how to send array brackets in json nested objects in web api controller

Question

I am sending data to a rest API of a travel portal. According to their documentation, the json data must be in the following format

{
    \"EndUserIp\": \"192.16         


        

Answer 1

The API format means the the Segments property must be a collection of otherType (your model only has a single object). In addition the Sources property is also a collection of string.

Change you model to

public class SearchForFlight
{
    public SearchForFlight()
    {
        Segments = new List<otherType>();
        Sources = new List<string>();
    }
    ....
    public string PreferedLines { get; set; }
    public List<otherType> Segments { get; set; }
    [JsonIgnore]
    public IEnumerable<SelectListItem> FlightCabinClassList { get; set; }
    [JsonIgnore]
    public IEnumerable<SelectListItem> JourneyList { get; set; }
    public List<string> Sources { get; set; }
}

and then assuming your only wanting to edit one Segments and one Sources, then in the GET method, add one object to each collection

SearchForFlight model = new SearchForFlight();
model.Segments.Add(new otherType());
model.Sources.Add(string.Empty);
....
return View(model);

and in the view, use for loops to generate the html for the collections

@for(int i = 0; i < Model.Segments.Count; i++)
{
    @Html.LabelFor(m => m.Segments[i].Origin)
    @Html.TextBoxFor(m => m.Segments[i].Origin)
    @Html.ValidationMesageFor(m => m.Segments[i].Origin)
    .... // other properties of otherType
}

Note that this will generate id attributes such as id="Segments_0__Origin" so your script would need to be

Segments:
{
    Origin: $("#Segments_0__Origin").val(),
    Destination: $("#Segments_0__Destination").val(),
    ....

however there is no need to generate you javascript object manually, and your ajax can be simply

$.ajax({
    ....
    data: $('form').serialize(),
    ....

and do not set the contentType option so it uses the default application/x-www-form-urlencoded; charset=UTF-8