Archived
143 lines
4.2 KiB
PHP
143 lines
4.2 KiB
PHP
<?php
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/**
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* @package Frontend
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*/
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if ( !defined('WPSEO_VERSION') ) {
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header('HTTP/1.0 403 Forbidden');
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die;
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}
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/**
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* This code handles the category rewrites.
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*/
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class WPSEO_Rewrite {
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/**
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* Class constructor
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*/
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function __construct() {
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add_filter( 'query_vars', array( $this, 'query_vars' ) );
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add_filter( 'category_link', array( $this, 'no_category_base' ) );
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add_filter( 'request', array( $this, 'request' ) );
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add_filter( 'category_rewrite_rules', array( $this, 'category_rewrite_rules' ) );
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add_action( 'created_category', array( $this, 'schedule_flush' ) );
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add_action( 'edited_category', array( $this, 'schedule_flush' ) );
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add_action( 'delete_category', array( $this, 'schedule_flush' ) );
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add_action( 'init', array( $this, 'flush' ), 10 );
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}
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/**
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* Save an option that triggers a flush on the next init.
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*
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* @since 1.2.8
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*/
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function schedule_flush() {
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update_option( 'wpseo_flush_rewrite', 1 );
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}
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/**
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* If the flush option is set, flush the rewrite rules.
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*
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* @since 1.2.8
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*/
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function flush() {
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if ( get_option( 'wpseo_flush_rewrite' ) ) {
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flush_rewrite_rules();
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delete_option( 'wpseo_flush_rewrite' );
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}
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}
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/**
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* Override the category link to remove the category base.
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*
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* @param string $link Unused, overridden by the function.
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* @return string
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*/
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function no_category_base( $link ) {
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$category_base = get_option( 'category_base' );
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if ( '' == $category_base )
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$category_base = 'category';
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// 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)
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if ( '/' == substr( $category_base, 0, 1 ) )
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$category_base = substr( $category_base, 1 );
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$category_base .= '/';
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return preg_replace( '|' . $category_base . '|', '', $link, 1 );
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}
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/**
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* Update the query vars with the redirect var when stripcategorybase is active
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*
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* @param $query_vars
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* @return array
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*/
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function query_vars( $query_vars ) {
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$options = get_wpseo_options();
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if ( isset( $options['stripcategorybase'] ) && $options['stripcategorybase'] )
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$query_vars[] = 'wpseo_category_redirect';
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return $query_vars;
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}
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/**
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* Redirect the "old" category URL to the new one.
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*
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* @param array $query_vars Query vars to check for existence of redirect var
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* @return array
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*/
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function request( $query_vars ) {
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if ( isset( $query_vars['wpseo_category_redirect'] ) ) {
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$catlink = trailingslashit( get_option( 'home' ) ) . user_trailingslashit( $query_vars['wpseo_category_redirect'], 'category' );
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wp_redirect( $catlink, 301 );
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exit;
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}
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return $query_vars;
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}
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/**
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* This function taken and only slightly adapted from WP No Category Base plugin by Saurabh Gupta
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*
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* @return array
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*/
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function category_rewrite_rules() {
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global $wp_rewrite;
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$category_rewrite = array();
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$blog_prefix = '';
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if ( function_exists( 'is_multisite' ) && is_multisite() && !is_subdomain_install() && is_main_site() )
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$blog_prefix = 'blog/';
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foreach ( get_categories( array( 'hide_empty'=> false ) ) as $category ) {
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$category_nicename = $category->slug;
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if ( $category->parent == $category->cat_ID ) // recursive recursion
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$category->parent = 0;
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elseif ( $category->parent != 0 )
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$category_nicename = get_category_parents( $category->parent, false, '/', true ) . $category_nicename;
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$category_rewrite[$blog_prefix . '(' . $category_nicename . ')/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$'] = 'index.php?category_name=$matches[1]&feed=$matches[2]';
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$category_rewrite[$blog_prefix . '(' . $category_nicename . ')/page/?([0-9]{1,})/?$'] = 'index.php?category_name=$matches[1]&paged=$matches[2]';
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$category_rewrite[$blog_prefix . '(' . $category_nicename . ')/?$'] = 'index.php?category_name=$matches[1]';
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}
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// Redirect support from Old Category Base
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$old_base = $wp_rewrite->get_category_permastruct();
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$old_base = str_replace( '%category%', '(.+)', $old_base );
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$old_base = trim( $old_base, '/' );
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$category_rewrite[$old_base . '$'] = 'index.php?wpseo_category_redirect=$matches[1]';
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return $category_rewrite;
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}
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}
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global $wpseo_rewrite;
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$wpseo_rewrite = new WPSEO_Rewrite();
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