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<?php |
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|
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class Red_Monitor { |
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private $monitor_group_id; |
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|
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function __construct( $options ) { |
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if ( isset( $options['monitor_post'] ) && $options['monitor_post'] > 0 ) { |
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$this->monitor_group_id = intval( $options['monitor_post'], 10 ); |
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|
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// Only monitor if permalinks enabled |
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if ( get_option( 'permalink_structure' ) ) { |
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add_action( 'post_updated', array( $this, 'post_updated' ), 11, 3 ); |
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add_action( 'edit_form_advanced', array( $this, 'insert_old_post' ) ); |
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add_action( 'edit_page_form', array( $this, 'insert_old_post' ) ); |
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add_filter( 'redirection_remove_existing', array( $this, 'remove_existing_redirect' ) ); |
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add_filter( 'redirection_permalink_changed', array( $this, 'has_permalink_changed' ), 10, 3 ); |
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} |
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} |
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} |
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|
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public function remove_existing_redirect( $url ) { |
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Red_Item::disable_where_matches( $url ); |
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} |
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|
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public function insert_old_post() { |
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$url = parse_url( get_permalink(), PHP_URL_PATH ); |
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|
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?> |
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<input type="hidden" name="redirection_slug" value="<?php echo esc_attr( $url ) ?>"/> |
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<?php |
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} |
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|
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public function can_monitor_post( $post, $post_before, $form_data ) { |
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// Check this is the for the expected post |
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if ( ! isset( $form_data['ID'] ) || ! isset( $post->ID ) || $form_data['ID'] !== $post->ID ) { |
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return false; |
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} |
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|
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// Don't do anything if we're not published |
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if ( $post->post_status !== 'publish' || $post_before->post_status !== 'publish' ) { |
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return false; |
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} |
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|
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// Hierarchical post? Do nothing |
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if ( is_post_type_hierarchical( $post->post_type ) ) { |
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return false; |
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} |
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|
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// Old Redirection slug not defined? Do nothing |
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if ( ! isset( $form_data['redirection_slug'] ) ) { |
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return false; |
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} |
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|
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return true; |
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} |
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|
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/** |
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* Called when a post has been updated - check if the slug has changed |
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*/ |
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public function post_updated( $post_id, $post, $post_before ) { |
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if ( $this->can_monitor_post( $post, $post_before, $_POST ) ) { |
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$this->check_for_modified_slug( $post_id, $_POST['redirection_slug'] ); |
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} |
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} |
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|
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/** |
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* Changed if permalinks are different and the before wasn't the site url (we don't want to redirect the site URL) |
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*/ |
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public function has_permalink_changed( $result, $before, $after ) { |
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// Check it's not redirecting from the root |
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if ( $this->get_site_path() === $before || $before === '/' ) { |
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return false; |
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} |
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|
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// Are the URLs the same? |
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if ( $before === $after ) { |
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return false; |
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} |
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|
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return true; |
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} |
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|
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private function get_site_path() { |
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$path = parse_url( get_site_url(), PHP_URL_PATH ); |
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|
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if ( $path ) { |
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return rtrim( $path, '/' ).'/'; |
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} |
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|
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return '/'; |
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} |
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|
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public function check_for_modified_slug( $post_id, $before ) { |
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$after = parse_url( get_permalink( $post_id ), PHP_URL_PATH ); |
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$before = esc_url( $before ); |
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|
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if ( apply_filters( 'redirection_permalink_changed', false, $before, $after ) ) { |
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do_action( 'redirection_remove_existing', $after, $post_id ); |
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|
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// Create a new redirect for this post |
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Red_Item::create( array( |
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'url' => $before, |
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'action_data' => $after, |
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'match_type' => 'url', |
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'action_type' => 'url', |
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'group_id' => $this->monitor_group_id, |
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) ); |
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|
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return true; |
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} |
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|
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return false; |
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} |
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} |
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|
