My ajax call output is always showing 0 as output don't know why
In functions.php I have this code
function get_data() {
$abc = '1';
$result = $wpdb->get_results("SELECT * FROM ".$wpdb->options ." WHERE option_name LIKE '_transient_%'");
echo $result; //returning this value but still shows 0
wp_die();
}
add_action( 'wp_ajax_nopriv_get_data', 'get_data' );
add_action( 'wp_ajax_get_data', 'get_data' );
And my ajax call is in a javascript
$('body').on("click", ".re-reset-btn", function(e){
var panel = $('#re-compare-bar');
$.ajax({
type : "GET",
dataType : "json",
url : "/wp-admin/admin-ajax.php",
data : {action: "get_data"},
success: function(response) {
alert("Your vote could not be added");
alert(response);
}
});
$("#re-compare-bar-tabs div").remove();
$('.re-compare-icon-toggle .re-compare-notice').text(0);
});
I'm making ajax call in wordpress without use of plugin but not getting what I'm passing.Even If I output $abc still it shows 0.
In backend there is global ajaxurl variable defined by WordPress itself.
This variable is not created by WP in frontend. It means that if you want to use AJAX calls in frontend, then you have to define such variable by yourself.
Good way to do this is to use wp_localize_script.
Let's assume your AJAX calls are in my-ajax-script.js file, then add wp_localize_script for this JS file like so:
function my_enqueue() {
wp_enqueue_script( 'ajax-script', get_template_directory_uri() . '/js/my-ajax-script.js', array('jquery') );
wp_localize_script( 'ajax-script', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
}
add_action( 'wp_enqueue_scripts', 'my_enqueue' );
After localizing your JS file, you can use my_ajax_object object in your JS file:
jQuery.ajax({
type: "post",
dataType: "json",
url: my_ajax_object.ajax_url,
data: formData,
success: function(msg){
console.log(msg);
}
});
Actually, WordPress comes with a handy function to access admin-ajax.
Requirements
In wp-admin you do not need to do anything, the js library is always loaded
In the front-end you need to enqueue the script wp-util, like this:
add_action( 'wp_enqueue_scripts', 'my_enqueue_function' );
function my_enqueue_function() {
// Option 1: Manually enqueue the wp-util library.
wp_enqueue_script( 'wp-util' );
// Option 2: Make wp-util a dependency of your script (usually better).
wp_enqueue_script( 'my-script', 'my-script.js', [ 'wp-util' ] );
}
The JS Library
The wp-util script contains the wp.ajax object that you can use to make ajax requests:
wp.ajax.post( action, data ).done( okCallback ).fail( errCallback )
Your example:
wp.ajax.post( "get_data", {} )
.done(function(response) {
alert("Your vote could not be added");
alert(response);
});
PHP code
Of course, you still need to create the wp_ajax_* hooks in your PHP script.
add_action( 'wp_ajax_nopriv_get_data', 'my_ajax_handler' );
add_action( 'wp_ajax_get_data', 'my_ajax_handler' );
function my_ajax_handler() {
wp_send_json_success( 'It works' );
}
Tip:
For Ajax responses WordPress provides two functions:
wp_send_json_success( $my_data ) and wp_send_json_error( $my_data ) - both functions return a JSON object and instantly terminate the request (i.e., they exit;)
I had the same problem. I was new to WordPress. Therefore, I am explaining here so that every new learner can understand how ajax is calling in WordPress.
First, create a function in function.php file that resides under wp-content/theme/selected_theme folder. Here, selected_theme maybe your theme name.
In the above question, a function is created with the name get_data();
function get_data() {
echo "test";
wp_die(); //die();
}
add_action( 'wp_ajax_nopriv_get_data', 'get_data' );
add_action( 'wp_ajax_get_data', 'get_data' );
in the above two lines,
The add_action method is used to implement the hook. Here, I am passing the two parameters, first is wp_ajax_nopriv_get_data. Here, you can replace get_data with your choice. and the section parameter is get_data which is the function name that you want to call.
In the second add_action, I am passing the two parameters, first is wp_ajax_get_data. Here, you can replace get_data with your choice. and the section parameter is get_data which is the function name that you want to call.
