Wordpress admin-ajax.php error 400 bad request - php

Question

hello im doing save for later feature in my website
but i get admin-ajax bad request when i click the button
functions.php
function zumra_scripts() {
wp_register_script( 'remove-prodduct-from-list', get_template_directory_uri() . '/js/remove-product.js', array('jquery'), false, true );
wp_localize_script( 'remove-prodduct-from-list', 'sfl_ajax', array( 'ajaxurl' => admin_url( 'admin-ajax.php' )) );
if ( is_page('savelist') ) {
wp_enqueue_script( 'remove-prodduct-from-list' );
}
}
add_action( 'wp_enqueue_scripts', 'zumra_scripts' );
save-for-later.php
<?php
add_action( 'wp_ajax_my_action', 'my_action' );
function my_action() {
$user = $_POST['user'];
$post_id = $_POST['post_id'];
$response = $_POST['saveForLater'];
$response .= ''. __( 'Browse Savelist', 'zumra' ) .'';
add_user_meta( $user, 'product_id', $post_id);
echo $response;
wp_die(); // this is required to terminate immediately and return a proper response
}
add_action( 'wp_ajax_remove_product_from_list', 'remove_product_from_list' );
function remove_product_from_list() {
$user = intval( $_POST['user'] );
$product = intval( $_POST['product'] );
delete_user_meta( $user, 'product_id', $product);
wp_die(); // this is required to terminate immediately and return a proper response
}
add_action( 'wp_ajax_move_to_cart', 'move_to_cart' );
function move_to_cart() {
$user = intval( $_POST['user'] );
$product = intval( $_POST['product'] );
delete_user_meta( $user, 'product_id', $product);
// do_action( 'woocommerce_ajax_added_to_cart', $product );
// wc_add_to_cart_message( $product );
wp_die(); // this is required to terminate immediately and return a proper response
}
save-for-later.js
jQuery(document).ready(function($) {
$('.ajax-form').on('submit',function(e){
e.preventDefault();
var data = {
'action': 'my_action',
'saveForLater': sfl_ajax.response,
'user': sfl_ajax.user,
'post_id': sfl_ajax.post_id,
'product_id': sfl_ajax.user_product,
};
// since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
jQuery.post(sfl_ajax.ajaxurl, data, function(response) {
$('.save-for-later').html(response);
});
});
});
i don't know what im doing wrong
i get error admin-ajax.php 400 every time i click add to save for later button

Answer 1

Try with below code. I am assuming that you have include this file in the functions.php of your active theme.
Or
You can add this code in your functionctions.php directly.
As is described in the Wordpress AJAX documentation, you have two different hooks - wp_ajax_(action), and wp_ajax_nopriv_(action). The difference between these is:
wp_ajax_(action): This is fired if the ajax call is made from inside
the admin panel.
wp_ajax_nopriv_(action): This is fired if the ajax
call is made from the front end of the website.
add_action( 'wp_ajax_my_action', 'my_action' );
add_action("wp_ajax_nopriv_my_action","remove_product_from_list");
function my_action() {
$user = $_POST['user'];
$post_id = $_POST['post_id'];
$response = $_POST['saveForLater'];
$response .= ''. __( 'Browse Savelist', 'zumra' ) .'';
add_user_meta( $user, 'product_id', $post_id);
echo $response;
wp_die(); // this is required to terminate immediately and return a proper response
}
add_action( 'wp_ajax_remove_product_from_list', 'remove_product_from_list' );
add_action("wp_ajax_nopriv_remove_product_from_list","remove_product_from_list");
function remove_product_from_list() {
$user = intval( $_POST['user'] );
$product = intval( $_POST['product'] );
delete_user_meta( $user, 'product_id', $product);
wp_die(); // this is required to terminate immediately and return a proper response
}
add_action( 'wp_ajax_move_to_cart', 'move_to_cart' );
add_action("wp_ajax_nopriv_move_to_cart","GetEditForm");
function move_to_cart() {
$user = intval( $_POST['user'] );
$product = intval( $_POST['product'] );
delete_user_meta( $user, 'product_id', $product);
// do_action( 'woocommerce_ajax_added_to_cart', $product );
// wc_add_to_cart_message( $product );
wp_die(); // this is required to terminate immediately and return a proper response
}