javascript - sending JSON to google app engine datastore -

so i've been scouring interwebs , cant find works me. have simple html form need send via json app engine datastore.

html form:

<form method="get" name="vehicle-form" id="vehicle-form">             <input type="text" name="type" placeholder="vehicle type" requried>             <input type="text" name="make" placeholder="make" requried>             <input type="text" name="model" placeholder="model" requried>             <input type="text" name="year" placeholder="year" requried>             <button id="submit-btn">add</button> </form> 

javascript: edit: changed this- values going in null

var formdata = {};             $("#part-form").serializearray().map(function (x) { formdata[x.name] = x.value; });              //var par = document.getelementbyid("test2");             //par.innerhtml += "<p>";             //for (var in formdata) {             //    par.innerhtml += formdata[i] + "<br>";             //}             //par.innerhtml += "</p>";             var uristring = myurl;             $.ajax({                 url: uristring,                 type: "post",                 //data: json.stringify(formdata)                 data: { "type" : formdata[0], "quantity" : formdata[1], "cost" : formdata[2], "vehicle_id" : formdata[3] }             }); 

i doing on windows 8 phone, , success function doesn't execute, , no data added datastore.

here backend code post request

class addvehicle(webapp2.requesthandler): def post(self):     """creates vehicle entity      post vehicle variables:     vehicle_type = vehicle type - required     make = make - requried     model = model - required     year = year - required     """     new_vehicle = vehicle()     vehicle_type = self.request.get('type', default_value=none)     make = self.request.get('make', default_value=none)     model = self.request.get('model', default_value=none)     year = self.request.get('year', default_value=none)      # required info     new_vehicle.vehicle_type = vehicle_type     new_vehicle.make = make      new_vehicle.model = model      new_vehicle.year = year       self.response.write(new_vehicle)      # post data datastore     key = new_vehicle.put()     out = new_vehicle.to_dict()     self.response.write(json.dumps(out))     return 

this ndb model

class vehicle(ndb.model): vehicle_type = ndb.stringproperty(required=true) make = ndb.stringproperty(required=true) model = ndb.stringproperty(required=true) year = ndb.stringproperty(required=true) 

got work:

$.ajax({                 url: uristring,                 type: "post",                 contenttype: "application/x-www-form-urlencoded", //<--                 data: { type: vehicle_type, make: vehicle_make, model: vehicle_model, year: vehicle_year },                 success: function (result) {                     winjs.navigation.navigate("/pages/vehicleadd/vehicleadd.html");                 }             }); 

turns out needed send url encoded form data instead of json...