Admin ajax php ошибка 0

I am relatively new to jQuery and AJAX in particular. I have a small issue with the return value always being 0, though I think this is actually the success message and it’s not returning anything.

I have scoured the Google-verse and I have the die() function on the PHP callback and I believe the add_actions are correct.

I am working on a local host, though I doubt that affects it and this is all in the admin, not front end. I also checked that the js is enqueued and localised.

I get a 200 OK message in the chrome developer area.

I also tested out the basic AJAX from http://codex.wordpress.org/AJAX_in_Plugins and it also returned 0, which makes me wonder if it is something other than the code outlined below.

Right now I am just trying to make it send something back to the jQuery. Any help would be appreciated.

The jQuery

jQuery(document).ready(function(){
    jQuery('.cl_link_buttons').val('id').click(function() {

            var currentid = jQuery(this).attr('id');

            //alert(currentid);
            console.log(currentid);

            jQuery.ajax ( data = {
                action: 'cleanlinks_ajax_get_post_data',
                url: ajaxurl,
                type: 'POST',
                dataType: 'text',
                "currentid" : currentid

            });

            jQuery.post(ajaxurl, data, function(response) {

                var dataz = response;
                alert( dataz );
                console.log (dataz); //show json in console


            });

            return false;

    }); //end click event
}); //end doc ready

The PHP

add_action("wp_ajax_cleanlinks_ajax_get_post_data", "cleanlinks_ajax_get_post_data");
add_action("wp_ajax_nopriv_cleanlinks_ajax_get_post_data", "cleanlinks_ajax_get_post_data");

function cleanlinks_ajax_get_post_data() {

$from_ajax =  $_POST['currentid'];

echo "do" . $from_ajax . "something";

die();


}

I am relatively new to jQuery and AJAX in particular. I have a small issue with the return value always being 0, though I think this is actually the success message and it’s not returning anything.

I have scoured the Google-verse and I have the die() function on the PHP callback and I believe the add_actions are correct.

I am working on a local host, though I doubt that affects it and this is all in the admin, not front end. I also checked that the js is enqueued and localised.

I get a 200 OK message in the chrome developer area.

I also tested out the basic AJAX from http://codex.wordpress.org/AJAX_in_Plugins and it also returned 0, which makes me wonder if it is something other than the code outlined below.

Right now I am just trying to make it send something back to the jQuery. Any help would be appreciated.

The jQuery

jQuery(document).ready(function(){
    jQuery('.cl_link_buttons').val('id').click(function() {

            var currentid = jQuery(this).attr('id');

            //alert(currentid);
            console.log(currentid);

            jQuery.ajax ( data = {
                action: 'cleanlinks_ajax_get_post_data',
                url: ajaxurl,
                type: 'POST',
                dataType: 'text',
                "currentid" : currentid

            });

            jQuery.post(ajaxurl, data, function(response) {

                var dataz = response;
                alert( dataz );
                console.log (dataz); //show json in console


            });

            return false;

    }); //end click event
}); //end doc ready

The PHP

add_action("wp_ajax_cleanlinks_ajax_get_post_data", "cleanlinks_ajax_get_post_data");
add_action("wp_ajax_nopriv_cleanlinks_ajax_get_post_data", "cleanlinks_ajax_get_post_data");

function cleanlinks_ajax_get_post_data() {

$from_ajax =  $_POST['currentid'];

echo "do" . $from_ajax . "something";

die();


}

Are currently developing a plugin that need ajax. Was thinking of doing it «correctly», so am trying to use admin-ajax.php. However I always get 0 as response, and somehow get the feeling that it never gets to my callback.

Here’s the code, have tried to keep simple.

Load js and setting admin-ajax.php outside admin

wp_enqueue_script('my-more-posts-ajax', SE_WP_MY_PLUGIN_URI . '/js/more-posts-ajax.js?' . rand(), array('jquery'));
wp_localize_script('my-more-posts-ajax', 'MyAjax', array('ajaxurl' => admin_url('admin-ajax.php')));

Actions for callback

add_action('wp_ajax_nopriv_my_more_posts', array($this, 'load_more_posts_callback'));
add_action('wp_ajax_my_more_posts', array($this, 'load_more_posts_callback'));

PHP callback function

public function load_more_posts_callback() {
$response = json_encode(array('success' => TRUE));

header("Content-Type: application/json");
print $response;

exit;
}

js

jQuery(document).ready(function() {
  jQuery('#my-show-more-form').submit(function(event) {
    /* Prevent submitting normally */
    event.preventDefault();

    var data = {
      action: 'my_more_posts',
      offset: 8
    };

    jQuery.post(MyAjax.ajaxurl, data, function(response) {
      alert('Response: ' + response);
    });
  });
});

Anyone got any ideas of what is wrong? Think I got all code for this.

