I want to bind repeater with entity framework, that call a procedure in database(Speed purposes), i create an ajax web method to be called from jquery code to sent parameters. so it will decide what data to display.
Below is the ajax call that will sent the parameter to showResult web method, i use the ajax code to handle all data within one page, because i have drop down lists to handle user selections(every selection reflect a query in database).
$.ajax({
url: "WebService.asmx/showResult",
type: "post",
data: JSON.stringify({
"dateFrom": $('#txtDateFrom').val(),
"dateTo": $('#txtDateTo').val(),
"ddlType": $("#ddlType").children("option").filter(":selected").val(),
"ddlTer": $("#ddlTer").children("option").filter(":selected").val()
}), // parameters
beforeSend: function () {
$('#loader').html('<img src="Images/loading.gif" />');
},
contentType: "application/json; charset=utf-8",
success: function (result) {
$('#loader').html('');
//To delete the whole tr except the first one.
$("#tblUsers").find("tr:gt(0)").remove();
$('#tblUsers').append(JSON.stringify(result));
},
error: function () {
alert('error');
}
});
also, below is the web method showResult code that will call the proc with parameters:
public string showResult(DateTime dateFrom, DateTime dateTo)
{
string result = " ";
var sp = db.select_alltypes(dateFrom, dateTo).ToList();
foreach (var u in sp)
{
result += "<tr>";
result += "<td>"+u.depno+"</td>";
result += "</tr>";
result += "</table>";
}
return result;
}
I used to return a table and to append it to the table in .aspx page but i stop, because I want to show 3 tables in the page every table data will present an execution of procedure so, I don't know how to handle this, instead of tables i use 3 repeaters.
so i want to a way to change the DataSource of the repeater immediately whenever the user press a button.
Note: If any one have an idea to present three tables instead of using
repeaters, please provide it here.
Related
I am experiecing some issues with AJAX updating the page. The actual data in the database is updated but this is not always reflecting in real time on the web page.
For example, I have the following event:
$("#add_note").click(function(e) {
//e.preventDefault();
$("#add_note_form").validate({
rules: {
contact_note: {
required: true
}
},
submitHandler: function(form) {
contact.modal_update({
'obj' : $('#add_note_form'),
'uri' : '/contact/add_note/'
});
}
});
});
This function when a new note is created calls a callback to validate the form fields first and then if successful calls a callback inside a seperate class to conduct the update. See the modal_update class below:
// Update modal
this.modal_update = function(data)
{//
// Declare a few variables for the data object we've received
obj = data.obj // The form element to serialize
uri = data.uri;
// Get the form ID from the data-target attribute
id = obj.attr('data-target');
// URL to send to
url = this.site_url + uri + id;
// The form object
this.post_data(obj.serialize(),url);
// Hide Modal
obj.closest('.modal').modal('hide');
// Refresh
this.refresh();
}
This then figures out the correct route to ajax and calls a ajax call back inside the same class:
// AJAX post
this.post_data = function(obj,uri)
{
$.ajax({
data: obj,
dataType: 'json',
type: 'post',
url: uri,
headers: { "cache-control": "no-cache" },
cache: false,
success: function (response) {
if (response.success == true)
{
$("#alert_success .msg").html(response.message);
$("#alert_success").fadeIn(200).delay(2000).fadeOut(200);
}
else
{
$("#alert_error .msg").html(response.error);
$("#alert_error").fadeIn(200).delay(2000).fadeOut(200);
console.log(response.error);
}
}
});
}
I am then running another class callback to "refresh" the data in all the elements on the page:
this.refresh = function()
{
// Refresh the ajax requests
this.get_contact_data();
this.get_notes();
this.get_contact_log();
this.get_contact_tasks();
}
This class re loads the functions which run on page load to get the inial data into the tables/fields on the page. See "get_notes" below:
// Get notes
this.get_notes = function()
{
// Get all notes and populate table
var log_uri = this.site_url + "/contact/get_notes/" + this.contact_id;
this.get_data(log_uri,function(data) {
notes = $("#contact_notes ul");
notes.empty("");
// Populate the contact fields, assuming there is a result to play with
if (data != false) {
//alert(JSON.stringify(data));
$("#notes-tab .count").html("(" + data.length + ")");
$.each( data, function( key, value ) {
notes.append("<li class='list-group-item' modal-id='editNoteModal' data-target='" + value.ID + "'><div class='row'><div class='col-lg-3'><i class='fa fa-sticky-note mr-3'></i>" + value.timestamp + "</div><div class='col-lg-7'>" + value.note + "</div><div class='col-lg-2'><a href='#' class='edit mr-3'><i class='fa fa-edit mr-1'></i>Edit</a><a href='#' class='delete'><i class='fa fa-times mr-1'></i>Remove</a></div></div></li>");
});
console.log('Notes loaded');
} else {
notes.append("<li>There are currently no notes for this contact</li>");
}
});
}
Now the problem:
For some reason this does not update consistently in real time. The data is updated fine on the server side but on the client side the update/refresh does not always update. I might add a note and get a correct update response but the refresh method seems to be receiving the old data and always be one note behind. So the next time I add a note, the one I added before then appears and so forth.
