Develop Reference

jQuery Ajax post is not working

I know that there is a lot of questions like this out there, but I have been surfing them and other website for like 4 hours trying to figure this out. I am trying to get main.js to post the data via ajax and then the php should echo that data. If it does not work, it will echo "null". It keeps echoing "null" instead of "John". I know that the jquery and main.js links work, I have tested them. Here is main.js:
$(document).ready(function(){
$.post("index.php", { test: "John"} );
});
And here is the php part of index.php:
<?php
$var = "null";
if(isset($_POST['test'])) {
$var = $_POST['test'];
}
echo $var;
?>
I hope you can solve my problem, and thank you in advance.

You are missing the callback function with the response from the server.
$.post( "index.php",{ test: "John"}, function( data ) {
alert(data);
});
Or you can do something like this:
$.post( "index.php",{ test: "John"})
.done(function( data ) {
alert( "Data Loaded: " + data );
});
Please check the documentation Documentation

Give this a shot
jQuery
var available agent = 1;
jQuery.ajax({
type: "POST",
url: "your-url",
data: available_agent,
dataType: 'json',
cache: false,
contentType: false,
processData: false,
success: function(data){
owner = data['round_robin_agent'];
},
error : function () {
alert("error");
}
});
PHP Script
public function round_robin() {
//Do your work
$round_robin_agent = 'rob';
$results_array = array(
'round_robin_agent' => $round_robin_agent
);
return json_encode($results_array);
}

Download HTTP Trace chrome extension, traceback ajax call and share a screenshot.
https://chrome.google.com/webstore/detail/http-trace/idladlllljmbcnfninpljlkaoklggknp

Problema sending json file from javascript to laravel controller

im having problems trying to send a JSON file from javascript to Laravel controller, when i press my button from the view i didnt get any response.
This is my code, i appreciate any help or suggestion, thnks.
This is the the JS code:
var horarios= { Lunes: arrLunes, Martes: arrMartes, Miercoles: arrMiercoles, Jueves:arrJueves, Viernes:arrViernes};
var schedule = JSON.stringify(horarios);
//console.log(schedule);
var varurl= 'http://localhost/registerEntrance';
$.ajax({
type: "POST",
url: varurl,
data: {json:schedule},
dataType:'json',
success: function(res) {
var message = res.mesg;
if (message) {
$('.flash').html(message).fadeIn(300).delay(250).fadeOut(300);
};
}
});
When i press my button, doesnt happend anything. The next id the route and the controller code, the JSON file not arrive there yet.
Route::post('registerEntrance', array('as' => 'registerEntrance','uses' => 'CursoController#regisEnt'));
public function regisEnt(){
if(Request::ajax()) {
$data = Input::all();
return $data;
}
}
Thnks for any help.

What are you using to debug your requests? Have you checked your storage/logs/framework/laravel.log (if your log is HUGE you can always delete it and re-run your request)
Working with AJAX can get tricky when it comes to debugging your requests.
My recommendation would be
Open up your browser Inspector, and monitor Network Requests
Analyze the request you're sending.
Set debug to true under config/app.php to actually see a debug
Hope this helps!

I get resolv my problem, i post it if someone is getting a similar inconvenience.
In my view i wasnt create a form.
{!! Form::open(['route' => ['route'], 'method' => 'POST', 'id' =>'form-name']) !!}
{!! Form::close() !!}
This part create a implicit token that is necesary in laravel for use ajax method.
My code JS was modified for getting and send the csrf token.
var form = $('#form-name');
var myurl = form.attr('action');
crsfToken = document.getElementsByName("_token")[0].value;
$.ajax({
url: myurl,
type: 'POST',
data: {data:data},
datatype: 'JSON',
headers: {
"X-CSRF-TOKEN": crsfToken
},
success: function(text){
bootbox.dialog({
closeButton: false,
message: "Ok!",
title: "Perfect!!",
},
error: function(data){
console.log("Error");
}
});
With this change i get arrive to my controller.
Anyway Thnks.

