I want read returned value from this method:
public ActionResult ClientIsBlocked(int? clientId)
{
if (!clientId.HasValue)
return Json(null);
bool isBlocked = false;
try
{
isBlocked = this.clientsProvider.GetClientById(clientId.Value).IsBlocked;
}
catch
{
// logg
}
return Json(isBlocked);
}
in java script in my view. It should be async/ajax. How to do that?
It is my js code in view.
function isBlocked(id) {
$.ajax({
contentType: "application/json; charset=utf-8",
dataType: "json",
type: "GET",
url: '#Url.Action("ClientIsBlocked", "CustomerManagement", new { Area = "CustomerManagement" })',
data: JSON.stringify({ 'clientId': id }),
success: function(data) {
if(!data.success) {
}
}
})
In your action change :
return Json(isBlocked);
to:
return Json(isBlocked,JsonRequestBehavior.AllowGet);
otherwise your ajax may fail throwing exception:
Server Error in '/' Application.
This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet.
and in js in success callback:
success: function(data) {
alert(data); // data is the bool that is returned by action
}
Related
I have this code on my JavaScript file:
temp="string";
var myJson = JSON.stringify(temp);
$.ajax(
{
url: '/MemoryGame/updateStatus',
type: 'POST',
contentType: "application/json; charset=utf-8",
dataType: "json",
data: myJson,
success: function (response) {
alert("success");
if (response == 'Okay') {
checkStatus(temp.myID);
}
else {
ConnectionChanged();
}
},
error: function (errorThrown) {
console.log(errorThrown);
ConnectionChanged();
}
});
And this controller:
[HttpPost]
public string updateStatus(string updatedJson)
{
var Player = JsonConvert.DeserializeObject<GameDataClass>(updatedJson);
var Opponent = JsonConvert.DeserializeObject<GameDataClass>(System.IO.File.ReadAllText(System.IO.Path.Combine(_env.WebRootPath, Player.OpponentID + ".json")));
... }
I tried to change $.ajax to $.post method, also changed
public string updateStatus
to
public JsonResult updatedStatus
But neither of this didn't work. myJson on javascript contain data but when it reaches controller updatedJson is empty. I've never had this kind of experience so I'm using this code from another project and it works very well there. So can somebody suggest me what I'm doing wrong?
temp="string";
// (0)
var myJson = JSON.stringify(temp);
$.ajax(
{
url: '/MemoryGame/updateStatus?updatedJson=' + temp, // (1)
type: 'POST',
contentType: "application/json; charset=utf-8",
dataType: "json",
data: '', // (2)
success: function (response) {
alert("success");
if (response == 'Okay') {
checkStatus(response.myID);
}
else {
ConnectionChanged();
}
},
error: function (errorThrown) {
ConnectionChanged();
}
});
Or if this does not have to be passed as a parameter, then do the following:
(0) var formData = new FormData(); formData.append('updatedJson', temp);
(1) url: '/MemoryGame/updateStatus',
(2) data: formData,
$.ajax is a fonction from the jQuery library, does your project include it ?
You can also check the Javascript console of your browser to see if it contains errors. On Firefox and Chrome you can access it by pressing F12.
I have the following AJAX call, simplified to try and pin point the problem:
$('#userUpdateForm').submit(function (e) {
$.ajax({
type: "POST",
url: '#Url.Action("submitForm", "Home")',
data: JSON.stringify({
'blue': window.glbBlue,
'eg2': 'eg3'
}),
contentType: "application/json; charset=utf-8",
success: function (result) {
alert("Success");
},
error: function (result) {
alert("A problem occured when submitting the form.");
}
});
e.preventDefault();
});
This calls into the following method:
[HttpPost]
public ActionResult submitForm(string json)
{
System.Diagnostics.Debug.WriteLine("made it here");
var check = System.Web.Helpers.Json.Decode(json);
System.Diagnostics.Debug.WriteLine(check);
System.Diagnostics.Debug.WriteLine(check.glbBlue);
return View();
}
However, the JSON the controller receives is null. Why does this happen? I can see in the browser that there is a request payload, with the values I'd expect. 'Window.glbBlue' is a global value, which I also know has been set properly as alerts were used to check its value.
you send data
data: JSON.stringify({
'blue': window.glbBlue,
'eg2': 'eg3'
})
means your action receive two parameter blue and eg2 but you received only one parameter json which is not supplied. For this reason json is null.
you can change public ActionResult submitForm(string json) {} To public ActionResult submitForm(string blue,string eg2) {}.
OR
data: JSON.stringify({json: "something" })
I have an ajax call that requests data from an MVC controller method.
I am returning a Json result from the controller.
Ajax request completes, but the data returned is undefined.Ajax Call
var param = {
"username": uname,
"password": pass
};
var serviceURL = "/Account/CheckUser";
var req = $.ajax({
url: serviceURL,
type: "POST",
data: JSON.stringify(param),
contentType: "application/json",
complete: successFunc,
error: errorFunc
});
function successFunc(data) {
if (data.exists == true) {
console.log("Completed : " + data.exists);
} else {
console.log("Failed : " + data.exists);
}
}
Controller Method
[HttpPost]
public JsonResult CheckUser(string uname, string pass)
{
Boolean cont = true;
return Json(new { exists = cont });
}
Can anyone tell me why exists returns as undefined? UPDATE
As suggested below, I wrote the data to the console, and it seems it's returning an empty string. So I guess the question should be more 'Why is the data returning empty?