Here, wp_ajax_nopriv call if the user is not logged in and wp_ajax called when the user is logged in.
jQuery.ajax({
type: "post",
dataType: "json",
url: "/wp-admin/admin-ajax.php", //this is wordpress ajax file which is already avaiable in wordpress
data: {
action:'get_data', //this value is first parameter of add_action
id: 4
},
success: function(msg){
console.log(msg);
}
});
Add admin-ajax.php by using admin_url('admin-ajax.php');
<script type="text/javascript">
$('body').on("click", ".re-reset-btn", function(e){
var panel = $('#re-compare-bar');
$.ajax({
type : "POST",
dataType : "json",
url : "<?php echo admin_url('admin-ajax.php'); ?>",
data : {action: "get_data"},
success: function(response) {
alert("Your vote could not be added");
alert(response);
}
});
$("#re-compare-bar-tabs div").remove();
$('.re-compare-icon-toggle .re-compare-notice').text(0);
});
</script>
<form type="post" action="" id="newCustomerForm">
<label for="name">Name:</label>
<input name="name" type="text" />
<label for="email">Email:</label>
<input name="email" type="text" />
<label for="phone">Phone:</label>
<input name="phone" type="text" />
<label for="address">Address:</label>
<input name="address" type="text" />
<input type="hidden" name="action" value="addCustomer"/>
<input type="submit">
</form>
<br/><br/>
<div id="feedback"></div>
<br/><br/>
functions.php
wp_enqueue_script('jquery');
function addCustomer() {
global $wpdb;
$name = $_POST['name'];
$phone = $_POST['phone'];
$email = $_POST['email'];
$address = $_POST['address'];
if ( $wpdb->insert( 'customers', array(
'name' => $name,
'email' => $email,
'address' => $address,
'phone' => $phone
) ) === false ) {
echo 'Error';
} else {
echo "Customer '".$name. "' successfully added, row ID is ".$wpdb->insert_id;
}
die();
}
add_action('wp_ajax_addCustomer', 'addCustomer');
add_action('wp_ajax_nopriv_addCustomer', 'addCustomer');
javascript
<script type="text/javascript">
jQuery('#newCustomerForm').submit(ajaxSubmit);
function ajaxSubmit() {
var newCustomerForm = jQuery(this).serialize();
jQuery.ajax({
type: "POST",
url: "/wp-admin/admin-ajax.php",
data: newCustomerForm,
success: function(data){
jQuery("#feedback").html(data);
}
});
return false;
}
</script>
If you are getting 0 in the response, it means your ajax call is working correctly.
But, you have not defined $wpdb as a global variable in your function get_data.
Check your error log, you must be seeing error there.
Try:
function get_data() {
global $wpdb;
$abc = '1';
$result = $wpdb->get_results("SELECT * FROM ".$wpdb->options ." WHERE option_name LIKE '_transient_%'");
echo $result; //returning this value but still shows 0
wp_die();
}
Step 1: Add ajax 'wp_enqueue_script' file in function file where you have to add other 'wp_enqueue_script' or 'wp_enqueue_style' files
wp_enqueue_script( 'ajax-script', get_template_directory_uri() . '/js/my-ajax- script.js', array('jquery') );
wp_localize_script( 'ajax-script', 'my_ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
Step 2:Now you need to create function, where you want to get response, using ajax
e.g below
add_action('wp_footer','add_ajaxex_in_footer');
function add_ajaxex_in_footer()
{ ?>
<script type="text/javascript">
jQuery('#sbmtbtn').click(function(){
jQuery.ajax({
type:"POST",
url:my_ajax_object.ajax_url,
data: {action:'my_special_ajax_call_enroll_cours'},
success:function(res){
console.log(res);
}
});
});</script><?php
}
Step 3: Now you have to create function where you have to write query,
add_action('wp_ajax_my_special_ajax_call_enroll_cours', 'enroll_cours');
add_action('wp_ajax_nopriv_my_special_ajax_call_enroll_cours', 'enroll_cours');
function enroll_cours()
{
echo "Here you van write Query or anything";
exit;
}
=> If you want to fire ajax request after onClick button, just pass the button ID
<input type="button" id="sbmtbtn" name="Save">
Here how to make in plain vanilla js the AJAX call in WordPress.
