I have a client who wants to display home plans (a custom post type) on their website in 2 differently branded sections, depending on which listing page the post is accessed from. I found this solution from @gmazzap from a few years ago, and it looks promising, but I can't make it work: Multiple templates for custom post type
Specifically, it fails to modify the URL on the alternate listing page: it simply uses the slug specified in the CPT registration:
'rewrite' => array( 'slug' => 'plan', 'with_front' => false ),
Which means when I click a plan link on 'page_kioskoverview,php' template it displays the post on the standard 'single-plans.php' template rather than the alternate 'single-kioskplans.php' template.
Here's what my code looks like:
add_action('template_redirect', 'change_plans_plink');
function change_plans_plink() {
if (is_page_template('page_kioskoverview.php')) {
add_filter( 'post_link', 'plans_query_string', 10, 2 );
}
}
function plans_query_string( $url, $post ) {
if ( $post->post_type === 'plans' ) {
$url = add_query_arg( array('style'=>'alt'), $url );
}
return $url;
}
//designate alternative single template for above alt link
add_action('template_include', 'kiosk_plan_single');
function kiosk_plan_single($template) {
if( is_singular('plans') ) {
$alt = filter_input(INPUT_GET, 'style', FILTER_SANITIZE_STRING);
if ( $alt === 'alt' ) $template = 'single-kioskplans.php';
}
return $template;
}
After a few days looking at it (and trying some variations without success), I cannot spot the problem, but I must be missing something.
I have a client who wants to display home plans (a custom post type) on their website in 2 differently branded sections, depending on which listing page the post is accessed from. I found this solution from @gmazzap from a few years ago, and it looks promising, but I can't make it work: Multiple templates for custom post type
Specifically, it fails to modify the URL on the alternate listing page: it simply uses the slug specified in the CPT registration:
'rewrite' => array( 'slug' => 'plan', 'with_front' => false ),
Which means when I click a plan link on 'page_kioskoverview,php' template it displays the post on the standard 'single-plans.php' template rather than the alternate 'single-kioskplans.php' template.
Here's what my code looks like:
add_action('template_redirect', 'change_plans_plink');
function change_plans_plink() {
if (is_page_template('page_kioskoverview.php')) {
add_filter( 'post_link', 'plans_query_string', 10, 2 );
}
}
function plans_query_string( $url, $post ) {
if ( $post->post_type === 'plans' ) {
$url = add_query_arg( array('style'=>'alt'), $url );
}
return $url;
}
//designate alternative single template for above alt link
add_action('template_include', 'kiosk_plan_single');
function kiosk_plan_single($template) {
if( is_singular('plans') ) {
$alt = filter_input(INPUT_GET, 'style', FILTER_SANITIZE_STRING);
if ( $alt === 'alt' ) $template = 'single-kioskplans.php';
}
return $template;
}
After a few days looking at it (and trying some variations without success), I cannot spot the problem, but I must be missing something.
Share Improve this question edited Dec 11, 2017 at 19:12 Ray Gulick asked Dec 11, 2017 at 18:33 Ray GulickRay Gulick 5366 silver badges20 bronze badges 03 Answers
Reset to default 2To display different templates for the same post type I would make 2 different links, check on which link I'm currently on and decide which template to load.