The function you specify via the complete option doesn't receive the data (for good reason: it's called even if there is no data, because there was an error). Change complete: to success:.
var req = $.ajax({
url: serviceURL,
type: "POST",
data: JSON.stringify(param),
contentType: "application/json",
success: successFunc, // <=== Here
error: errorFunc
});
i create a web method and now i'm calling this in my java script file but it give an path error,it is not able to find path what i'm giving ..
Web method code is :
[System.Web.Services.WebMethod]
public static int ItemCount(string itemId)
{
int val = 0;
Item itm = Sitecore.Context.Database.GetItem(itemId);
val = itm.Children.Count;
return val;
}
java script function calling like as:
function GetItemCount(itemId) {
var funRes = "";
debugger;
try {
if (itemId != null) {
jQuery.ajax({
cache: false,
type: "POST",
contentType: "application/json; charset=utf-8",
url: "/Views/GetItem.aspx/ItemCount",
data: { itemId: itemId },
dataType: "json",
async: false,
success: function (data) {
funRes = data.result;
},
error: function(err) {
alert(err.responseText);
}
});
}
} catch (ex) {
alert(ex.message);
}
return funRes;}
while i'm giving exact path for the C# method class but it's not working give an error on console, can anyone suggest me what i'm missing here..
There are few rules for ajax to work with asp.net.
Your WebMethod should be public and static.
If your WebMethod expects some parameter(s) than these parameter(s) must be passed as data in ajax.
Name of parameter(s) should be same in WebMethod and in data part of ajax.
Data passed from ajax should be in json string.For this you can use JSON.stringify or you will have to surround the values of parameter(s) in quotes.
Please check the below sample ajax call
function CallAjax()
{
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "Default.aspx/CallAjax",
data: JSON.stringify({ name: "Mairaj", value: "12" }),
dataType: "json",
async: false,
success: function (data) {
//your code
},
error: function (err) {
alert(err.responseText);
}
});
}
[WebMethod]
public static List<string> CallAjax(string name,int value)
{
List<string> list = new List<string>();
try
{
list.Add("Mairaj");
list.Add("Ahmad");
list.Add("Minhas");
}
catch (Exception ex)
{
}
return list;
}
EDIT
If you use GET in ajax than you need to enable your webmethod to be called from GET request. Add [System.Web.Script.Services.ScriptMethod(UseHttpGet = true)] on top of WebMetod
[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod(UseHttpGet = true)]
public static int ItemCount()
Just Modify the javascript function as below
function GetItemCount(itemId) {
var funRes = "";
debugger;
try {
if (itemId != null) {
jQuery.ajax({
type: "GET",
url: "/Views/GetItem.aspx",
data: 'itemID=' + itemId,
contentType: "application/html",
dataType: "html",
success: function (response) {
funRes= response.result;
}
});
}
} catch (ex) {
alert(ex.message);
}
return funRes;
}
I am not sure it is a solution for every question subject which web method not fire. But I discovered today when there is ' char in the string. Web Method not firing.
I have the following controller method:
public JsonResult CreateGroup(String GroupName)
{
ApplicationUser user;
var userName = User.Identity.Name;
using (DAL.GDContext context = new DAL.GDContext())
{
user = context.Users.FirstOrDefault(u => u.UserName == userName);
if (user != null)
{
var group = new Group();
group.GroupName = GroupName;
group.Members.Add(user);
context.Groups.Add(group);
context.SaveChanges();
}
}
string result = userName;
return Json(result, JsonRequestBehavior.AllowGet);
}
with the following ajax call:
$(function () {
$('#CreateGroup').on("click", function () {
var groupName = $('#groupname').val();
if (groupName != '') {
$.ajax({
url: '#Url.Action("CreateGroup","AjaxMethods")',
type: "POST",
data: JSON.stringify({ 'GroupName': groupName }),
dataType: "json",
cache: false,
contentType: "application/json; charset=utf-8",
success: function (data) {
alert("success");
CreateGroup(data);
},
error: function () {
alert("An error has occured!!!");
}
});
}
});
The CreateGroup function fails saying "Uncaught ReferenceError: data is not defined"
Do i have to use another Json request - type post - to get the username?
you can do the call without using JSON.stringify. Also your controller method has a cache attribute that may yield more control. Personally, I would use the controller cache control. You are probably getting a cached version of the controller call prior to returning data.
[OutputCache(NoStore = true, Duration = 0)]
public ActionResult CreateGroup(string GroupName)
$.ajax({
url: '#Url.Action("CreateGroup","AjaxMethods")',
type: "POST",
data: { 'GroupName': groupName },
dataType: "json",
traditional: true,
success: function (data, status, xhr ) {
alert("success");
CreateGroup(data);
},
error: function () {
alert("An error has occured!!!");
}
});
NOTE: Update success callback.