var urlToajax=jsajaxe_S.ajaxurl;
function P_lifg(){
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("demo").innerHTML = this.responseText;
document.getElementById("demo2").innerHTML = urlToajax+ "?action=testfirst";
}
};
xmlhttp.open("GET", urlToajax+ "?action=testfirst", true);
xmlhttp.send(0);
}
See on this blog, what to add functions.php and template html to get this work, also reasonings why there is no data in vanilja js unlike jQuery, but just action
Here add_actions in functions.php:
add_action( 'wp_ajax_testfirst', __NAMESPACE__ .'\\FunctionTF' );
add_action( 'wp_ajax_nopriv_testfirst', __NAMESPACE__ .'\\FunctionTF');
Add this function over that, here now this function:
function FunctionTF(){
exit( "Hola hola" );
}
See explanation why? code in "exit" in my blog
Here add this html on some wp-template
<div id="demo"></div>
<div id="demo2"></div>
<button id="spesial_button" onclick="P_lifg()">I am spesial</button>
See rest in: https://praybook2.blogspot.com/2021/03/AJAX-plain-vanilla-js-wp-and-namespace.html
Related
In a template file, I need to get the new data from the frontend when a user double-clicks and changes the record on a table. I tested and the console shows that the request is correct, however whatever I tried the admin-Ajax returns always Bad Request!
The PHP code waiting for the request in the template file is:
add_action( "wp_ajax_update_records", "update_records" );
add_action( "wp_ajax_nopriv_please_login", "please_login" );
function update_records(){
global $wpdb;
$colName = "'" . $_POST['upd_column'] . "'";
$wpdb->update('Reservations',
array(
$colName => $_POST['upd_value']
),
array( 'ReservationID' => $_POST['record_id'] )
);
wp_die();
};
function please_login() {
echo "You must log in to work";
die();
}
The jQuery code sending the request is:
jQuery('#work td').dblclick(
function dolly_script() {
var text = jQuery(this).text();
var headerName = jQuery(this).attr('headers');
jQuery(this).text('');
jQuery('<input />').appendTo(jQuery(this)).val(text).select().blur(
function() {
var newVal = jQuery(this).val();
var selectionID = jQuery(this).closest("tr").children("td[headers='ReservationID']").text();
jQuery(this).parent().text(newVal).find('input').remove();
jQuery.ajax({
url: '../wp-admin/admin-ajax.php',
type: 'POST',
dataType : "json",
data: JSON.stringify({
action: 'update_records',
record_id: selectionID,
upd_column: headerName,
upd_value: newVal
})
})
})
});
I tried also without JSON.stringify and without datatype.
In functions file I have also added:
wp_register_script( 'dolly_script', '/wp-content/themes/bootcms/work.js');
$myAjax = array( 'ajax_url' => admin_url( 'admin-ajax.php' ) );
wp_localize_script( 'dolly_script', 'ajax_url', $myAjax );
wp_enqueue_script( 'dolly_script' );
Inside the "add_action( 'wp_enqueue_scripts', 'myfunction' );" declaration.
If anyone could help is hugely appreciated, I spent a whole day but I found no solution.
I solved the problem. Here is the solution in case it helps others:
I moved the PHP function into the functions.php file.
I am new to wordpress and I need to call a php function from ajax but my code is not working. I was reading about the ajax standard in wordpress, but I don't know what happens, I have followed several tutorials and answers in this blog and they all talk about the action to enqueue the javascript file, but the problem continues and I don't know what I'm doing wrong. To continue I share my code.
