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<?php namespace Yoast\WP\SEO\Generators; use Yoast\WP\SEO\Context\Meta_Tags_Context; use Yoast\WP\SEO\Helpers\Current_Page_Helper; use Yoast\WP\SEO\Helpers\Options_Helper; use Yoast\WP\SEO\Helpers\Pagination_Helper; use Yoast\WP\SEO\Helpers\Post_Type_Helper; use Yoast\WP\SEO\Helpers\Url_Helper; use Yoast\WP\SEO\Models\Indexable; use Yoast\WP\SEO\Repositories\Indexable_Repository; /** * Represents the generator class for the breadcrumbs. */ class Breadcrumbs_Generator implements Generator_Interface { /** * The indexable repository. * * @var Indexable_Repository */ private $repository; /** * The options helper. * * @var Options_Helper */ private $options; /** * The current page helper. * * @var Current_Page_Helper */ private $current_page_helper; /** * The post type helper. * * @var Post_Type_Helper */ private $post_type_helper; /** * The URL helper. * * @var Url_Helper */ private $url_helper; /** * The pagination helper. * * @var Pagination_Helper */ private $pagination_helper; /** * Breadcrumbs_Generator constructor. * * @param Indexable_Repository $repository The repository. * @param Options_Helper $options The options helper. * @param Current_Page_Helper $current_page_helper The current page helper. * @param Post_Type_Helper $post_type_helper The post type helper. * @param Url_Helper $url_helper The URL helper. * @param Pagination_Helper $pagination_helper The pagination helper. */ public function __construct( Indexable_Repository $repository, Options_Helper $options, Current_Page_Helper $current_page_helper, Post_Type_Helper $post_type_helper, Url_Helper $url_helper, Pagination_Helper $pagination_helper ) { $this->repository = $repository; $this->options = $options; $this->current_page_helper = $current_page_helper; $this->post_type_helper = $post_type_helper; $this->url_helper = $url_helper; $this->pagination_helper = $pagination_helper; } /** * Generates the breadcrumbs. * * @param Meta_Tags_Context $context The meta tags context. * * @return array<array<int,string>> An array of associative arrays that each have a 'text' and a 'url'. */ public function generate( Meta_Tags_Context $context ) { $static_ancestors = []; $breadcrumbs_home = $this->options->get( 'breadcrumbs-home' ); if ( $breadcrumbs_home !== '' && ! \in_array( $this->current_page_helper->get_page_type(), [ 'Home_Page', 'Static_Home_Page' ], true ) ) { $front_page_id = $this->current_page_helper->get_front_page_id(); if ( $front_page_id === 0 ) { $home_page_ancestor = $this->repository->find_for_home_page(); if ( \is_a( $home_page_ancestor, Indexable::class ) ) { $static_ancestors[] = $home_page_ancestor; } } else { $static_ancestor = $this->repository->find_by_id_and_type( $front_page_id, 'post' ); if ( \is_a( $static_ancestor, Indexable::class ) && $static_ancestor->post_status !== 'unindexed' ) { $static_ancestors[] = $static_ancestor; } } } $page_for_posts = \get_option( 'page_for_posts' ); if ( $this->should_have_blog_crumb( $page_for_posts, $context ) ) { $static_ancestor = $this->repository->find_by_id_and_type( $page_for_posts, 'post' ); if ( \is_a( $static_ancestor, Indexable::class ) && $static_ancestor->post_status !== 'unindexed' ) { $static_ancestors[] = $static_ancestor; } } if ( $context->indexable->object_type === 'post' && $context->indexable->object_sub_type !== 'post' && $context->indexable->object_sub_type !== 'page' && $this->post_type_helper->has_archive( $context->indexable->object_sub_type ) ) { $static_ancestor = $this->repository->find_for_post_type_archive( $context->indexable->object_sub_type ); if ( \is_a( $static_ancestor, Indexable::class ) ) { $static_ancestors[] = $static_ancestor; } } if ( $context->indexable->object_type === 'term' ) { $parent = $this->get_taxonomy_post_type_parent( $context->indexable->object_sub_type ); if ( $parent && $parent !