I want to have AJAX image upload on front-end form and can't figure out where it goes wrong.
HTML form for image upload
<form id="thumbnail_upload" method="post" action="#" enctype="multipart/form-data" >
<input type="file" name="thumbnail" id="thumbnail">
<input type='hidden' value='<?php wp_create_nonce( 'upload_thumb' ); ?>' name='_nonce' />
<input type="hidden" name="action" id="action" value="my_upload_action">
<form>
<div id="output1"></div>
<script>
jQuery(document).ready( function($) {
//http://wordpress.stackexchange.com/questions/72406/set-featured-image-front-frontend-form
var ajaxurl = '<?php echo admin_url('admin-ajax.php'); ?>';
var options = {
target: '#output1', // target element(s) to be updated with server response
beforeSubmit: showRequest, // pre-submit callback
success: showResponse, // post-submit callback
url: ajaxurl // since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
};
$('#thumbnail').change(function(){
// bind form using 'ajaxForm'
$('#thumbnail_upload').ajaxSubmit(options);
});
function showRequest(formData, jqForm, options) {
//do extra stuff before submit like disable the submit button
$('#output1').html('Uploading...');
}
function showResponse(responseText, statusText, xhr, $form) {
//do extra stuff after submit
}
});
</script>
Here is PHP to handle image upload with media_handle_upload
// Enqueue jquery form
function load_jform() {
wp_enqueue_script( 'jquery-form' );
}
add_action( 'wp_enqueue_scripts', 'load_jform' );
//hook the Ajax call
//for logged-in users
add_action('wp_ajax_my_upload_action', 'my_ajax_upload');
function my_ajax_upload(){
//simple Security check
check_ajax_referer('upload_thumb');
//get POST data
$post_id = 0;
//require the needed files
require_once(ABSPATH . "wp-admin" . '/includes/image.php');
require_once(ABSPATH . "wp-admin" . '/includes/file.php');
require_once(ABSPATH . "wp-admin" . '/includes/media.php');
//then loop over the files that were sent and store them using media_handle_upload();
var_dump($_FILES);
if ($_FILES) {
foreach ($_FILES as $file => $array) {
if ($_FILES[$file]['error'] !== UPLOAD_ERR_OK) {
echo "upload error : " . $_FILES[$file]['error'];
die();
}
$attach_id = media_handle_upload( $file, $post_id );
}
}
//and if you want to set that image as Post then use:
update_post_meta($post_id,'_thumbnail_id',$attach_id);
echo "uploaded the new Thumbnail";
die();
}
I actually don't need a foreach
loop to upload multiple images cause it will only we one featured image but can't figure out how to change it properly.
With these code it give me just 0
on #output1
and I'm not sure where or how to debug this.