This is my function to enqueue my javascript file:
function enqueue_script() {
$ajax_script = 'popup';
$uri = get_stylesheet_directory_uri() . '/assets/front/js/popup.js';
wp_register_script($ajax_script, $uri);
wp_localize_script( $ajax_script, 'ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
wp_enqueue_script( $ajax_script, $uri, array('jquery'), rand(111,9999), 'all');
}
add_action( 'wp_enqueue_scripts', 'enqueue_script' );
My php function to call, this is in an update_request_status.php file:
function update_status(){
echo "<script>alert('I am update function!!!!');</script>";
}
This is my js action, :
$('.btn-confirm').click(function(){
var url_string = window.location.href;
var url = new URL(url_string);
var request_id = url.searchParams.get("request_id");
$.ajax({
url: ajax_object.ajaxurl,
type: 'POST',
cache: false,
data: { "request_id": request_id } + '&action=change_status',
success:function(data){
alert("YEs I doing");
},
error:function(){
alert("¡Error en el servidor, contancte al administrador!");
}
});
window.location.href = "http://localhost:8081/megafrescos/pendientes";
$('#msg-remove-request').css('display', 'none');
});
And finally, this is my modal with the button that triggers the action to call my php function:
<div class="warning-msg" id="msg-remove-request">
<button class="btn-close" id="btn-close">×</button>
<h5>¿Dar por concluida esta solicitud ? </h5><hr>
<?php echo fix_request()?>
<div class="confirm-btns">
<button class="btn-confirm">Aceptar</button>
<button class="btn-close">Cancelar</button>
</div>
<div class='update-status'></div>
</div>
Can somebody help me?
There are multiple ways to do it. First I'll show the one you were working on.
You'll need to define two actions with wp_ajax_{action} and wp_ajax_nopriv_{action}, where {action} is a placeholder for a keyword to identify the function that needs to be called. The former is only works when users are logged in. The latter is for request from unauthenticated users.
Both hooks should refer to the same function that you are trying to call.
The example below returns either the request_id that has been sent or a string with 'Nothing' as a response, just to test things out.
add_action( 'wp_ajax_nopriv_update_status', 'update_status' ) ;
add_action( 'wp_ajax_update_status', 'update_status' );
function update_status() {
$request_id = isset( $_POST[ 'request_id' ) ) ?
$_POST[ 'request_id' ) :
'Nothing';
echo $request_id;
}
The other, and more modern approach is using the REST API. This enables you to create an endpoint where you get more controls over de URL and sanitizing.
Your endpoint would look something like this
https://yourwebsite.com/wp-json/api/v1/update. You can get the static URL to the REST endpoint by using get_rest_url(), like you did with admin_url( 'admin-ajax.php' ) and should add that to your wp_localize_script function in the enqueue file.
The endpoint checks the methods allowed and calls the callback specified in the options array. From there you can access the $request object which contains info like the given arguments from your request.
Then return a response to read on the frontend.
add_action( 'rest_api_init', 'register_update_endpoint' );
function register_update_endpoint() {
// Register new route to get data from
register_rest_route( 'api/v1', // Mandatory prefix with version
'/update/', // Name of the route, can be anything.
array(
'methods' => array( 'POST' ), // Allowed methods.
'callback' => 'update_status' // Function to call when URL is called.
)
);
function update_status( WP_REST_Request $request ) {
$request_id = $request->has_param( 'request_id' ) ?
$request->get_param( 'request_id' ) :
'Nothing';
$response = new WP_REST_Response( $request_id; );
return $request_id;
}
}
I have created a plugin for user to check delivery option is available in their location or not.
backend code is working fine like, I can add zipcode. data is showing in the admin table.
in the frontend am trying to check data via ajax call where getting response as 0 with if statement even when I enter an existing zip code or wrong.
Please help where am wrong. Thanks.