I’m currently working on a WordPress contact form, which is created as a plugin. I need the form after submit to send an email without reloading the page. When it reloads everything is ok. The problem is when submit button is pressed and e.preventDefault() is active the browser shows me 500 (Internal Server Error) with admin-ajax.php = 0

P.S The post is edited

     <?php
        add_action( 'admin_footer', 'html_form_code' ); // Write our JS below here
        //
        function html_form_code() {
        ?>
        <form action="<?php esc_url( $_SERVER['REQUEST_URI'] )?>" method="post" class="contact-form" id="contact-form" >
            <div class=header-contact>
                <p><h2>Contact Form</h2></p>
                <hr>
            </div>
            <div class=input-containers>
                <input type="text" id="name" name="cf-name" pattern="[a-zA-Z0-9 ]+" value="" size="40" placeholder="Име и фамилия"/>
            </div>
            <div class=input-containers>
                <input type="email" id="email" name="cf-email" value="" size="40" placeholder="Поща"/>
            </div>
            <div class=input-containers>
                <input type="text" id="subject" name="cf-subject" pattern="[a-zA-Z ]+" value="" size="40" placeholder="Относно"/>
            </div>
            <div class=input-containers>
                <textarea rows="10" id="message" cols="35" name="cf-message" placeholder="Текст"></textarea>
            </div>
            <div class=input-containers>
                <input type="submit" name="cf-submitted" value="Send" id="submitForm">
            </div>
            <p id="verify" style="display:none;">Your message has been sent.<br /><br /></p> 
        </form>
        <script>
    jQuery('#contact-form').submit(function(e){

         e.preventDefault();
         var name =  jQuery('#name').val();
         var email =  jQuery('#email').val();
         var subject =  jQuery('#subject').val();
         var message =  jQuery('#message').val();
                  jQuery.ajax({
                   url: '<?php echo admin_url('admin-ajax.php'); ?>',
                   type: "POST",
                   data:{ 
                      action: 'send_email', 
                      name: name,
                      email: email,
                      subject: subject,
                      message: message,
                        },
                   success:function(res){
            alert("Email Sent.");
            }
         }); 
        });
    </script>
        <?php
        }
        add_action( 'wp_ajax_send_email', 'deliver_mail' );
        add_action( 'wp_ajax_nopriv_send_email', 'deliver_mail' );

        function deliver_mail() {
            require_once "wp-includes/class-phpmailer.php";
            if (isset($_POST["cf-submitted"])) {

                // sanitize form values
                $name    = sanitize_text_field( $_POST["cf-name"] );
                $email   = sanitize_email( $_POST["cf-email"] );
                $subject = sanitize_text_field( $_POST["cf-subject"] );
                $message = esc_textarea( $_POST["cf-message"] );

                // get the blog administrator's email address

                //$to = "email@gmx.com";
                $headers = "From: $name <$email>" . "\r\n";

                // Localhost
                $mail = new PHPMailer(true);
                $mail->IsSMTP(); // telling the class to use SMTP
                $mail->CharSet = 'UTF-8';

                $mail->SMTPDebug = 0;                     // enables SMTP debug information (for testing)
                $mail->SMTPAuth = true;                  // enable SMTP authentication
                $mail->SMTPSecure = "ssl";                 // sets the prefix to the servier
                $mail->Host = "mail.gmx.com";      // sets GMX as the SMTP server for example: mail.gmx.com
                $mail->Port = 465;                 // set the SMTP port for the GMX server


                $mail->Username = $email;
                $mail->Password = 'pass';

                $mail->SetFrom($email, $name);
                $mail->AddAddress($email);

                $mail->Subject = $subject;
                $mail->MsgHTML($message);

                $headers .= "Content-Type: text/html; charset=utf-8";
                $headers .= "Content-Transfer-Encoding: 8bit";

                try {
                    $mail->send();
                    $msg = "An email has been sent for verfication.";
                    $msgType = "success";

                    wp_safe_redirect( home_url(), 302 );
                    exit();

                } catch (Exception $ex) {
                    $msg = $ex->getMessage();
                    $msgType = "warning"; 

                    wp_safe_redirect( home_url(), 302 );
                    exit();
                }  

        add_action( 'init', function() {
            if ( ! empty( $_POST['form_submitted'] ) ) {
                deliver_mail();        
            }
        });

        function cf_shortcode() {
            ob_start();
            //deliver_mail();
            html_form_code();

            //ob_end_flush(); 
            return ob_get_clean();
        }
        add_shortcode( 'contact_form_second', 'cf_shortcode' );