ajax({
                    type: 'POST',
                    url: Url.BasketAddDomain,
                    dataType: "json",
                    data: domains,
                    success: function (basketHtml) {

                    },
                    error: function (a, b, c) {
                        alert('A problem ocurred');
                    }
            });

This is the action method:

public ActionResult AddDomain(IEnumerable<DomainBasketItemModel> domain)
{
    ...

Any ideas if it is possible to do this?

Answers

You need:

var domains = { domains: [... your elements ...]};

            $.ajax({
                type: 'post',
                url: 'Your-URI',
                data: JSON.stringify(domains),
                contentType: "application/json; charset=utf-8",
                traditional: true,
                success: function (data) {
                    ...
                }
            });

In general, check out the Request object in the debugger, you'll see what's being passed and get an idea of how to "speak" HTTP.

NOTE: Just found this out. The model binder chokes on nullable decimal properties like:

public decimal? latitude { get; set; }

So it won't bind that if you're posting to it with a json string that looks like this:

{"latitude":12.0}

But it WILL work if you post something like this:

{"latitude":"12.0"}

See: http://syper-blogger.blogspot.com/2011/07/hello-world.html

source:http://stackoverflow.com/questions/6031206/posting-array-of-json-objects-to-mvc3-action-method-via-jquery-ajax