add_rewrite_rule() allows you to turn the pretty url into variables.
- numbers:
(\d*) - section:
/rid/or/pageid/ - slug:
([a-zA-Z0-9-]+
Here is a class to register the rewrite and handle the request if a match has been found.
<?php
if ( ! class_exists( 'CPTURLRewrite' ) ):
class CPTURLRewrite {
const ENDPOINT_QUERY_NAME = 'pageid';
const ENDPOINT_QUERY_PARAM = '__pageid';
// WordPress hooks
public function init() {
add_filter( 'query_vars', array ( $this, 'add_query_vars' ), 0 );
add_action( 'parse_request', array ( $this, 'sniff_requests' ), 0 );
add_action( 'init', array ( $this, 'add_endpoint' ), 0 );
}
// Add public query vars
public function add_query_vars( $vars ) {
// add all the things we know we'll use
$vars[] = static::ENDPOINT_QUERY_PARAM;
$vars[] = 'pageid';
$vars[] = 'rid';
$vars[] = 'title';
return $vars;
}
// Add API Endpoint
public function add_endpoint() {
// numbers: (\d*)
// section: /rid/
// slug: ([a-zA-Z0-9-]+
add_rewrite_rule( '^' . static::ENDPOINT_QUERY_NAME . '/(\d*)/rid/(\d*)/title/([a-zA-Z0-9-]+)?', 'index.php?' . static::ENDPOINT_QUERY_PARAM . '=1&pageid=$matches[1]&rid=$matches[2]&title=$matches[3]', 'top' );
//////////////////////////////////
flush_rewrite_rules( false ); //// <---------- REMOVE THIS WHEN DONE
//////////////////////////////////
}
// Sniff Requests
public function sniff_requests( $wp_query ) {
global $wp;
if ( isset(
$wp->query_vars[ static::ENDPOINT_QUERY_PARAM ],
$wp->query_vars[ 'pageid' ],
$wp->query_vars[ 'rid' ],
$wp->query_vars[ 'title' ] ) ) {
$this->handle_request(); // handle it
}
}
// Handle Requests
protected function handle_request() {
global $wp;
// (optional) act on the query vars
$pageid = $wp->query_vars[ 'pageid' ];
$rid = $wp->query_vars[ 'rid' ];
$title = $wp->query_vars[ 'title' ];
// (optional) select your custom template
add_filter( 'template_include', function( $original_template ) {
return __DIR__ . '/custom.php';
} );
}
}
$wpCPTURLRewrite = new CPTURLRewrite();
$wpCPTURLRewrite->init();
endif; // CPTURLRewrite
UPDATE
I found a simpler way to handle this.
http://example.com/pageid/333/rid/444/title/your-title-here/
This new way utilizes add_rewrite_tag with _ to run the query for a page’s ID without messing up the main query. In the example above, 333 would just modify the query to look for that post ID in pre_get_posts. You could just as easily modify template_redirect or template_include.
/**
* Register a rewrite endpoint for the API.
*/
function prefix__init() {
// add tags with `_` prefix to avoid screwing up query
add_rewrite_tag( '%_pageid%', '(\d*)' );
add_rewrite_tag( '%_rid%', '(\d*)' );
add_rewrite_tag( '%_title%', '([a-zA-Z\d\-_+]+)' );
// create URL rewrite
add_rewrite_rule( '^pageid/(\d*)/rid/(\d*)/title/([a-zA-Z\d\-_+]+)?', 'index.php?_pageid=$matches[1]&_rid=$matches[2]&_title=$matches[3]', 'top' );
// required once after rules added/changed
// flush_rewrite_rules( true );
}
add_action( 'init', 'prefix__init' );
/**
* Handle data (maybe) passed to the API endpoint.
*
* @param $query
*/
function prefix__pre_get_posts( $query ) {
if ( isset( $query->query_vars[ '_pageid' ], $query->query_vars[ '_rid' ], $query->query_vars[ '_title' ] ) ) {
// set the query to search for a page using `_pageid`
$query->set( 'p', $query->query_vars[ '_pageid' ] );
}
}
add_action( 'pre_get_posts', 'prefix__pre_get_posts' );
To reference all the params passed later:
/**
* Debug the query params at any point
*/
function prefix__show_query_args() {
global $wp_query;
echo "<pre>";
print_r( array (
'pageid' => $wp_query->query_vars[ '_pageid' ],
'rid' => $wp_query->query_vars[ '_rid' ],
'title' => $wp_query->query_vars[ '_title' ],
'file' => __FILE__,
'line' => __LINE__,
) );
echo "</pre>";
}