Another problem I am experiencing is the methods seem to stack on each event so if I add one note (or one of the other methods) I will see the console say "notes loaded" but on the second note it says "notes loaded" twice, then on the 3rd note added 3 times and so forth.
I am sure there must be something fatal flaw in the design of my code here but I am not experienced enough with javascript/jquery to notice what direction I am going wrong so I can fix it.
I thought that this was an issue with ajax caching and not refreshing the result so I have adjusted the ajax request as cache none and also to send no cache headers. I am running in wamp.
In your case, your refresh code will always run before your data got updated. Because ajax is asynchronous so the code behind and below ajax will always execute nearly the time your ajax running.
At the time you run your post_data function to call the API, the refresh function got run too. So it's done before your data got updated.
You should run refresh function inside ajax callback. For example:
this.post_data = function(obj,uri, callback)
{
$.ajax({
data: obj,
dataType: 'json',
type: 'post',
url: uri,
headers: { "cache-control": "no-cache" },
cache: false,
success: function (response) {
if (response.success == true)
{
$("#alert_success .msg").html(response.message);
$("#alert_success").fadeIn(200).delay(2000).fadeOut(200);
}
else
{
$("#alert_error .msg").html(response.error);
$("#alert_error").fadeIn(200).delay(2000).fadeOut(200);
console.log(response.error);
}
callback();
}
});
}
And in modal_update, you pass refresh function to post_data as a callback:
this.modal_update = function(data)
{//
// Declare a few variables for the data object we've received
obj = data.obj // The form element to serialize
uri = data.uri;
// Get the form ID from the data-target attribute
id = obj.attr('data-target');
// URL to send to
url = this.site_url + uri + id;
// The form object
this.post_data(obj.serialize(),url, this.refresh);
// Hide Modal
obj.closest('.modal').modal('hide');
}
You should read more about asynchronous ajax. You can use other tricky solution is setTimeout to run this.refresh but I do not recommend that because you not sure when the update is done.
I've been trying to make a simple site, and I can't quite wrap my head around some of the things said here, some of which are also unrelated to my situation.
The site has a form with 3 input boxes, a button, and a list. The info is submitted through a separate PHP file to a MySQL database, once the submit button is clicked. I'm supposed to make the list (it's inside a div) update once the info is successfully sent and updated in the database. So far I've made it work with async:false but I'm not supposed to, because of society.
Without this (bad) option, the list doesn't load after submitting the info, because (I assume) the method is executed past it, since it doesn't wait for it to finish.
What do I exactly have to do in "success:" to make it work? (Or, I've read something about .done() within the $.ajax clause, but I'm not sure how to make it work.)
What's the callback supposed to be like? I've never done it before and I can get really disoriented with the results here because each case is slightly different.
function save() {
var name = document.getElementById('name');
var email = document.getElementById('email');
var telephone = document.getElementById('telephone');
$.ajax({
url: "save.php",
method: "POST",
data: { name: name.value, email: email.value, telephone: telephone.value },
success: $("List").load(" List")
});
}
Thank you in advanced and if I need include further info don't hesitate to ask.
From this comment
as far as i know the success function will be called on success you should use complete, A function to be called when the request finishes (after success and error callbacks are executed). isnt that what you want ? – Muhammad Omer Aslam
I managed to solve the issue simply moving the $.load clause from the success: option to a complete: option. (I think they're called options)
I haven't managed error handling yet, even inside my head but at least it works as it should if everything is entered properly.
Thanks!
