Develop Reference

Calling [HTTPPost] from Javascript ASP.NET

I am using a method in my controller which imports data from an API. This method I am wanted to be called from two locations. First the view (currently working) and secondly a javascript function.
Start of controller method:
[ActionName("ImportRosters")]
[HttpPost]
public ActionResult PerformImportRosterData(int id, int? actualLength, int? rosterLength)
{
var authenticator = Authenticator(id);
var rosters = authenticator.Api().RosterData().ToDictionary(x => x.Id);
var databaseRosterDatas = SiteDatabase.DeputyRosterData.Where(x => x.SiteID == id)
.ToDictionary(x => x.Id);
Javascript Function:
$("#btnDeputyRunNowUpdate").click(function() {
$("#btnRunDeputyNow").modal("hide");
ActualLength = $("#actualRunLength").val();
RosterLength = $("#rosterRunLength").val();
$.ajax({
type: "POST",
url: "/deputy/PerformImportRosterData",
data: { SiteIDRoster, ActualLength, RosterLength }
});
SiteIDRoster = null;
location.reload();
$("#btnRunDeputyNow").modal("hide");
toast.show("Import Successful", 3000);
});
All values are being set but i am getting a 404 error on the url line
POST https://example.org/deputy/PerformImportRosterData 404 ()
I need a way to be able to call this c# method from both html and JS

This can be done if you will modify the URL in your AJAX. It should look something like
url: '<%= Url.Action("YourActionName", "YourControllerName") %>'
or
url: #Url.Action("YourActionName", "YourControllerName")
one more thing, I don't see if you do anything with the result of the call. your script does not have success part
success: function(data) {//do something with the return}
and would be very helpful to have error handler in your call.
full example on how AJAX should look like:
$.ajax({
url: "target.aspx",
type: "GET",
dataType: "html",
success: function (data, status, jqXHR) {
$("#container").html(data);
alert("Local success callback.");
},
error: function (jqXHR, status, err) {
alert("Local error callback.");
},
complete: function (jqXHR, status) {
alert("Local completion callback.");
}
})
For a good tutorial on AJAX read this document
Change after Comment:
my current code is below:
$("#btnDeputyRunNowUpdate").click(function() {
$("#btnRunDeputyNow").modal("hide");
ActualLength = $("#actualRunLength").val();
RosterLength = $("#rosterRunLength").val();
$.ajax({
type: "POST",
url: '<%= Url.Action("PerformImportRosterData", "DeputyController") %>',
data: { SiteIDRoster, ActualLength, RosterLength },
success: function(data) {
console.log(data);
console.log("TESTHERE");
}
});
}
UPDATE:
Noticed one more thing. Your parameters in the controller and AJAX do not match. Please try to replace your a few lines in your AJAX call with:
url: "/deputy/PerformImportRosterData",
data: { id: yourIDValue, actualLength: youractualLengthValue,
rosterLength :yourrosterLengthValue }
remember to set all variable values in javascript , if they have no values set them = to null.
Can you try copy paste code below
$.ajax({
type: "POST",
url: "/deputy/PerformImportRosterData",
data: { SiteIDRoster:999, ActualLength:1, RosterLength:2 }
});
And let me know if it wall cause any errors.

After attempting to solve for a few days, I created a workaround by creating two methods for importing the data. one for the httpPost and the second for import calling from javascript.
Not a great solution but it works. Thanks for your help Yuri

jQuery.when() doesn't seem to be waiting

I need to make a server side call when a user does something in the DOM (click a checkbox, select a dropdown, etc. This is the series of events:
User clicks a checkbox (or something)
A spinner fades in and the UI becomes unavailable
The server side call is made, and gets back some JSON
A label in the UI is updated with a value from the JSON
The spinner fades out and the UI becomes available again
The problem I'm having is that 4 and 5 often get reversed, and the spinner fades out sometimes 2 or 3 seconds before the label is updated.
I'm trying to use .when() to make sure this isn't happening, but I don't seem to be doing it right. I've been looking at this thread, and this one, and jquery's own documentation.
Here's where I'm at right now...
function UpdateCampaign() {
$('#overlay').fadeIn();
$.when(SaveCampaign()).done(function () {
$('#overlay').fadeOut();
});
}
function SaveCampaign() {
var formData =
.... // get some data
$.ajax({
url: '/xxxx/xxxx/SaveCampaign',
type: 'GET',
dataType: 'json',
data: { FormData: formData },
success: function (data) {
var obj = $.parseJSON(data);
.... // update a label, set some hidden inputs, etc.
},
error: function (e) {
console.log(e)
}
});
}
Everything works correctly. The server side method is executed, the correct JSON is returned and parsed, and the label is updated as expected.
I just need that dang spinner to wait and fade out until AFTER the label is updated.

