Develop Reference

i am trying to pass parameter to data through ajax

I am trying to pass value through an ajax json array but value of catergory variable is not getting in controller action
var category = $('#category').val();
var url = $('#ajax_action_search').val();
$.ajax({
type: "POST",
data: {
'category': category
},
dataType: "json",
cache: false,
contentType: false,
processData: false,
success: function(response) {}
});

You need to use the parameter namespace matching your extension/plugin:
$.ajax({
// ...
data: {
'tx_myext_foo[category]': category,
},
// ...
});
But you'll also need to configure the cHash evaluation since this will lead to a HTTP request like /?tx_myext_foo[category]=X which will fail without a matching cHash.
This can be done with the excludedParameters configuration option.

Please check the Controller action if category (parameter name) passed from the ajax is exactly same in the controller action too
var category = $('#category').val();
var url = $('#ajax_action_search').val();
$.ajax({
type: 'POST',
contentType: "application/json; charset=utf-8",
cache: false,
async: false,
url: url,
data: JSON.stringify {
category: category
},
dataType: 'json',
success: function(response) {}
});

You need to make ajaxurl with action and controller. and then pass the data in full format.
var ajaxUrl = '<f:uri.action action="youraction" controller="Yourcontroller" />';
var category = $('#category').val();
$.ajax({
type: 'POST',
url: ajaxUrl,
data: '&tx_yourext_yourplugin[category]='+category,
success: function(response) {
},
});

Just make the following changes :
var category = $('#category').val();
var url = $('#ajax_action_search').val();
$.ajax({
type: "POST",
url:url,
data: {'category': category},
dataType: "json",
success: function(response) {}
});

Send byte[] in ajax

I need to send data with id,name , and file (PdfBytes) byte[] with ajax to my service.
How can i add my PDF file to var pdf and add it to my ajax.
My code
var PdfBytes;
//Tried to fill PdfBytes with get,didnt work
$.get('http://testservices.xxx/PdfService/MYTest.pdf', function(data)
{
PdfBytes=data;
});
var ConvertHtmlToPdfAndSendEmail = {
"PdfBytes":PdfBytes,
id": id,
"Name": name
};
$.ajax({
type: "POST",
data: JSON.stringify(ConvertHtmlToPdfAndSendEmail),
dataType: 'json',
url: "http://testservices.xxx/ConvertHtmlToPdfAndDownload",
contentType: 'application/json; charset=utf-8',
async: true,
cache: false,
success: function (result) {
//my code
},
error: function (req, err) {
//my code
}
})
In the server i get PdfBytes is null
function expect to get byte[] PdfBytes
Sow how i can upload my pdf from my pc to var PdfBytes ,and send it in ajax to my service.

There two way to send byte[] in Ajax
You convert byte[] to string for GET or to json for POST
=> The main thing you should convert to byte array to text
and recover the data format when call the server script
$.ajax({
type: "GET",
url: "http://testservices.xxx/ConvertHtmlToPdfAndDownload?data="+encodeURI(byte_array.join())
});
$.ajax({
type: "POST",
dataType: "json",
data: JSON.stringify(byte_array),
url: "http://testservices.xxx/ConvertHtmlToPdfAndDownload"
});
Hope it help!

I think you should use option call 'async' so do that:
var PdfBytes = $.ajax({
url: 'http://testservices.xxx/PdfService/MYTest.pdf',
type: 'GET',
async: false
});
var ConvertHtmlToPdfAndSendEmail = {
PdfBytes: PdfBytes,
id: id,
Name: name
};
$.ajax({
type: "POST",
data: JSON.stringify(ConvertHtmlToPdfAndSendEmail),
dataType: 'json',
url: "http://testservices.xxx/ConvertHtmlToPdfAndDownload",
contentType: 'application/json; charset=utf-8',
async: true,
cache: false,
success: function (result) {
//my code
},
error: function (req, err) {
//my code
}
});
Hope it help.