(Won't let me mark as answered until 2 days)
I would first create an AJAX call inside a function which runs when the page loads to populate the list.
window.onload = populatelist();
function populatelist() {
$.ajax({
type: "POST",
url: "list.php",
data: {function: 'populate'},
success: function(data) { $("#list").html("data"); }
});
}
Note: #list refers to <div id="list> and your list should be inside this.
I would then have another AJAX call inside a different function which updates the database when the form is submitted. Upon success, it will run the populatelist function.
function save() {
var name = document.getElementById('name');
var email = document.getElementById('email');
var telephone = document.getElementById('telephone');
$.ajax({
type: "POST",
url: "list.php",
data: {function: 'update', name: name.value, email: email.value, telephone: telephone.value },
success: function() { populatelist(); }
});
}
list.php should look like this:
<?php
if($_POST['function'] == "populate") {
// your code to get the content from the database and put it in a list
}
if($_POST['function'] == "update") {
// your code to update the database
}
?>
I will show you piece of solution that I use in my project. I cannot say it is optimal or best practices, but it works for me and can work for you:
PHP:
function doLoadMails(){
//initialize empty variable
$mails;
$conn = new mysqli($_POST['ip'], $_POST['login'], $_POST['pass'], $_POST['db']);
// Check connection
if ($conn->connect_error) {
die("");
}
//some select, insert, whatever
$sql = "SELECT ... ... ... ";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row, j is counter for rows
$j =0;
while($row_a = $result->fetch_assoc()) {
//for each row, fill array
$mails[$j][0] = $row_a["name"] ;
$mails[$j][1] = $row_a["mail"] ;
$mails[$j][2] = $row_a["language"] ;
$j++;
}
}
//if $mails has results (we added something into it)
if(isset($mails)){
echo json_encode($mails);/return json*/ }
else{
//some error message you can handle in JS
echo"[null]";}
}
and then in JS
function doLoadMails() {
$.ajax({
data: { /*pass parameters*/ },
type: "post",
url: "dataFunnel.php",
success: function(data) { /*data is a dummy variable for everything your PHP echoes/returns*/
console.log(data); //you can check what you get
if (data != "[null]") { /*some error handling ..., in my case if it matches what I have declared as error state in PHP - !(isset($mails))*/ }
}
});
Keep in mind, that you can echo/return directly the result of your SQL request and put it into JS in some more raw format, and handle further processing here.
In your solution, you will probably need to echo the return code of the INSERT request.
Alright guys I'm trying to make a filter system for posts using ajax and a select box. I am able to get the value from the select box no problem. But my issue is that when I try to include the selected value in my PHP file it doesn't do anything. I have a file called public_wall.php. This file contains PHP, Javascript, and HTML. How can I refresh this div whenever a user selects a different filter option? Basically I need the selected value to be passed onto my public_wall.php file and then I want to plug it into the PHP function that fetches the posts thats's in the same file and then I want to refresh that same file to display the filtered results. Here is my Javascript code.
$("#postRatings").on("click", function(e) {
selectedRatingFilter = $("#postRatings option:selected").val();
var dataString = "timeFilter="+selectedRatingFilter;
jQuery.ajax({
type: "POST",
url: site_url+"public_wall.php",
data: dataString,
dataType: "json",
cache: false,
success: function(response){
hideSpinner();
jQuery('#postsPagingDiv').remove();
jQuery('#wsc_midbox').html(jQuery(response.htmls).fadeIn(400));
setpost_ids(response.all_post_id);
jQuery('#paging_in_process').val(0);
}
});
});
When the dataType is set to "json" nothing happens. But when it is set to html it prints some javascript code. Please help. The PHP file is too large to include here, but it basically contains PHP, HTML, and Javascript and some PHP functions that do sql queries. What is the best way to achieve a filter mechanism for my setup?
And on the public_wall.php file I want to get the value like so:
$ratingFilter = isset($_REQUEST['timeFilter']) ? intval($_REQUEST['timeFilter']) : 0;
And then plug it into the PHP function that fetches the posts which is in the public_wall.php file also so that I can filter the posts based on the selected value. And then finally I want to refresh the public_wall.php file with the new results. I hope that makes sense. Please help.