Here is JavaScript Ajax Code
jQuery(document).ready(function() {
var zipcodeInput = jQuery("#checkzipcode").find("input[name='checkzipcode']");
var zipcodeSubmit = jQuery("#ajax-form");
zipcodeSubmit.submit(function(e) {
e.preventDefault();
jQuery.ajax({
type: "POST",
url: my_action_callback.ajaxurl,
dataType: 'html',
data: {
action: 'my_action_callback',
checkzipcode: zipcodeInput.val()
},
success: function (data) {
jQuery('#zipcode-result').html(data);
},
error: function (data) {
console.log('error');
}
});
});
});
Here is THML Code
function check_zipcode_for_delivery_frontend(){ ?>
<div class="woo-zcd-form">
<form method="POST" id="ajax-form">
<label>Enter Zipcode:</label>
<input type="text" name="checkzipcode" id="checkzipcode" required>
<input type="submit" name="submit" value="Check Zipcode" id="submit-zipcode">
</form>
</div>
<div id="zipcode-result"></div>
<?php }
add_shortcode('check_zipcode_delivery', 'check_zipcode_for_delivery_frontend');
Here is PHP Code
add_action('wp_enqueue_scripts', function() {
wp_enqueue_script( 'my_custom_script', plugin_dir_url( __FILE__ ) . 'assets/js/custom.js', array('jquery') );
wp_enqueue_script( 'jquery' );
wp_localize_script( 'my_custom_script', 'my_action_callback', array( 'ajaxurl' => admin_url('admin-ajax.php') ) );
});
add_action('wp_ajax_my_action_callback', 'my_action_callback');
add_action('wp_ajax_nopriv_my_action_callback', 'my_action_callback');
function my_action_callback() {
global $wpdb;
$table_name = $wpdb->prefix . "deliverybyzipcode";
$checkzipcode = $_POST['checkzipcode'];
$sql = "SELECT * FROM ".$table_name." WHERE delivery_zipcode = '$checkzipcode'";
$result = $wpdb->query($sql);
$rows = $result->num_rows;
if($rows == $checkzipcode) {
echo "Yes! Our delivery service is available in your area.";
}
else {
echo 'Sorry! we are currently no delivering in your area.';
}
}
I think this line is causing the trouble.
Change this line $sql = "SELECT * FROM ".$table_name." WHERE delivery_zipcode = '$checkzipcode'";
to this one $sql = "SELECT * FROM ".$table_name." WHERE delivery_zipcode = '".$checkzipcode."'";
It is not clear from your question what is the type of delivery_code in your database so you should pay attention to that as well. And of course, take care of SQL injection.
I'm trying to make some SQL queries using PHP in Wordpress, to auto populate and check values on a gravity form against the existing database.
To do that however, I'm going to need to pass some javascript variables to php, then use that to interact and pull that data back to the form. As someone with minimal web dev background, easier said then done.
My main issue is with an AJAX call that properly carries over a value, but only to the action function. All other calls will show null (I assume due to scoping, but globals don't seem to help).
The main relevant PHP is in a custom plugin as follows:
$address = 0;
function my_enqueue() {
wp_register_script( 'lead-scheduler', null);
wp_enqueue_script( 'lead-scheduler', plugins_url( '/lead_ajax.js', __FILE__ ), array('jquery') );
wp_localize_script( 'lead-scheduler', 'leadajax', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
wp_enqueue_script( 'jquery' );
wp_register_script( 'lead_ajax', null);
wp_enqueue_script( 'lead_ajax' );
}
add_action( 'init', 'my_enqueue' );
function handle_request(){
//Check post address, then apply to global variable
echo $_POST['address'] . "\n";
global $address;
$address = $_POST['address'];
echo $address . "\n";
wp_die("RIP");
}
add_action( 'wp_ajax_handle_request', 'handle_request' );
add_action( 'wp_ajax_nopriv_handle_request', 'handle_request' );
function functionCaller() {
if (is_page ('')) {
?>
<script type="text/javascript">
jQuery(document).ready(function ($) {
$(function(){
var addressField = document.getElementById('input_22_2');
var temp;
//Set up event listener
addressField.onchange = addressCheck;
function addressCheck(){
//Get foreign script
$.getScript("/wp-content/plugins/lead-scheduler/lead_ajax.js", function(){
//Wait until done to execute console.log
$.when(adrCheck()).done(function(){
console.log("Logging: " + "<?php global $address; echo $address ?>");
});
});
}
});
});
</script>
<?php
}
}
add_action('wp_head', 'functionCaller'); ?>
The AJAX call comes from a JS file that I call to:
//AJAX
function adrCheck(){
jQuery(document).ready( function() {
console.log("called")
var addressField = document.getElementById('input_22_2').value;
jQuery.ajax({
type : "post",
url : leadajax.ajax_url,
data : {action: "handle_request", address: addressField},
success: function(response) {
console.log(response)
},error: function(response){
console.log(response);
}
})
})
}
The call seems to work, as the echo in handle_request() works fine. But calling that variable anywhere else returns null. $.when.done doesn't seem to do much, nor does anything synchronous.