Working example:
/**
* Register event post type
*
* Registering event post type will add such a permalink structure event/([^/]+)/?$
*/
function wpse_288345_register_event_post_type() {
$labels = array(
'name' => __( 'Events' ),
'singular_name' => __( 'Event' ),
'add_new' => __( 'Add new' ),
'add_new_item' => __( 'Add new' ),
'edit_item' => __( 'Edit' ),
'new_item' => __( 'New' ),
'view_item' => __( 'View' ),
'search_items' => __( 'Search' ),
'not_found' => __( 'Not found' ),
'not_found_in_trash' => __( 'Not found Events in trash' ),
'parent_item_colon' => __( 'Parent' ),
'menu_name' => __( 'Events' ),
);
$args = array(
'labels' => $labels,
'hierarchical' => false,
'supports' => array( 'title', 'page-attributes' ),
'taxonomies' => array(),
'public' => true,
'show_ui' => true,
'show_in_menu' => true,
'show_in_nav_menus' => false,
'publicly_queryable' => true,
'exclude_from_search' => false,
'has_archive' => true,
'query_var' => true,
'can_export' => true,
'rewrite' => array('slug' => 'event'),
'capability_type' => 'post',
);
register_post_type( 'event', $args );
}
add_action( 'init', 'wpse_288345_register_event_post_type' );
/**
* Add custom rewrite rule for event post type.
*
* Remember to flush rewrite rules to apply changes.
*/
function wpse_288345_add_event_rewrite_rules() {
/**
* Custom rewrite rules for one post type.
*
* We wil know on which url we are by $_GET parameters 'performers' and 'summary'. Which we will add to
* public query vars to obtain them in convinient way.
*/
add_rewrite_rule('event/performers/([^/]+)/?$', 'index.php?post_type=event&name=$matches[1]&performers=1', 'top');
add_rewrite_rule('event/summary/([^/]+)/?$', 'index.php?post_type=event&name=$matches[1]&summary=1', 'top');
}
add_action('init', 'wpse_288345_add_event_rewrite_rules');
/**
* Add 'performers' and 'summary' custom event query vars.
*/
function wpse_288345_register_event_query_vars( $vars ) {
$vars[] = 'performers';
$vars[] = 'summary';
return $vars;
}
add_filter( 'query_vars', 'wpse_288345_register_event_query_vars' );
/**
* Decide which template to load
*/
function wpse_288345_load_performers_or_summary_template( $template ) {
// Get public query vars
$performers = (int) get_query_var( 'performers', 0 );
$summary = (int) get_query_var( 'summary', 0 );
// If performer = 1 then we are on event/performers link
if( $performers === 1 ) {
$template = locate_template( array( 'single-event-performers.php' ) );
}
// If summary = 1 then we are on event/summary link
if( $summary === 1 ) {
$template = locate_template( array( 'single-event-summary.php' ) );
}
if($template == '') {
throw new \Exception('No template found');
}
return $template;
}
add_filter( 'template_include', 'wpse_288345_load_performers_or_summary_template' );
Here's the alternative approach that I made work, using a GET parameter and conditional statements.
On the alternate listing page, I added '?template=kiosk' to the permalinks.
On the singles template (single-plans.php) I added the following to the top of the template (and of course 'endif' at bottom of template):
$kiosk = $_GET['template']; if(isset($kiosk)) :
Then, throughout the template, I created conditional statements based on whether or not there was a parameter, to display content appropriately:
if(isset($kiosk)) { show kiosk version } else { show standard version }
I was trying almost the exactly the same code too, and it wasn't working. There's just one change to make for this to operate completely. Just add locate_template to one line.
Change
if ( $alt === 'alt' ) $template = 'single-kioskplans.php';
to
if ( $alt === 'alt' ) $template = locate_template('single-kioskplans.php');
The full code will look like this:
add_action('template_redirect', 'change_plans_plink');
function change_plans_plink() {
if (is_page_template('page_kioskoverview.php')) {
add_filter( 'post_link', 'plans_query_string', 10, 2 );
}
}
function plans_query_string( $url, $post ) {
if ( $post->post_type === 'plans' ) {
$url = add_query_arg( array('style'=>'alt'), $url );
}
return $url;
}
//designate alternative single template for above alt link
add_action('template_include', 'kiosk_plan_single');
function kiosk_plan_single($template) {
if( is_singular('plans') ) {
$alt = filter_input(INPUT_GET, 'style', FILTER_SANITIZE_STRING);
if ( $alt === 'alt' ) $template = locate_template('single-kioskplans.php');
}
return $template;
}