I want to access view data In Java script in following code
public virtual ActionResult Edit(MyModel _MyModel)
{
//some Code
if (true..)
{
ViewData["Messages"] = "Data Updated Sucessfully";
}
else
{
ViewData["Messages"] = "you cannot Updated data";
}
return View();
}
In javascript
function SaveData() {
$("#btnSave").click(function () {
// $('#divLoadImage').show();
// $('#divOverlay').show();
// debugger;
$.ajax({
type: "POST",
url: "Admin/Edit/",
data: "",
complete: function () {
alert(ViewData["Messages"]);
}
});
});
}
it give me no value in alert..
You need to encode it using for example the JavaScriptSerializer class:
function SaveData() {
$("#btnSave").click(function () {
$.ajax({
type: "POST",
url: "Admin/Edit/",
data: "",
complete: function () {
alert(#Html.Raw(new JavaScriptSerializer().Serialize(ViewData["Messages"])));
}
});
});
}
or use simple quotes but be careful as this might break if the message contains quote so I wouldn't recommend you this:
alert('#ViewData["Messages"]');
Related
Trying to be more consistent with HTTP verbs, I'm trying to call a delete Handler on a Razor Page via AJAX;
Here's my AJAX code, followed by the C# code on my page :
return new Promise(function (resolve: any, reject: any) {
let ajaxConfig: JQuery.UrlAjaxSettings =
{
type: "DELETE",
url: url,
data: JSON.stringify(myData),
dataType: "json",
contentType: "application/json",
success: function (data) { resolve(data); },
error: function (data) { reject(data); }
};
$.ajax(ajaxConfig);
});
my handler on my cshtml page :
public IActionResult OnDeleteSupprimerEntite(int idEntite, string infoCmpl)
{
// my code
}
which never reaches ... getting a bad request instead !
When I switch to a 'GET' - both the type of the ajax request and the name of my handler function ( OnGetSupprimerEntite ) - it does work like a charm.
Any ideas ? Thanks !
Short answer: The 400 bad request indicates the request doesn't fulfill the server side's needs.
Firstly, your server is expecting a form by;
public IActionResult OnDeleteSupprimerEntite(int idEntite, string infoCmpl)
{
// my code
}
However, you're sending the payload in application/json format.
Secondly, when you sending a form data, don't forget to add a csrf token:
#inject Microsoft.AspNetCore.Antiforgery.IAntiforgery Xsrf
<script>
function deleteSupprimerEntite(myData){
var url = "Index?handler=SupprimerEntite";
return new Promise(function (resolve, reject) {
let ajaxConfig = {
type: "DELETE",
url: url,
data: myData ,
success: function (data) { resolve(data); },
error: function (data) { reject(data); }
};
$.ajax(ajaxConfig);
})
}
document.querySelector("#testbtn").addEventListener("click",function(e){
var myData ={
idEntite:1,
infoCmpl:"abc",
__RequestVerificationToken: "#(Xsrf.GetAndStoreTokens(HttpContext).RequestToken)",
};
deleteSupprimerEntite(myData);
});
</script>
A Working Demo:
Finally, in case you want to send in json format, you could change the server side Handler to:
public class MyModel {
public int idEntite {get;set;}
public string infoCmpl{get;set;}
}
public IActionResult OnDeleteSupprimerEntite([FromBody]MyModel xmodel)
{
return new JsonResult(xmodel);
}
And the js code should be :
function deleteSupprimerEntiteInJson(myData){
var url = "Index?handler=SupprimerEntite";
return new Promise(function (resolve, reject) {
let ajaxConfig = {
type: "DELETE",
url: url,
data: JSON.stringify(myData) ,
contentType:"application/json",
headers:{
"RequestVerificationToken": "#(Xsrf.GetAndStoreTokens(HttpContext).RequestToken)",
},
success: function (data) { resolve(data); },
error: function (data) { reject(data); }
};
$.ajax(ajaxConfig);
})
}
document.querySelector("#testbtn").addEventListener("click",function(e){
var myData ={
idEntite:1,
infoCmpl:"abc",
};
deleteSupprimerEntiteInJson(myData);
});
We are trying to make a Ajax request to our Core Web API and get the data Json result back to the Controller for further processing, Which include Deserialization of the Json object result, Ajax request is working fine and we are able to get the required Json data in data.