Cant get value from ajax request to be save in variable outside the success

Once again I've been beating my head against the wall, trying to pull this part of returned data from ajax to a variable outside the function.
When I return the value it always comes up undefined when I alert() inside it shows the proper values.
function getItemInfo(itemHashPass) {
$.ajax({
url: 'index.php//Welcome/getItem', //This is the current doc
type: "POST",
data: 'iHash='+itemHashPass,
dataType: "json",
async: false,
success: function(data){
return data.Response.data.inventoryItem.itemName;
}
});
}
I've also tried
function getItemInfo(itemHashPass) {
var tmp = null;
$.ajax({
url: 'index.php//Welcome/getItem', //This is the current doc
type: "POST",
data: 'iHash='+itemHashPass,
dataType: "json",
async: false,
success: function(data){
tmp = data.Response.data.inventoryItem.itemName;
}
});
return tmp;
}

Like Jonathan said you should write your business logic in the callback or you can try Deferred syntax. In this case it will looks like
function yourBusinnesLogicFunction() {
...
getItemInfo("password_hash_value").done(
function(data){
alert(data.Response.data.inventoryItem.itemName);
}
)
}
function getItemInfo(itemHashPass) {
var tmp = null;
return $.ajax({
url: 'index.php//Welcome/getItem', //This is the current doc
type: "POST",
data: 'iHash='+itemHashPass,
dataType: "json",
async: false,
})
}

AJAX GET returns undefined on the first call, but works on the second one

I am working on a real estate web app in ASP.NET MVC. My problem is in my Reservations section.
I am using AJAX to post in a Controller which returns a JSONResult. Here is my code:
Controller
[HttpPost]
public JsonResult SubmitReservation(ReservationViewModel rvm)
{
return Json(rvm, JsonRequestBehavior.AllowGet);
}
Main AJAX
var rvm = new ReservationViewModel();
getBuyerInfo(rvm.SelectedBuyerID, clientCallback);
getSiteInfo(rvm.SelectedSiteID, siteCallback);
getUnitInfo(rvm.SelectedUnitID, unitCallback);
$.ajax({
url: "/Reservations/SubmitReservation",
data: JSON.stringify(rvm),
type: "POST",
dataType: "json",
contentType: "application/json",
success: function () {
console.log(clientData);
console.log(siteData);
console.log(unitData);
//Assignment of data to different output fields
//Client Data
$('#clientName').html(clientData.FullName);
$('#clientAddress').html(clientData.Residence);
$('#clientContact').html(clientData.ContactNumber);
//Site Data
$('#devSite').html(siteData.SiteName);
$('#devLoc').html(siteData.Location);
////House Unit Data
$('#unitBlock').html(unitData.Block);
$('#unitLot').html(unitData.Lot);
$('#modelName').html(unitData.ModelName);
$('#modelType').html(unitData.TypeName);
$('#lotArea').html(unitData.LotArea);
$('#floorArea').html(unitData.FloorArea);
$('#unitBedrooms').html(unitData.NumberOfBedrooms);
$('#unitBathrooms').html(unitData.NumberOfBathrooms);
$('#unitPrice').html(unitData.Price);
$('#reservationDetails').show();
alert("Success!");
},
error: function (err) {
alert("Error: " + err);
}
});
Functions for fetching data
function getBuyerInfo(id, cb) {
$.ajax({
url: "/BuyersInformation/GetBuyerByID/" + id,
type: "GET",
contentType: "application/json",
dataType: "json",
success: cb
});
}
function getSiteInfo(id, cb) {
$.ajax({
url: "/Sites/GetSiteByID/" + id,
type: "GET",
contentType: "application/json",
dataType: "json",
success: cb
});
}
function getUnitInfo(id, cb) {
$.ajax({
url: "/HouseUnits/GetUnitByID/" + id,
type: "GET",
contentType: "application/json",
dataType: "json",
success: cb
});
}
function ReservationViewModel() {
var buyerId = $('#SelectedBuyerID').val();
var siteId = $('#SelectedSiteID').val();
var unitId = $('#SelectedUnitID').val();
var rsvDate = $('#ReservationDate').val();
var me = this;
me.ReservationDate = rsvDate;
me.SelectedBuyerID = buyerId;
me.SelectedSiteID = siteId;
me.SelectedUnitID = unitId;
}
function clientCallback(result) {
clientInfo = result;
clientData = clientInfo[0];
}
function siteCallback(result) {
siteInfo = result;
siteData = siteInfo[0];
}
function unitCallback(result) {
unitInfo = result;
unitData = unitInfo[0];
}
The whole code WORKS well for the second time. However, it does not work for the FIRST time. When I refresh the page and I hit Create, it returns undefined. But when I hit that button again without refreshing the page, it works well. Can somebody explain to me this one? Why does AJAX returns undefined at first but not at succeeding calls? Thanks in advance.