The issue is because you're not giving $.when() a promise. In fact you're giving it nullso it executes immediately. You can solve this by returning the promise that $.ajax provides from your SaveCampaign() function like this:
function SaveCampaign() {
var formData = // get some data
return $.ajax({ // < note the 'return' here
url: '/xxxx/xxxx/SaveCampaign',
type: 'GET',
dataType: 'json',
data: { FormData: formData },
success: function (data) {
var obj = $.parseJSON(data);
// update a label, set some hidden inputs, etc.
},
error: function (e) {
console.log(e)
}
});
}

I know its answered by Rory already. But here's mine promise method, it works fine always and instead of using success and error uses done and fail
var jqXhr = $.ajax({
url: "/someurl",
method: "GET",
data: {
a: "a"
});
//Promise method can be used to bind multiple callbacks
if (someConditionIstrue) {
jqXhr
.done(function(data) {
console.log('when condition is true', data);
})
.fail(function(xhr) {
console.log('error callback for true condition', xhr);
});
} else {
jqXhr.done(function(data){
console.log('when condition is false', data);
})
.fail(function(xhr) {
console.log('error callback for false condition', xhr);
});
}
Or if I want a common callback other than conditional ones, can bind directly on jqXhr variable outside the if-else block.
var jqXhr = $.ajax({
url: "/someurl",
method: "GET",
data: {
a: "a"
});
jqXhr
.done(function(data) {
console.log('common callback', data);
})
.fail(function(xhr) {
console.log('error common back', xhr);
});

ajax request not sending any data ASP.NET MVC project with jQuery

I'm fairly new to asp.net MVC but am baffled as to why my request isn't working.
I'm trying to send an ajax request with jquery as per:
jQuery(function ($) {
var total = 0,
share = $('div.share'),
googlePlusUrl = "https://plusone.google.com/_/+1/fastbutton?url=http://bookboon.com" + $(location).attr('pathname');
setTimeout(function() {
$.ajax({
type: 'GET',
data: "smelly",
traditional: true,
url: share.data('proxy'),
success: function(junk) {
//var $junk = junk.match(regex);
console.log(junk);
},
error: function (xhr, errorText) {
console.log('Error ' + xhr.responseType);
},
});
}, 4000);
And set a line in my RouteConfig as:
routes.MapRoute(null, "services/{site}/proxy", new { controller = "Recommendations", action = "Proxy" });
The markup has a data-attribute value as:
<div class="share" data-proxy="#Url.Action("Proxy", "Recommendations")">
And my Proxy action method starts with:
public ActionResult Proxy(string junk)
The problem is that the junk parameter is always null. I can see in the debug output that the route seems to correctly redirect to this method when the page loads (as per jQuery's document ready function), but I cannot seem to send any data.
I tried sending simple data ("smelly") but I don't receive that neither.
Any suggestions appreciated!

The model binder will be looking for a parameter in the request called junk, however you're sending only a plain string. Try this:
$.ajax({
type: 'GET',
data: { junk: "smelly" }, // <- note the object here
traditional: true,
url: share.data('proxy'),
success: function(junk) {
//var $junk = junk.match(regex);
console.log(junk);
},
error: function (xhr, errorText) {
console.log('Error ' + xhr.responseType);
},
});

Unable to get value from json object

I am trying to get a value from a json object after making an ajax call. Not sure what I am doing wrong it seems straight forward but not able to get the data
The data that comes back looks like this
{"data":"[{\"Id\":3,\"Name\":\"D\\u0027Costa\"}]"}
The code, removed some of the code
.ajax({
type: 'POST',
url: "http://localhost:1448/RegisterDetails/",
dataType: 'json',
data: { "HomeID": self.Id, "Name": $("#txtFamilyName").val()},
success: function (result) {
console.log(result.data); //<== the data show here like above
alert(result.data.Id); //<==nothing show
},
error: function (xhr, ajaxOptions, thrownError) {
}
});
I tried in the Chrome console like this
obj2 = {}
Object {}
obj2 = {"data":"[{\"Id\":3,\"Name\":\"D\\u0027Costa\"}]"}
Object {data: "[{"Id":3,"Name":"D\u0027Costa"}]"}
obj2.data
"[{"Id":3,"Name":"D\u0027Costa"}]"
obj2.data.Id
undefined
obj2.Id
undefined
Update
The line that solved the issue as suggested here is
var retValue = JSON.parse(result.data)[0]
Now I can used
retValue.Name
to get the value