Can anyone here please advise the changes or the alternatives to achieve this?
View (Ajax Request)
#section scripts
{
<script type="text/javascript">
$(document).ready(function () {
GetEventDetails('#Url.Content("~/")');
});
function GetEventDetails(contextRoot) {
$.ajax({
type: "GET",
url: contextRoot + "api/EventsAPI",
dataType: "json",
success: function (data) {
debugger;
var datavalue = data;
contentType: "application/json";
//Send data to controller ???
console.log(data);
},
error: function (xhr) {
alert(xhr.responseText);
}
});
}
</script>
}
Controller.cs
public ActionResult Index()
{
/*Do all stuff before returning view
1. Get Json Data from Ajax request
2. Deserialize the obtained Json Data
3. return to view
*/
return View("Index");
}
Update:
I have tried the solution given by #J. Doe, but still unable to get the result set. Please check the screenshot and below code..
Ajax Request:
function GetEventDetails(contextRoot) {
$.ajax({
type: "GET",
url: contextRoot + "api/EventsAPI",
dataType: "json",
success: function (data) {
debugger;
var datavalue = data;
contentType: "application/json; charset=utf-8";
console.log(data);
var EventJson = data;
console.log(EventJson);
$.ajax({
type: "POST",
url: "#Url.Action("Index")",
dataType: "json",
data: EventJson,
contentType: "application/json; charset=utf-8",
//data: EventJson,
success: function (data) {
alert(data.responseText);
console.log('Data received: ');
console.log(data.responseText);
},
failure: function (errMsg) {
console.log(errMsg);
}
});
},
error: function (xhr) {
alert(xhr.responseText);
}
});
}
Class Properties:
public class RootObject
{
public Embedded _embedded { get; set; }
public Links _links { get; set; }
public Page page { get; set; }
}
Here is Action Result Controller:
public ActionResult Index(RootObject model)
{
if (model != null)
{
return Json("Success");
}
else
{
return Json("An Error Has occoured");
}
//return View("Index");
}
Error Snapshot:
enter image description here
1) Add [FromBody] the controller you are returning to. This will make the controller expect a JSON object.
[HttpPost]
public ActionResult Index([FromBody]RootObject model)
{
if (model != null)
{
return Json("Success");
}
else
{
return Json("An Error Has occoured");
}
//return View("Index");
}
2) If this doesn't work you are not posting a correct json object/you are not posting a json object use console.dir(EventJson); to inspect the object you are passing in the console of the browser.
3) How to create a JSON object in JS: https://www.w3schools.com/js/js_json_stringify.asp
We are trying
Hello soviet sojuz!
But back to question - A 2 months ago i created sample on GitHub with ajax with .Net Core - https://github.com/CShepartd/ASP.Net_Core_-_Ajax_Example
In short:
Make action with objects in controller:
public IActionResult Ajax(string name1, string name2)
{
return View();
}
Next in view send name1 and name2 to action
$('form').submit(function(event) {
event.preventDefault();
var data = {
name1: $("input[name='name1']", this).val(),
name2: $("input[name='name2']",this).val()
};
$.ajax({
type: 'POST',
url: '/Home/Ajax',
dataType: 'json',
data: data,
success: function(response) {
alert(response);
console.log('Data received: ');
console.log(response);
},
failure: function(response) {
//...
},
error: function(response) {
//...
}
});
});
I have been stuck at this problem for a whole day. What im trying to do is to send 2 values from view to controller using Ajax.
This is my code in hot_products view:
<script>
$(function(){
$('#btnSubmit').click(function() {
var from = $('#from').val();
var to = $('#to').val();
alert(from+" "+to);
$.ajax({
url: "/orders/hot_products",
type: 'POST',
data: {"start_time": from, "end_time": to,
success: function(data){
alert("success");
}
}
});
});
});
and my hot_products controller:
public function hot_products()
{
if( $this->request->is('ajax') ) {
$this->autoRender = false;
//code to get data and process it here
}
}
I dont know how to get 2 values which are start_time and end_time.
