Verifying WordPress slug existence using AJAX

I want to verify if a slug URL already exists using the user interface. My initial idea was to use an AJAX solution similar to this.

`jQuery("#slugBrut").keyup(function() {
        var slugBrutText = jQuery("#slugBrut").val() ; 

        jQuery.ajax({
            type:"POST",
            url: "theme/is_valid_slug.php", 
            data:{
                slug : slugBrutText
            },
            success: function(result){
            console.log(result);
        }});
    });`

In the script is_valid_slug.php that is being called, it is structured as follows:

`<?php
require($_SERVER['DOCUMENT_ROOT'].'/wp-load.php');
global $wpdb;
$slug = $_POST['slug'] ;
$post_if = $wpdb->get_var("SELECT count(post_title) FROM $wpdb->posts WHERE post_name like '$slug'");
echo $post_if ; // returns 0 or 1`

While everything seems to be functioning correctly, since I am not well-versed in WordPress development, I am curious to know whether this method poses any security risks and if there could be a more optimal approach?

ajaxwordpressurlslug

Answer №1

When coding in a custom plugin or theme (any files in wp-content), there is no need to require wp-load.php. For a better way to create ajax in WordPress, follow this AJAX wordpress document

Note: You can write callbacks in functions.php in your theme directory or child theme.

Note 2: You can also use the WordPress function instead of SQL queries.

$exists = get_page_by_path( $slug, OBJECT, $post_type );
 return (int) $exists; // 1 or 0

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