== 'post' && $this->post_type_helper->has_archive( $parent ) ) { $static_ancestor = $this->repository->find_for_post_type_archive( $parent ); if ( \is_a( $static_ancestor, Indexable::class ) ) { $static_ancestors[] = $static_ancestor; } } } $indexables = []; if ( ! \in_array( $this->current_page_helper->get_page_type(), [ 'Home_Page', 'Static_Home_Page' ], true ) ) { // Get all ancestors of the indexable and append itself to get all indexables in the full crumb. $indexables = $this->repository->get_ancestors( $context->indexable ); } $indexables[] = $context->indexable; if ( ! empty( $static_ancestors ) ) { \array_unshift( $indexables, ...$static_ancestors ); } $indexables = \apply_filters( 'wpseo_breadcrumb_indexables', $indexables, $context ); $indexables = \is_array( $indexables ) ? $indexables : []; $indexables = \array_filter( $indexables, static function ( $indexable ) { return \is_a( $indexable, Indexable::class ); } ); $crumbs = \array_map( [ $this, 'get_post_type_crumb' ], $indexables ); if ( $breadcrumbs_home !== '' ) { $crumbs[0]['text'] = $breadcrumbs_home; } $crumbs = $this->add_paged_crumb( $crumbs, $context->indexable ); /** * Filter: 'wpseo_breadcrumb_links' - Allow the developer to filter the Yoast SEO breadcrumb links, add to them, change order, etc. * * @param array $crumbs The crumbs array. */ $filtered_crumbs = \apply_filters( 'wpseo_breadcrumb_links', $crumbs ); // Basic check to make sure the filtered crumbs are in an array. if ( ! \is_array( $filtered_crumbs ) ) { \_doing_it_wrong( 'Filter: \'wpseo_breadcrumb_links\'', 'The `wpseo_breadcrumb_links` filter should return a multi-dimensional array.', 'YoastSEO v20.0' ); } else { $crumbs = $filtered_crumbs; } $filter_callback = static function ( $link_info, $index ) use ( $crumbs ) { /** * Filter: 'wpseo_breadcrumb_single_link_info' - Allow developers to filter the Yoast SEO Breadcrumb link information. * * @param array $link_info The breadcrumb link information. * @param int $index The index of the breadcrumb in the list. * @param array $crumbs The complete list of breadcrumbs. */ return \apply_filters( 'wpseo_breadcrumb_single_link_info', $link_info, $index, $crumbs ); }; return \array_map( $filter_callback, $crumbs, \array_keys( $crumbs ) ); } /** * Returns the modified post crumb. * * @param string[] $crumb The crumb. * @param Indexable $ancestor The indexable. * * @return array<int,string> The crumb. */ private function get_post_crumb( $crumb, $ancestor ) { $crumb['id'] = $ancestor->object_id; return $crumb; } /** * Adds the correct ID to the crumb array based on the ancestor provided. * * @param Indexable $ancestor The ancestor indexable. * * @return string[] */ private function get_post_type_crumb( Indexable $ancestor ) { $crumb = [ 'url' => $ancestor->permalink, 'text' => $ancestor->breadcrumb_title, ]; switch ( $ancestor->object_type ) { case 'post': $crumb = $this->get_post_crumb( $crumb, $ancestor ); break; case 'post-type-archive': $crumb = $this->get_post_type_archive_crumb( $crumb, $ancestor ); break; case 'term': $crumb = $this->get_term_crumb( $crumb, $ancestor ); break; case 'system-page': $crumb = $this->get_system_page_crumb( $crumb, $ancestor ); break; case 'user': $crumb = $this->get_user_crumb( $crumb, $ancestor ); break; case 'date-archive': $crumb = $this->get_date_archive_crumb( $crumb ); break; default: // Handle unknown object types (optional). break; } return $crumb; } /** * Returns the modified post type crumb. * * @param string[] $crumb The crumb. * @param Indexable $ancestor The indexable. * * @return string[] The crumb. */ private function