wordpress - check if slug exists with AJAX-CodePudding

I would like to check from the user interface if a slug url already exists.

I naturally turned to an AJAX solution like 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);
        }});
    });`

And on the called script side is_valid_slug.php, it looks like this

`<?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`

Everything works fine. However, I am not a wordpress pro and I would like to know if this way of doing things is dangerous and if another approach would be better?

CodePudding user response：

if you are coding in custom plugin or theme (any files in wp-content) No need to require wp-load.php . if you want better way for create ajax in WP fallow this AJAX wordpress document

NOTE : you can write callback in functions.php in your theme directory or child theme .

NOTE 2 : Also you can use this wp function Instead SQL query.

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