AJAX send post request only once

I'm having a problem with ajax, as it sends only once my request, i have a cssmap plugin, and that plugin have the option onSecondClick which gives me the ability to do something when i click on it twice, my post request sends some data, to the sessions.php, in session.php i delete session, and then i put one again.
The js lines :
'onSecondClick' : function(e){
var regionName = e.children("A").eq(0).text(),
regionHref = e.children("A").eq(0).attr("href"),
regionClass = e.attr("class").split(" ")[0];
if(regionClass == "eu13" || regionClass == "eu16" || regionClass == "eu47"){
//open model success
$.ajax({
type: "POST",
url: 'session',
data: { country : regionClass },
cache: false,
success: function(data){
$( "#success" ).click();
}
});
//$( "#success" ).click();
}else{
//open model error
$( "#error" ).click();
}
},
PS - the url is right, thats the url of the file, and the session is set, but only once and doesn't upadate.
session.php:
if(Input::get('country')){
$countries = array(
'eu13' => 'france',
'eu16' => 'germany',
'eu47' => 'united kingdom',
//end of playable countries, the rest is bots!
'eu5' => 'belgium',
'eu27' => 'luxembourg',
'eu33' => 'netherlands',
'eu44' => 'switzerland',
'eu20' => 'ireland'
);
if(Session::get('selected');){
Session::delete('selected');
}
Session::put('selected',$countries[Input::get('country')]);
}
On the success, i click a button, which open a "model" from Bootstrap.
everything is ok, but the session always return the previous clicked country, and no matter how much i click other country, it doesn't change.
i've got no idea what the problem is, tried e.preventdefault(), cache: false, and some more options, nothing seems to fix it.

It's hard to tell where the problem lies from your description, but if it's about presentation (i.e. you can verify that session.php does it's job, but still the modal presents the wrong info), this is probably the reason.
Bootstrap modals are only, by default, filled with content once. After that it will use .toggle to show or hide.
If you want to update the information, you'll have to clear it first:
$('body').on('hidden.bs.modal', '.modal', function () {
$(this).removeData('bs.modal');
});
This will clear any content from modals with class modal when it hides/closes. You can also use an id selector of course, like #myModal.
edit:
Try this ajax. What does the alert return?
$.ajax({
type: "POST",
url: "session",
data: { "country": regionClass },
contentType: 'application/x-www-form-urlencoded; charset=UTF-8',
cache: false,
success: function(data){
alert(data);
$("#success").click();
}
});
And add something like this to the end of your session.php:
echo $countries[Input::get('country')];
(php is not really my thing. I think that's correct though)

Laravel 4: manipulating ajax data through controller

I'm new at Laravel and ajax. I'm trying to get the data from a form via ajax and calling a method in the controller via that same ajax. The method in the controller searches the database and then returns a json response that gets handled by ajax(that last part I'm still thinking about, I haven't really done it yet).
Let me show you what I have now:
Routes.php:
Route::get('/', 'HomeController#getIndex');
Route::post('/', 'HomeController#postIndex');
HomeController:
public function getIndex()
{
return View::make('index');
}
public function postIndex()
{
$match = Input::get('search');
$results = Customers::where('name', 'like', '%'.$match.'%')->get();
return Response::json(array('results' => $results));
}
And my index.blade.php View :
<script>
$(document).ready(function() {
$('form#find').submit(function() {
$.ajax({
url : 'CustomerSearch/Public',
type: 'post',
dataType: 'json',
data: $('form#find').serialize(),
});
return false;
});
});
and the form:
{{ Form::open(array('url' => '', 'method' => 'POST', 'id' => 'find')) }}
{{ Form::text('search', '', array('class' => 'search-query', 'placeholder' => 'Search')) }}
{{ Form::submit('Submit', array('class' => 'btn btn-info')) }}
{{ Form::close() }}
So I should be getting the data from the form then sending it to the "postindex" method in the controller so it gets processed and then sent back, right? Except I get the error "Controller method [index] not found." when I don't actually call any index method since they are both named differently.
I'm new at this so sorry if it's not clear.
UPDATE:
Like I said in the commentaries, I found out combining the route into a route::controller got rid of my previous problem but unfortunately I'm still unable to get the ajax to send data to my controller. I get no errors, but the ajax doesn't load anything to the controller. Any idea what might be wrong with my ajax?:
$(document).ready(function() {
$('form#find').submit(function() {
$.ajax({
url : '{{URL::to('/')}}',
type: "POST",
dataType: 'json',
data: { search: $('.search-query').val() },
success: function(info){
console.log(info);
}
});
return false;
});
});