This is the output when I set my dataType to "html"
<script>
function refreshPosts() {/* only posts comments likes and count updated. */
var posts = jQuery("#all_post_id").val();
var arrays = posts.split(',');
var dataString = "postids="+posts;
jQuery.ajax({
type: "POST",
url: site_url+"includes/update_wall.php",
data: dataString,
dataType: "json",
cache: false,
success: function(response) {
var x = response;
//############ skip posts whose comments are being read by users
var ExemptedPostsIDs = jQuery("#exemptedPostsID").val();
var ExemptedArray = ExemptedPostsIDs.split(',');
ExemptedArray = ExemptedArray.sort();
//////////////
for (i=0; i<arrays.length; i++) {
var val = 'row'+arrays[i];
if(x[val]) {
if(!inArray(arrays[i], ExemptedArray))
jQuery("#ajax_wall_"+arrays[i]).html(x[val]);
} else {
jQuery('#PostBoxID'+arrays[i]).parent().fadeOut(500);
}
}
}
});
}
function inArray(needle, haystack) {
var length = haystack.length;
for (var i = 0; i < length; i++) {
if(haystack[i] == needle) return true;
}
return false;
}
function refreshWall() {/* loads new posts real time */
var posts = jQuery("#all_post_id").val();
var pageUsing = jQuery('#pageUsing').val();
var dataString = "update_posts=1&postids="+posts+'&pagex='+pageUsing;
jQuery.ajax({
type: "POST",
url: site_url+"public_wall.php",
data: dataString,
dataType: "json",
cache: false,
success: function(response) {
if(response.all_post_id) {
jQuery('#wsc_midbox').prepend(jQuery(response.htmls).fadeIn(400));
setpost_ids(response.all_post_id);
}
}
});
}
</script>
I suggest you keep the form with select element and any JavaScript on the outer frame.
Via ajax, only load the results to a seperate DIVision below that.
When you put an Ajax response to a div, any JavaScript inside it will not be executed.
For the best throughput with Ajax, you should consider loading a json response via Ajax and create HTML elements on the client side. That way it becomes much easier to pull additional variables to front-end JS from server side along with the same request/response.
But that becomes bit difficult when you have a template engine in the back-end. You can still send the HTML content in a json value, so you can easily pass the "all_post_id" as well..
I have this laravel code in my controller detach function.
$input = Input::all();
$product= Products::findOrFail($input['product_id']);
$product->tags()->detach($input['tag_id']);
$product= Products::where('customer_id', Auth::user()->customers_id)->get();
return view('products.tagsdelete', [
'products' => $product,
]);
This works fine, it deletes the tag realation from my pivot table. The only thing that bugs me it that I don't want to reload the page everytime I press the delete button on my view.
( Of course I could make a selection of all tags the user want to delete, but I want to to this live with Ajax )
My problem is, I couldn't find anything that helps me with detachment from laravel + Ajax. I'm quite okay with Javascript and Jquery but Ajax is still a new thing for me..
So can anybody help me there? I'm really stuck.
Thanks for taking your time :)
#Wiriya Rungruang
current controller code:
public function detach()
{
$input = Input::all();
$product= Products::findOrFail($input['product_id']);
$product->tags()->detach($input['tag_id']);
$product= Products::where('customer_id', Auth::user()->customers_id)->get();
}
my button:
<button type="submit" class="delete-tag-btn" data-product_id="{{ $product->id }}" data-tag_id="{{ $tag->id }}"><i class="glyphicon glyphicon-trash"></i></button>
at the bottom of the code the JS:
<script>
$(".delete-tag-btn").on('click', function(){
var url = "{{ route('detach') }}"; // Url to deleteTag function
url += "product_id=" + $(this).data('product_id');
url += "&tag_id=" + $(this).data('tag_id');
// Now url should look like this 'http://localhost/deletetag?product_id=2&tag_id=5
// Send get request with url to your server
$.get(url, function(response){
alert("success");
});
});
</script>
First : You should create function detach tag from product in your controller and return status success or failure(or nothing)
In your controller
function detachTag(){
$input = Input::all();
$product= Products::findOrFail($input['product_id']);
$product->tags()->detach($input['tag_id']);
$product= Products::where('customer_id', Auth::user()->customers_id)->get();
return "Some state for checking it a success or not";
}
Second : Create javascript function for checking when you click on delete button send request with parameter to function that we created in the first step and rerender or remove that tag from your HTML page
**Parameter is mean product_id and tag_id that your want to detach it
In your js
$(".delete-tag-btn").on('click', function(){
var url = "localhost/deletetag?"; // Url to deleteTag function
url += "product_id=" + $(this).data('product_id');
url += "&tag_id=" + $(this).data('tag_id');
// Now url should look like this 'http://localhost/deletetag?product_id=2&tag_id=5
// Send get request with url to your server
$.get(url, function(response){
// Do what you want
});
});
So when you click on .delete-tag-btn It will send request for detach it
While you can right a simple ajax call, send data and return html and replace it with the old html
lets begin :)
first step is to write ajax, and send it when form is submit or any button is clicked (as per your code)
this one is sample ajax, just fill in your data in it.