I'm sure there's something super elementary that I'm missing, but I can't seem to find it.
My plugin shows 2 input fields and a button wherever you put the placeholder in WP. After clicking the button it calls a js function which should start a php function using AJAX but somehow i get the error message: "reference error myAjax is not defined"
wsn-plugin.php
function wpb_new_company(){
echo '<input type="text" class="form-control" id="companyName" placeholder="Firmenname">';
echo '<input type="text" class="form-control" id="companyYear" placeholder="Jahr">';
echo '<button onclick="myAjax();" id="btnNewCompany" type="submit" class="btn btn-primary">Erstellen</button>';
}
script.js (which handles all the events)
function myAjax() {
alert("myAjax gestartet");
$.ajax({
type: "POST",
url: 'localhost/wp/wp-content/plugins/wsn-plugin/wsn-plugin.php',
data:{action:'call_this'},
success:function(html) {
alert(html);
}
});
alert("myAjax ausgeführt");
}
and again wsn-plugin.php which should then run some function
if($_POST['action'] == 'call_this') {
echo "i reached it";
}
Changed
function wpb_adding_scripts() {
wp_register_script('wsn_script', plugins_url('script.js', __FILE__), array('jquery'),'1.1', true);
wp_enqueue_script('wsn_script');
}
add_action( 'wp_enqueue_scripts', 'wpb_adding_scripts' );
and js script:
function myAjax() {
alert("myAjax gestartet");
$.ajax({
type: "POST",
url: '/wp/wp-content/plugins/wsn-plugin/wsn-plugin.php',
data:{action:'call_this'},
success:function(html) {
alert(html);
}
});
alert("myAjax ausgeführt");
}
no chrome shows the error message:
localhost says fatal error uncaught error call to undefined function add_action() in wsn-plugin.php:16
It sounds like you did not load your javascript file from your plugin using wp_register_script() and wp_enqueue_script().
EDIT: There are other issues here but I ignored them since they were not the cause of the error you got. You will want to read https://codex.wordpress.org/AJAX_in_Plugins and pay special attention to the section "Separate JavaScript File". That should get you sending the data to the correct URL and being able to process it.
just for completion what i did to reach my goal was. I put some comments in front of the code lines. However I'm not certain if they are correct but at the moment they help at least me to understand it a little bit better.
my plugin php file:
//reference to the backend ajax framework
add_action( 'wp_enqueue_scripts', 'ajax_test_enqueue_scripts' );
function ajax_test_enqueue_scripts() {
wp_enqueue_script( 'test', plugins_url( '/test.js', __FILE__ ), array('jquery'), '1.0', true );
wp_localize_script( 'test', 'ajax_object', array( 'ajax_url' => admin_url( 'admin-ajax.php' ) ) );
}
// to reference the ajax call to this function
add_action( 'wp_ajax_nopriv_call_this', 'new_company_variable_transfer' );
function new_company_variable_transfer() {
echo 'Did we get here?';
wp_die();
}
result div
function wpb_new_company(){
echo '<input type="text" class="form-control" id="companyName" placeholder="Firmenname">';
echo '<input type="text" class="form-control" id="companyYear" placeholder="Jahr">';
echo '<button onclick="callAjax()" id="btnNewCompany" type="submit" class="btn btn-primary">Erstellen</button>';
echo '<div id="result">Hier steht das resultat</div>';
}
//to be able to put it on any page with the shortcode [new_company]
add_shortcode('new_company', 'wpb_new_company');
and the simple ajax call in the script file
function callAjax(){
$.ajax({
type: "POST",
url: ajax_object.ajax_url,
data:{action:'call_this'},
success:function(response) {
alert(response);
$("#result").html(response);
}
});
}
And to show you the result visually the pictures of the steps
Unfortunately because of the stack overflow code correction i cannot post pictures here...
At the end you can see it changed the text to the variable we get from the php file