File Content: class-rewrite.php <?php /** * WPSEO plugin file. * * @package WPSEO\Frontend */ /** * This code handles the category rewrites. */ class WPSEO_Rewrite { /** * Class constructor. */ public function __construct() { add_filter( 'query_vars', [ $this, 'query_vars' ] ); add_filter( 'term_link', [ $this, 'no_category_base' ], 10, 3 ); add_filter( 'request', [ $this, 'request' ] ); add_filter( 'category_rewrite_rules', [ $this, 'category_rewrite_rules' ] ); add_action( 'created_category', [ $this, 'schedule_flush' ] ); add_action( 'edited_category', [ $this, 'schedule_flush' ] ); add_action( 'delete_category', [ $this, 'schedule_flush' ] ); add_action( 'init', [ $this, 'flush' ], 999 ); } /** * Save an option that triggers a flush on the next init. * * @since 1.2.8 */ public function schedule_flush() { update_option( 'wpseo_flush_rewrite', 1 ); } /** * If the flush option is set, flush the rewrite rules. * * @since 1.2.8 * * @return bool */ public function flush() { if ( get_option( 'wpseo_flush_rewrite' ) ) { add_action( 'shutdown', 'flush_rewrite_rules' ); delete_option( 'wpseo_flush_rewrite' ); return true; } return false; } /** * Override the category link to remove the category base. * * @param string $link Term link, overridden by the function for categories. * @param WP_Term $term Unused, term object. * @param string $taxonomy Taxonomy slug. * * @return string */ public function no_category_base( $link, $term, $taxonomy ) { if ( $taxonomy !== 'category' ) { return $link; } $category_base = get_option( 'category_base' ); if ( empty( $category_base ) ) { $category_base = 'category'; } /* * Remove initial slash, if there is one (we remove the trailing slash * in the regex replacement and don't want to end up short a slash). */ if ( substr( $category_base, 0, 1 ) === '/' ) { $category_base = substr( $category_base, 1 ); } $category_base .= '/'; return preg_replace( '`' . preg_quote( $category_base, '`' ) . '`u', '', $link, 1 ); } /** * Update the query vars with the redirect var when stripcategorybase is active. * * @param array $query_vars Main query vars to filter. * * @return array */ public function query_vars( $query_vars ) { if ( WPSEO_Options::get( 'stripcategorybase' ) === true ) { $query_vars[] = 'wpseo_category_redirect'; } return $query_vars; } /** * Checks whether the redirect needs to be created. * * @param array $query_vars Query vars to check for existence of redirect var. * * @return array|void The query vars. */ public function request( $query_vars ) { if ( ! isset( $query_vars['wpseo_category_redirect'] ) ) { return $query_vars; } $this->redirect( $query_vars['wpseo_category_redirect'] ); } /** * This function taken and only slightly adapted from WP No Category Base plugin by Saurabh Gupta. * * @return array */ public function category_rewrite_rules() { global $wp_rewrite; $category_rewrite = []; $taxonomy = get_taxonomy( 'category' ); $permalink_structure = get_option( 'permalink_structure' ); $blog_prefix = ''; if ( is_multisite() && ! is_subdomain_install() && is_main_site() && strpos( $permalink_structure, '/blog/' ) === 0 ) { $blog_prefix = 'blog/'; } $categories = get_categories( [ 'hide_empty' => false ] ); if ( is_array( $categories ) && $categories !== [] ) { foreach ( $categories as $category ) { $category_nicename = $category->slug; if ( $category->parent === $category->cat_ID ) { // Recursive recursion. $category->parent = 0; } elseif ( $taxonomy->rewrite['hierarchical'] !== false && $category->parent !== 0 ) { $parents = get_category_parents( $category->parent, false, '/', true ); if ( ! is_wp_error( $parents ) ) { $category_nicename = $parents . $category_nicename; } unset( $parents ); } $category_rewrite = $this->add_category_rewrites( $category_rewrite, $category_nicename, $blog_prefix, $wp_rewrite->pagination_base ); // Adds rules for the uppercase encoded URIs. $category_nicename_filtered = $this->convert_encoded_to_upper( $category_nicename ); if ( $category_nicename_filtered !== $category_nicename ) { $category_rewrite = $this->add_category_rewrites( $category_rewrite, $category_nicename_filtered, $blog_prefix, $wp_rewrite->pagination_base ); } } unset( $categories, $category, $category_nicename, $category_nicename_filtered ); } // Redirect support from Old Category Base. $old_base = $wp_rewrite->get_category_permastruct(); $old_base = str_replace( '%category%', '(.+)', $old_base ); $old_base = trim( $old_base, '/' ); $category_rewrite[ $old_base . '$' ] = 'index.php?wpseo_category_redirect=$matches[1]'; return $category_rewrite; } /** * Adds required category rewrites rules. * * @param array $rewrites The current set of rules. * @param string $category_name Category nicename. * @param string $blog_prefix Multisite blog prefix. * @param string $pagination_base WP_Query pagination base. * * @return array The added set of rules. */ protected function add_category_rewrites( $rewrites, $category_name, $blog_prefix, $pagination_base ) { $rewrite_name = $blog_prefix . '(' . $category_name . ')'; $rewrites[ $rewrite_name . '/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$' ] = 'index.php?category_name=$matches[1]&feed=$matches[2]'; $rewrites[ $rewrite_name . '/' . $pagination_base . '/?([0-9]{1,})/?$' ] = 'index.php?category_name=$matches[1]&paged=$matches[2]'; $rewrites[ $rewrite_name . '/?$' ] = 'index.php?category_name=$matches[1]'; return $rewrites; } /** * Walks through category nicename and convert encoded parts * into uppercase using $this->encode_to_upper(). * * @param string $name The encoded category URI string. * * @return string The convered URI string. */ protected function convert_encoded_to_upper( $name ) { // Checks if name has any encoding in it. if ( strpos( $name, '%' ) === false ) { return $name; } $names = explode( '/', $name ); $names = array_map( [ $this, 'encode_to_upper' ], $names ); return implode( '/', $names ); } /** * Converts the encoded URI string to uppercase. * * @param string $encoded The encoded string. * * @return string The uppercased string. */ public function encode_to_upper( $encoded ) { if ( strpos( $encoded, '%' ) === false ) { return $encoded; } return strtoupper( $encoded ); } /** * Redirect the "old" category URL to the new one. * * @codeCoverageIgnore * * @param string $category_redirect The category page to redirect to. * @return void */ protected function redirect( $category_redirect ) { $catlink = trailingslashit( get_option( 'home' ) ) . user_trailingslashit( $category_redirect, 'category' ); wp_safe_redirect( $catlink, 301, 'Yoast SEO' ); exit; } } Submit