title: requested unknown parameter for "_id.$oid"
body: <p>I'm trying to add new student data in mongodb using jQuery and datatables. When I click "Submit" button this error shows in alert box "requested unknown parameter for "_id.$oid for row 1 column 0".
  Here is my jQuery code:</p>
  
  <pre><code>  $("#btnSubmit").on("click", function(e){
  e.preventDefault();
  var objc = {
    Full_Name: $("#fullName").val(), // get value from textbox
    Degree: $("#programDegree").val(), // get value from textbox
    Session: $("#programSession").val(), // get value from textbox
    edit: "Edit",
    del: "Delete"
    };
  $.ajax({
      type: 'POST',
      url: "https://api.mongolab.com/api/1/databases/mydb/collections/students?apiKey=ftIHhADklaeFUeTw4YzKZdlb_MWQYfGO",
      data: JSON.stringify(objc),
      contentType: "application/json; charset=utf-8",
      success: function(result){
        var oID = result._id.$oid;
        // console.log(oID);
        table.row.add( [
          oID,
          result.Full_Name,
          result.Degree,
          result.Session,
          result.edit,
          result.del
       ] ).draw();
    },
    error:function(res){
      console.log("Bad thing happend! " + res.statusText);
    }
  });
  $('#myModalNorm').modal('toggle');
  $('#formID').trigger("reset");
  </code></pre>
  
  <p>and This is the object which I got in return of ajax request.</p>
  
  <pre><code>Object {Full_Name: "Sufian", Degree: "CS", Session: "2008-2012", edit: "Edit", del: "Delete"…}
  Degree: "CS"
  Full_Name: "Sufian"
  Session: "2008-2012"
  _id: Object $oid: "56f39a62e4b0b7299e113da5"
  __proto__: Object
  del: "Delete"
  edit: "Edit"
  </code></pre>
  
  <p>Thanks in advance.</p>