You are calling several ajax requests in your code, inside these functions:
getBuyerInfo(rvm.SelectedBuyerID, clientCallback);
getSiteInfo(rvm.SelectedSiteID, siteCallback);
getUnitInfo(rvm.SelectedUnitID, unitCallback);
and finally $.ajax({...}) after them, where you use results from pervious ajax calls.
Your problem is that the first ajax calls do not necessarily return results before your start the last ajax because they are all async. You have to make sure you get three responds before calling the last ajax. Use promises or jQuery when, like this:
var rvm = new ReservationViewModel();
$.when(
$.ajax({
url: "/BuyersInformation/GetBuyerByID/" + rvm.SelectedBuyerID,
type: "GET",
contentType: "application/json",
dataType: "json"
}),
$.ajax({
url: "/Sites/GetSiteByID/" + rvm.SelectedSiteID,
type: "GET",
contentType: "application/json",
dataType: "json"
}),
$.ajax({
url: "/HouseUnits/GetUnitByID/" + rvm.SelectedUnitID,
type: "GET",
contentType: "application/json",
dataType: "json"
})
).done(function ( clientResponse, siteResponse, unitResponse ) {
clientInfo = clientResponse;
clientData = clientInfo[0];
siteInfo = siteResponse;
siteData = siteInfo[0];
unitInfo = unitResponse;
unitData = unitInfo[0];
$.ajax({ ... }) // your last ajax call
});

AJAX calls are asynchronous. You last ajax call will not wait until your above 3 ajax calls finishes its work. so you can make use of $.when and .done here as below..
$.when(
getBuyerInfo(rvm.SelectedBuyerID, clientCallback);
getSiteInfo(rvm.SelectedSiteID, siteCallback);
getUnitInfo(rvm.SelectedUnitID, unitCallback);
).done(
$.ajax({
//Ajax part
})
);

Send data from a javascript ajax function to a jsp

This is what I am trying to do. On a home page.. say /home.jsp, a user clicks on a link. I read value of the link and on the basis of which I call a RESTful resource which in turn manipulates database and returns a response. Interaction with REST as expected happens with use of JavaScript. I have been able to get information from REST resource but now I want to send that data to another JSP.. say /info.jsp. I am unable to do this.
I was trying to make another ajax call within success function of parent Ajax call but nothing is happening. For example:
function dealInfo(aparameter){
var requestData = {
"dataType": "json",
"type" : "GET",
"url" : REST resource URL+aparameter,
};
var request = $.ajax(requestData);
request.success(function(data){
alert(something from data); //this is a success
//I cannot get into the below AJAX call
$.ajax({
"type": "post",
"url": "info.jsp"
success: function(data){
alert("here");
("#someDiv").html(data[0].deviceModel);
}
});
How do I go about achieving this? Should I use some other approach rather than two Ajax calls? Any help is appreciated. Thank You.

You can use the following function:
function dealInfo(aparameter) {
$.ajax({
url: 'thePage.jsp',
type: "GET",
cache: false,
dataType: 'json',
data: {'aparameter': aparameter},
success: function (data) {
alert(data); //or you can use console.log(data);
$.ajax({
url: 'info.jsp',
type: "POST",
cache: false,
data: {'oldValorFromFirstAjaxCall': data},
success: function (info) {
alert(info); //or you can use console.log(info);
$("#someDiv").html(info);
}
});
}
});
}
Or make the AJAX call synchronous:
function dealInfo(aparameter) {
var request = $.ajax({
async: false, //It's very important
cache: false,
url: 'thePage.jsp',
type: "GET",
dataType: 'json',
data: {'aparameter': aparameter}
}).responseText;
$.ajax({
url: 'info.jsp',
type: "POST",
cache: false,
data: {'oldValorFromFirstAjaxCall': request},
success: function (info) {
alert(info); //or you can use console.log(info);
$("#someDiv").html(info);
}
});
}

In this way I'm using.
"type": "post" instead of type: 'post'
Maybe it will help. Try it please. For Example;
$.ajax({
url: "yourURL",
type: 'GET',
data: form_data,
success: function (data) {
...
}
});