Just use in your controller:
return json_encode(array('key' => 'val'));
For the input of data, I moved to a JQuery plugin that works nicely for me. Follow this link.
This is how a function looks like:
function someName(){
// A plugin is used for this function
$('#form_id').ajaxForm({
url: '/',
type: 'post',
dataType: 'json',
success: function(response){
alert(response.key);
}
});
}
and the corresponding form:
<form id="form_id">
<!-- Put your fields here -->
<input type="submit" onclick="someName()">
</form>
I would suggest you use this method, which may depend on the plugin but is the simplest. Of course, you could use the .submit() statement instead of binding it to the onclick event

cakephp 2.2 retrieve json data in controller

I'm trying to send JSON data from a web page using JQuery, like this:
$.ajax({
type: "post", // Request method: post, get
url: "http://localhost/ajax/login",
data: '{username: "wiiNinja", password: "isAnub"}',
dataType: "json", // Expected response type
contentType: "application/json",
cache: false,
success: function(response, status) {
alert ("Success");
},
error: function(response, status) {
alert('Error! response=' + response + " status=" + status);
}
});
In cake2.2, I have a controller named Ajax that has a method named "login", like this:
public function login($id = null)
{
if ($this->RequestHandler->isAjax())
{
$this->layout = 'ajax'; // Or $this->RequestHandler->ajaxLayout, Only use for HTML
$this->autoLayout = false;
$this->autoRender = false;
$response = array('success' => false);
$data = $this->request->input(); // MY QUESTION IS WITH THIS LINE
debug($data, $showHTML = false, $showFrom = true);
}
return;
}
I just want to see if I'm passing in the correct data to the controller. If I use this line:
$data = $this->request->input();
I can see the debug printout:
{username: "wiiNinja", password: "isCool"}
I read in the CakePHP manual 2.x, under "Accessing XML or JSON data", it suggests this call to decode the data:
$data = $this->request->input('json_decode');
When I debug print $data, I get "null". What am I doing wrong? Is my data passed in from the Javascript incorrect? Or am I not calling the decode correctly?
Thanks for any suggestion.
============= My own Edit ========
Found my own mistake through experiments:
When posting through Javascript, instead of this line:
data: '{username: "wiiNinja", password: "isAnub"}',
Change it to:
data: '{"username": "wiiNinja", "password": "isAnub"}',
AND
In the controller code, change this line:
$data = $this->request->input('json_decode');
To:
$data = $this->request->input('json_decode', 'true');
It works.
Dunhamzzz,
When I followed your suggestions, and examine the "$this->request->params" array in my controller code, it contains the following:
array(
'plugin' => null,
'controller' => 'ajax',
'action' => 'login',
'named' => array(),
'pass' => array(),
'isAjax' => true
)
As you can see, the data that I'm looking for is not there. I've already got the the proper routes code. This is consistent with what the documentation for 2.x says here:
http://book.cakephp.org/2.0/en/controllers/request-response.html
So far, the only way that I found to make it work, is as stated above in "My own Edit". But if sending a JSon string to the server is not the right thing to do, I would like to fix this, because eventually, I will have to handle third party code that will send JSon objects.

The reason you are struggling wit the data is because you are sending a string with jQuery, not a proper javascript object (JSON).
$.ajax({
type: "post", // Request method: post, get
url: "http://localhost/ajax/login",
data: {username: "wiiNinja", password: "isAnub"}, // outer quotes removed
dataType: "json", // Expected response type
contentType: "application/json",
cache: false,
success: function(response, status) {
alert ("Success");
},
error: function(response, status) {
alert('Error! response=' + response + " status=" + status);
}
});
Now the data will be available as a PHP array in $this->request->params.
Also for sending a JSON response, please see this manual page. Most of your code there can be reduced to just 2 lines...
//routes.php
Router::parseExtensions('json');
//Controller that sends JSON
$this->set('_serialize', array('data'));