var BASEURL = window.location.origin + "/your_domain_name/";
$.ajax({
url: BASEURL + "your_route",
type: "POST/GET", //any_one
data: {
// Your data comes here (object)
},
beforeSend: function () {
},
success: function (response) {
console.log(response); // your html in return
},
complete: function (response) {
}
});
now a call will be send with your data to controller respective to specified route you mentioned, processing will be normal.
It will return only html. You can do whatever you want with this html.
One important problem you might face if considering these instructions is, right now the view you are returning is probably of whole page (because the page is been refresh every time), but if you are thinking to replace it with new html, your will only have to return that part of the page may be a single row or something like that. So break your view in many sub views. Php #include(//path) (blade) might come handy. Thats how I use to work. :)
I am trying to get some data from the database. I create a function that is located in functions.php file that return a value. On another page, I create a variable and just get that value. I was trying to use the onkey to check the database but then I realize that i need to know the amount of tickets even if they don't type anything.
Here is the function:
function.php
function is_ticket_able($conn){
$query = "select number_of_tickets from [dbo].[TICKETS] " ;
$stmt = sqlsrv_query($conn, $query);
while ($row = sqlsrv_fetch_array($stmt)) {
$amount_of_tickets = $row['number_of_tickets'];
}
return $amount_of_tickets;
}
And, I am trying to check the database (without refreshing the page) and get the value on this page:
application.php
$amount_of_tickets = is_ticket_able($conn);
Then, I just check that $amount_of_tickets is not 0 or 1. Because if is one then some stuff have to change.
I am doing this (inside application.php):
if($amount_of_tickets !=0){
//show the form and let them apply for tickets.
//also
if($amount_of_tickets == 1){
//just let them apply for one ticket.
}
}
EDIT: I saw that AJAX would be the right one to use, but I am so confuse using it.
UPDATE:
function.php
function is_ticket_able($conn){
$query = "select number_of_tickets from [dbo].[TICKETS_LKUP] " ;
$stmt = sqlsrv_query($conn, $query);
while ($row = sqlsrv_fetch_array($stmt)) {
$ticket = $row['number_of_tickets'];
}
return $ticket;
}
application.php
$amount_of_tickets = is_ticket_able($conn);
<script type="text/javascript">
var global_isTicketAble = 0;
checkTicket();
function checkTicket()
{
$.ajax(
{
url: "application.php",
method: 'GET',
dataType: 'text',
async: true,
success: function( text )
{
global_isTicketAble = text;
alert(global_isTicketAble);
if( global_isTicketAble == 0 ){
window.location.replace("http://www.google.com");
}
setTimeout( checkTicket, 5000 ); // check every 5 sec
}
});
}
</script>
So, now the problem is that when I alert(global_isTicketAble); it doesn't alert the value from the database but it does alert everything that is inside application.php...Help plzzz
Server side
Assuming you need to check $amount_of_tickets periodically and this can be computed into application.php, inside that file you'll have
<?php
// $conn is defined and set somewhere
$amount_of_tickets = is_ticket_able($conn);
echo $amount_of_tickets;
exit(0);
?>
This way when the script is invoked with a simple GET request the value is returned in the response as simple text.
Client Side
ajax is the way to go if you want to update information on page without reloading it.
Below is just a simple example (using jQuery) that may be extended to fit your needs.
The code below is a JavaScript snippet. A global is used to store the value (globals should be avoided but it's just for the purpose of the example)
Then a function is invoked and the updated value is fetched from function.php script.
The function -prior termination- schedules itself (with setTimeout) to be re-invoked after a given amount of milliseconds (to repeat the fetch value process).
var global_isTicketAble = 0;
checkTicket();
function checkTicket()
{
$.ajax(
{
url: "application.php",
method: 'GET',
dataType: 'text',
async: true,
success: function( text )
{
global_isTicketAble = text;
// eventually do something here
// with the value just fetched
// (ex. update the data displayed)
setTimeout( checkTicket, 5000 ); // check every 5 sec
}
}
}
Note that $.ajax() sends the request but does not wait for the response (as async is set to true). When the request is received the function specified as success is executed.
