is_main_query() &&
(is_shop() || is_product_category() || is_home())
) {
$show_lokaal = $_SESSION["lokaal_tarief"] ?? false;
$tag_to_show = $show_lokaal ? "lokaal" : "algemeen";
$tax_query = [
[
"taxonomy" => "product_tag",
"field" => "slug",
"terms" => [$tag_to_show],
"operator" => "IN",
],
];
$q->set("tax_query", $tax_query);
}
}
public function redirect_if_missing_tag()
{
// Only run on frontend single product pages
if (is_admin() || !is_singular("product")) {
return;
}
$product_id = get_the_ID();
$product = wc_get_product($product_id);
$show_lokaal = $_SESSION["lokaal_tarief"] ?? false;
$tag_to_show = $show_lokaal ? "lokaal" : "algemeen";
if (!$product || !has_term($tag_to_show, "product_tag", $product_id)) {
wp_redirect(home_url("/shop")); // Works with Dutch permalink
exit();
}
}
public function hide_lokaal_and_overige_regios_tags(
$terms,
$post_id,
$taxonomy,
) {
if ($taxonomy === "product_tag" && !is_admin()) {
$tags_to_hide = ["lokaal", "algemeen"];
return array_filter($terms, function ($term) use ($tags_to_hide) {
return !in_array($term->slug, $tags_to_hide);
});
}
return $terms;
}
public function make_checkout_fields_readonly($fields)
{
$readonly_fields = [
"billing_address_1",
"billing_city",
"billing_postcode",
];
foreach ($readonly_fields as $field) {
if (isset($fields["billing"][$field])) {
$fields["billing"][$field]["custom_attributes"][
"readonly"
] = true;
}
}
return $fields;
}
public function custom_filter_related_products_by_session_tag($query)
{
// Start session if not already started
if (session_status() === PHP_SESSION_NONE) {
session_start();
}
// Determine which tag to exclude based on session
$show_lokaal = $_SESSION["lokaal_tarief"] ?? false;
$exclude_tag = $show_lokaal ? "algemeen" : "lokaal";
global $wpdb;
// Get term_taxonomy_id for the tag to exclude
$excluded_term = $wpdb->get_var(
$wpdb->prepare(
"SELECT term_taxonomy_id FROM {$wpdb->term_taxonomy} tt
JOIN {$wpdb->terms} t ON tt.term_id = t.term_id
WHERE tt.taxonomy = 'product_tag' AND t.slug = %s",
$exclude_tag,
),
);
if ($excluded_term) {
$query[
"join"
] .= " LEFT JOIN {$wpdb->term_relationships} exclude_tr ON exclude_tr.object_id = p.ID ";
$query["where"] .= $wpdb->prepare(
" AND ( exclude_tr.term_taxonomy_id != %d OR exclude_tr.term_taxonomy_id IS NULL )",
$excluded_term,
);
}
return $query;
}
function redirect_checkout_if_lokaaltarief_not_set()
{
// Check if we are on the checkout, product, or cart page
if (is_checkout() || is_product() || is_cart()) {
// Prevent redirect on checkout endpoints (order-received, etc.)
if (is_wc_endpoint_url()) {
return;
}
// Check if the session variable is NOT set
if (!isset($_SESSION["lokaal_tarief"])) {
wc_clear_notices();
wc_add_notice(
__(
"Local rate not available. Redirecting to shop.",
"woocommerce",
),
"notice",
);
wp_safe_redirect(wc_get_page_permalink("shop"));
exit();
}
}
}
public function force_404_for_specific_product_tags()
{
// Check if it's a product tag archive
if (is_tax("product_tag")) {
$tag = get_queried_object();
// List of tag slugs to block
$blocked_tags = ["lokaal", "algemeen"];
// If the current tag is in the blocked list, trigger 404
if (in_array($tag->slug, $blocked_tags)) {
global $wp_query;
$wp_query->set_404();
status_header(404);
}
}
}
}
new PrijsPerPostcode();