Angular-带http帖子的传递数组

Question

I am trying to pass a json array and a value with http post. The value was passed but the array not. The value of responsesList in the javascript controller is : "[{"correct":"false","answer":"a1"},{"correct":true,"answer":"a2"}]"

javascript controller

function setMultiQuestion(question, responses) 
{

var jsonData = angular.toJson(responses);
var responsesList = {'object':jsonData};;

$http.post(baseUrl + "Admin/insertMultiAnswers", { question: question, responsesList: responsesList })
.success(function (data, status, headers, config) {
})
.error(function (data, status, header, config) {
});
}

MVC Controller

[HttpPost]
public ActionResult insertMultiAnswers(MultiChoiceQuestionModel model)
{
try
{
    model.setMultiAnswer();
    Response.StatusCode = 200;
    return Content("Sucess");
}
catch (Exception ex)
{
    Response.StatusCode = 500;
    return Content("Fail");
}
}

MODEL

public class answerObj
{
public bool correct { get; set; }
public string answer { get; set; }
}

public class MultiChoiceQuestionModel
{
public string question { get; set; }
public List<answerObj> responsesList = new List<answerObj>();



public void setMultiAnswer()
{
using (ATLASEntities atlasEntity = new ATLASEntities())
{
    Console.Write(responsesList.Count);
}
}

Answer 1

angular.toJson(responses) 

serializes to string not to an object. You should just do

responsesList: responses

Answer 2

In order to be mapped to a list the object from the json needs to be an array.

So, if you change below

var responsesList = {'object':jsonData};;

to something like:

var responsesList = [{'correct':true,'answer':'Meow'}, {'correct':true,'answer':'Woof'}];

It will work.

Answer 3

I assume that you get plain array ( [] ) from responses and not array that is inside of string value ( "[]" ). Try this:

function setMultiQuestion(question, responses){

    var myObj = {};
    myObj = JSON.stringify({question: question, responsesList: responses});

    $http.post(baseUrl + "Admin/insertMultiAnswers", myObj)
    .success(function (data, status, headers, config) {
    })
    .error(function (data, status, header, config) {
    });
}

You might have to parse that string in your backend.