Complete jQuery ajax function documentation can be found here
http://api.jquery.com/jquery.ajax/
I assume that you have a page (application.php) that displays a table somewhere.
And that you wish to fill that table with the data found in you database.
I'm not sure about WHEN you want these data to be refreshed.
On button click or periodically (like ervery 5 seconds)... But it doesn't matter for what I explain below.
In application.php:
Assemble all your page as you already know how.
But inside it, somewere, just insert an empty div where your table should show:
<div id="dynamicContent"></div>
Also add this script at the bottom of the page:
<script>
function getData(){
PostData="";
$.ajax({
type: "POST",
url: "function.php",
data: PostData,
cache: true,
success: function(html){
$(Destination).html(html);
}
});
}
getData(); // Trigger it on first page load !
</script>
There is 2 variables here... I named it "PostData" and "Destination".
About PostData:
You can pass data collected on the client side to your PHP function if needed.
Suppose you'd need to pass your user's first and last name, You'd define PostData like this:
Fname=$("#Fname").val(); // user inputs
Lname=$("#Lname").val();
PostData="Fname="+Fname+"&Lname="+Lname;
In your function.php, you will retreive it like this (like any normal POST data):
$Fname=$_POST['Fname'];
$Lname=$_POST['Lname'];
If you do not need to pass data from your client side script to you server side PHP... Just define it empty.
PostData="";
Then, about Destination:
This is the place for the empty "dynamic div" id ( I named it "dynamicContent" above).
Don't forget about the hashtag (#) for an id or the dot for a class.
This is a jQuery selector.
So here, PostData would be defined like this:
Destination="#dynamicContent";
The result of the ajax request will land into that "dynamic div".
This WILL be the result of what's defined in function.php..
So, if you follow me, you have to build your table in function.php...
I mean the part where you do your database query and your while fetch.
echo "<table>";
echo "<tr><th>column title 1</th><th>column title 2</th></tr>"
while ($row = sqlsrv_fetch_array($stmt)){
echo "<tr><td>" . $row['data1'] . "</td><td>" . $row['data2'] . "</td></tr>";
}
echo "</table>";
So if you have no data, the table will be empty.
You'll only get the table and table headers... But no row.
There is then no need for a function that checks if there is data or not.
Finally... About the trigger to refresh:
In application.php, you may place a button that fires getData()... Or you may define a setInterval.
It's up to you.
This is how I use ajax to refresh part of a page without reloading it completly.
Since ajax is new to you, I hope this answer will help.
;)
------------------------
EDIT based on Ariel's comment (2016-05-01)
Okay, I understand! Try this:
In application.php:
<div id="dynamicDiv"></div>
<script type="text/javascript">
// timer to trigger the function every seconds
var checkInterval = setInterval(function(){
checkTicket();
},1000);
function checkTicket(){
$.ajax({
type: "POST",
url: "function.php",
data: "",
cache: true,
success: function(html){
$("#dynamicDiv").html(html);
}
});
}
function noMoreTikets(){
clearInterval(checkInterval);
window.location.replace("http://www.google.com");
}
</script>
In function.php:
// Remove the "function is_ticket_able($conn){" function wrapper.
// Define $conn... Or include the file where it is defined.
// I assume that your query lookup works.
$query = "select number_of_tickets from [dbo].[TICKETS_LKUP] " ;
$stmt = sqlsrv_query($conn, $query);
while ($row = sqlsrv_fetch_array($stmt)) {
$ticket = $row['number_of_tickets'];
}
// Add this instead of a return.
if($ticket>0){
echo "There is still some tickets!"; // Text that will show in "dynamicDiv"
}else{
?>
<script>
$(document).ready(function(){
noMoreTikets();
});
</script>
<?php
}
Remember that your PHP scripts are executed server-side.
That is why your "return $ticket;" wasn't doing anything.
In this ajax way to call function.php, its script is executed alone, like a single page, without any relation with application.php, which was executed long ago.
It produces text (or javascript) to be served to the client.
If you want to pass a PHP variable to the client-side javascript, you have to echo it as javascript.
So here, if the PHP variable $ticket is more than zero, some text saying that there is still tickets available will show in "dynamicDiv" and the application page will not be refreshed. I suppose it shows a button or something that allows students to get a ticket.
Else, it will be the javascript trigger to "noMoreTikets()" that will land in the "dynamicDiv".