Actually, looking at this, my best guess is that you're missing JSON.parse()
.ajax({
type: 'POST',
url: "http://localhost:1448/RegisterDetails/",
dataType: 'json',
data: { "HomeID": self.Id, "Name": $("#txtFamilyName").val()},
success: function (result) {
var javascriptObject = JSON.parse(result);
console.log(javascriptObject ); //<== the data show here like above
alert(javascriptObject.Id); //<==nothing show
},
error: function (xhr, ajaxOptions, thrownError) {
}
});
I also find that doing ajax requests like this is better:
var result = $.ajax({
url: "someUrl",
data: { some: "data" },
method: "POST/GET"
});
result.done(function (data, result) {
if (result == "success") { // ajax success
var data = JSON.parse(data);
//do something here
}
});
For clarity it just looks better, also copying and pasting into different functions as well is better.

The id property is in the first element of the data-array. So, alert(result.data[0].Id) should give the desired result. Just for the record: there is no such thing as a 'JSON-object'. You can parse a JSON (JavaScript Object Notation) string to a Javascript Object, which [parsing] supposedly is handled by the .ajax method here.

The data field is just a string, you should parse it to a JSON object with JSON.parse(result.data), since data is now an array you will need to need to use an index [0] to have access to the object. Know you will be able to get the Id property.
JSON.parse(result.data)[0].Id

Submit Ajax Form via php without document.ready

I am submitting a number of forms on my page via php using Ajax. The code works great in forms preloaded with the page. However, I need to submit some dynamic forms that don't load with the page, they are called via other javascript functions.
Please, I need someone to help me review the code for use for forms that don't load with the page. Also the 'failure' condition is not working.
The code is below:
<script type="text/javascript">
feedbar = document.getElementById("feedbar");
jQuery(document).ready(function() {
$('#addressform').on('submit', function (e) {
$.ajax({
type: 'post',
url: 'data/process.php',
data: $('#addressform').serialize(),
success: function () {
feedbar.innerHTML='<div class="text-success">New Addressed Saved Successfully</div>';
},
failure: function () {
feedbar.innerHTML='<div class="text-danger">Error Saving New Address</div>';
}
});
e.preventDefault();
});
});
Thanks.

You need to bind event by existing html (e.g body).
Event handlers are bound only to the currently selected elements; they must exist on the page at the time your code makes the call to .on()
see api: https://api.jquery.com/on/
Try like this:
$("body").on('submit', '#addressform',function (e) {
$.ajax({
type: 'post',
url: 'data/process.php',
data: $('#addressform').serialize(),
success: function () {
feedbar.innerHTML='<div class="text-success">New Addressed Saved Successfully</div>';
},
failure: function () {
feedbar.innerHTML='<div class="text-danger">Error Saving New Address</div>';
}
});
e.preventDefault();
});
});

you can delegate to document:
$(document).on('submit', '#addressform', function (e) {
$.ajax({
type: 'post',
url: 'data/process.php',
data: $(this).serialize(), // <----serialize with "this"
success: function () {
feedbar.innerHTML='<div class="text-success">New Addressed Saved Successfully</div>';
},
error: function () { //<----use error function instead
feedbar.innerHTML='<div class="text-danger">Error Saving New Address</div>';
}
});
e.preventDefault();
});
});
As you have posted this line as below:
I need to submit some dynamic forms that don't load with the page
What i understand with this line is you want a common submit function for all forms which are generated dynamically, then you can do this:
$(document).on('submit', 'form', function (e) {
$.ajax({
type: 'post',
url: 'data/process.php',
data: $(this).serialize(), // <----"this" is current form context
success: function () {
//some stuff
},
error: function () { //<----use error function instead
//some stuff
}
});
e.preventDefault();
});
});
For your last comment:
You can try to get the text in ajax response like this:
success: function (data) {
feedbar.innerHTML='<div class="text-success">'+ data +'</div>';
},
error: function (xhr) { //<----use error function instead
feedbar.innerHTML='<div class="text-danger">' + xhr.responseText + '</div>';
}
if Success:
here in success function you get the response in data which is the arguement in success function, this holds the response which it requested to the serverside.
if Error:
Same way if something goes wrong at the serverside or any kind of execption has been occured then xhr which is the arguement of error function holds the responseText.
And finally i suggest you that you can place your response in feedbar selector using jQuery this way:
var $feedbar = $('#feedbar');
so in success function:
$feedbar.html('<div class="text-success">'+ data +'</div>');
so in error function:
$feedbar.html('<div class="text-success">'+ xhr.responseText +'</div>');