remove-product-category-slug.php

<?php if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

/*!
  Plugin Name: Remove /product/, /shop/ and /product-category/ from URL
  Plugin
  Description: A fent nevezett részek eltávolítása az URL-bol
  Version: 1.0
  Author:
  Author URI:
  License: GPL2
*/

/*
* Remove /product/ or /shop/ ... support %product_cat%
*/
function wccustom_remove_slug( $post_link, $post ) {
    if ( !in_array( get_post_type($post), array( 'product' ) ) || 'publish' != $post->post_status ) {
        return $post_link;
    }
    if('product' == $post->post_type){
        $post_link = str_replace( '/termek/', '/', $post_link ); //replace "product" to your slug
    }else{
        $post_link = str_replace( '/' . $post->post_type . '/', '/', $post_link );
    }
    return $post_link;
}
add_filter( 'post_type_link', 'wccustom_remove_slug', 10, 2 );

function wccustom_woo_product_rewrite_rules($flash = false) {
    global $wp_post_types, $wpdb;
    $siteLink = esc_url(home_url('/'));
    foreach ($wp_post_types as $type=>$custom_post) {
        if($type == 'product'){
            if ($custom_post->_builtin == false) {
                $querystr = "SELECT {$wpdb->posts}.post_name, {$wpdb->posts}.ID
                            FROM {$wpdb->posts}
                            WHERE {$wpdb->posts}.post_status = 'publish'
                            AND {$wpdb->posts}.post_type = '{$type}'";
                $posts = $wpdb->get_results($querystr, OBJECT);
                foreach ($posts as $post) {
                    $current_slug = get_permalink($post->ID);
                    $base_product = str_replace($siteLink,'',$current_slug);
                    add_rewrite_rule($base_product.'?$', "index.php?{$custom_post->query_var}={$post->post_name}", 'top');
                }
            }
        }
    }
    if ($flash == true)
        flush_rewrite_rules(false);
}
add_action( 'init', 'wccustom_woo_product_rewrite_rules' );

/*Fix 404*/
function wccustom_woo_new_product_post_save($post_id){
    global $wp_post_types;
    $post_type = get_post_type($post_id);
    foreach ($wp_post_types as $type=>$custom_post) {
        if ($custom_post->_builtin == false && $type == $post_type) {
            wccustom_woo_product_rewrite_rules(true);
        }
    }
}
add_action( 'wp_insert_post', 'wccustom_woo_new_product_post_save' );

/*
* Remove product-category
*/
add_filter( 'term_link', 'wccustom_product_cat_permalink', 10, 3 );
function wccustom_product_cat_permalink( $url, $term, $taxonomy ){
    switch ($taxonomy):
        case 'product_cat':
            $taxonomy_slug = 'termek_kategoria'; // Change product-category to your product category slug
            if(strpos($url, $taxonomy_slug) === FALSE) break;
            $url = str_replace('/' . $taxonomy_slug, '', $url);
            break;
    endswitch;
    return $url;
}

// Add our custom product cat rewrite rules
function wccustom_product_category_rewrite_rules($flash = false) {
    $terms = get_terms( array(
        'taxonomy' => 'product_cat',
        'post_type' => 'product',
        'hide_empty' => false,
    ));
    if($terms && !is_wp_error($terms)){
        $siteurl = esc_url(home_url('/'));
        foreach ($terms as $term){
            $term_slug = $term->slug;
            $baseterm = str_replace($siteurl,'',get_term_link($term->term_id,'product_cat'));
            add_rewrite_rule($baseterm.'?$','index.php?product_cat='.$term_slug,'top');
            add_rewrite_rule($baseterm.'page/([0-9]{1,})/?$', 'index.php?product_cat='.$term_slug.'&paged=$matches[1]','top');
            add_rewrite_rule($baseterm.'(?:feed/)?(feed|rdf|rss|rss2|atom)/?$', 'index.php?product_cat='.$term_slug.'&feed=$matches[1]','top');
        }
    }
    if ($flash == true)
        flush_rewrite_rules(false);
}
add_action('init', 'wccustom_product_category_rewrite_rules');

/*Fix 404 when creat new term*/
add_action( 'create_term', 'wccustom_new_product_cat_edit_success', 10, 2 );
function wccustom_new_product_cat_edit_success( $term_id, $taxonomy ) {
    wccustom_product_category_rewrite_rules(true);
}
?>