Please help me. Thanks in advance.
PS: im using cakephp 2.3
$this->request->data gives you the post data in your controller.
public function hottest_products()
{
if( $this->request->is('ajax') ) {
$this->autoRender = false;
}
if ($this->request->isPost()) {
// get values here
echo $this->request->data['start_time'];
echo $this->request->data['end_time'];
}
}
Update
you've an error in your ajax,
$.ajax({
url: "/orders/hot_products",
type: 'POST',
data: {"start_time": from, "end_time": to },
success: function(data){
alert("success");
}
});
If you method is POST:
if($this->request->is('ajax'){
$this->request->data['start_time'];
$this->layout = 'ajax';
}
OR
public function somefunction(){
$this->request->data['start_time'];
$this->autoRender = false;
ANd if method is GET:
if($this->request->is('ajax'){
$this->request->query('start_time');
$this->layout = 'ajax';
}
OR
public function somefunction(){
$this->request->query('start_time');
$this->autoRender = false;
I am trying to bind model received from Ajax call but that do not work. Maybe someone could help me?
I am calling ValidateFile Action using Ajax
$.ajax({
url: '#Url.Action("ValidateFile", "Converter")',
data: ({ file: fileName, formData: serializedForm }),
type: 'POST',
success: function (response) {
if (response.result) {
} else {
RemoveFile(fileName);
}
}
});
The Fiddler show such query
file=!!!SP+Design!!!.txt&formData%5BEmail%5D=tomas%40mydomain.com
I receive data in my Action with file parameter populated but formData.Email property is always Null
[HttpPost]
public JsonResult ValidateFile(string file, UploadOptionModel formData)
{
}
My UploadOptionModel model
namespace PC.Models
{
public class UploadOptionModel
{
public string Email { get; set; }
}
}
Form which I am trying to serialize
#model PC.Models.UploadOptionModel
#using (Html.BeginForm())
{
#Html.EditorFor(p => p.Email)
}
JS Serialization function
function serializeForm() {
var data = $("form").serializeArray();
var formData = {};
for (var i = 0; i < data.length; i++) {
formData[data[i].name] = data[i].value;
}
return formData;
}
You need to JSON encode the data and set the content type to JSON for the model binder to work with JSON. So try this:
$.ajax({
url: '#Url.Action("ValidateFile", "Converter")',
data: JSON.stringify({ file: fileName, formData: serializedForm }),
contentType: 'application/json',
type: 'POST',
success: function (response) {
if (response.result) {
} else {
RemoveFile(fileName);
}
}
});
I cannot figure out how to merge the following separate pieces of code:
$(document).ready(function () {
$("#signupForm").validate();
});
and
$(document).ready(function () {
$("#btnSignup").click(function () {
$.ajax({
type: "POST",
dataType: 'json',
url: "/Newsletter/Signup",
data: $('#signupForm').serialize(),
success: function (response) {
if (response.success) {
$('#signupMessage').show(0);
}
else {
showValidationErrors(response.Data);
}
}
});
return false;
});
I need the first part to execute first, and if it validates the form successfully, then I need to exectute the second part.
I believe that you can use valid().
Pseudo code;
$(document).ready(function () {
$("#signupForm").validate();
$("#btnSignup").click(function () {
if ($("#signupForm").valid()) {
// ajax query
}
return false;
});
});
Does that work? I haven't checked it.
Here is a somewhat general way I use.
$('form').submit(function(e){
if (!$(e.target) && !$(e.target).valid()) {
return;
}
// Ajax call here.
$.ajax({ type: "POST",... });
});
Lastly, you could abstract the logic into an object for a more OOP approach
var formHandler = {
onSubmit: function(e){
if (!$(e.target) && !$(e.target).valid()) {
return;
}
// Ajax call here.
$.ajax({ type: "POST",... });
}
}
$('form').submit(formHandler.onSubmit);