get_post_type_archive_crumb( $crumb, $ancestor ) { $crumb['ptarchive'] = $ancestor->object_sub_type; return $crumb; } /** * Returns the modified term crumb. * * @param string[] $crumb The crumb. * @param Indexable $ancestor The indexable. * * @return array<int,string> The crumb. */ private function get_term_crumb( $crumb, $ancestor ) { $crumb['term_id'] = $ancestor->object_id; $crumb['taxonomy'] = $ancestor->object_sub_type; return $crumb; } /** * Returns the modified system page crumb. * * @param string[] $crumb The crumb. * @param Indexable $ancestor The indexable. * * @return string[] The crumb. */ private function get_system_page_crumb( $crumb, $ancestor ) { if ( $ancestor->object_sub_type === 'search-result' ) { $crumb['text'] = $this->options->get( 'breadcrumbs-searchprefix' ) . ' ' . \esc_html( \get_search_query() ); $crumb['url'] = \get_search_link(); } elseif ( $ancestor->object_sub_type === '404' ) { $crumb['text'] = $this->options->get( 'breadcrumbs-404crumb' ); } return $crumb; } /** * Returns the modified user crumb. * * @param string[] $crumb The crumb. * @param Indexable $ancestor The indexable. * * @return string[] The crumb. */ private function get_user_crumb( $crumb, $ancestor ) { $display_name = \get_the_author_meta( 'display_name', $ancestor->object_id ); $crumb['text'] = $this->options->get( 'breadcrumbs-archiveprefix' ) . ' ' . $display_name; return $crumb; } /** * Returns the modified date archive crumb. * * @param string[] $crumb The crumb. * * @return string[] The crumb. */ protected function get_date_archive_crumb( $crumb ) { $home_url = $this->url_helper->home(); $prefix = $this->options->get( 'breadcrumbs-archiveprefix' ); if ( \is_day() ) { $day = \esc_html( \get_the_date() ); $crumb['url'] = $home_url . \get_the_date( 'Y/m/d' ) . '/'; $crumb['text'] = $prefix . ' ' . $day; } elseif ( \is_month() ) { $month = \esc_html( \trim( \single_month_title( ' ', false ) ) ); $crumb['url'] = $home_url . \get_the_date( 'Y/m' ) . '/'; $crumb['text'] = $prefix . ' ' . $month; } elseif ( \is_year() ) { $year = \get_the_date( 'Y' ); $crumb['url'] = $home_url . $year . '/'; $crumb['text'] = $prefix . ' ' . $year; } return $crumb; } /** * Returns whether or not a blog crumb should be added. * * @param int $page_for_posts The page for posts ID. * @param Meta_Tags_Context $context The meta tags context. * * @return bool Whether or not a blog crumb should be added. */ protected function should_have_blog_crumb( $page_for_posts, $context ) { // When there is no page configured as blog page. if ( \get_option( 'show_on_front' ) !== 'page' || ! $page_for_posts ) { return false; } if ( $context->indexable->object_type === 'term' ) { $parent = $this->get_taxonomy_post_type_parent( $context->indexable->object_sub_type ); return $parent === 'post'; } if ( $this->options->get( 'breadcrumbs-display-blog-page' ) !== true ) { return false; } // When the current page is the home page, searchpage or isn't a singular post. if ( \is_home() || \is_search() || ! \is_singular( 'post' ) ) { return false; } return true; } /** * Returns the post type parent of a given taxonomy. * * @param string $taxonomy The taxonomy. * * @return string|false The parent if it exists, false otherwise. */ protected function get_taxonomy_post_type_parent( $taxonomy ) { $parent = $this->options->get( 'taxonomy-' . $taxonomy . '-ptparent' ); if ( empty( $parent ) || (string) $parent === '0' ) { return false; } return $parent; } /** * Adds a crumb for the current page, if we're on an archive page or paginated post. * * @param string[] $crumbs The array of breadcrumbs. * @param Indexable $current_indexable The current indexable. * * @return string[] The breadcrumbs. */ protected function add_paged_crumb( array $crumbs, $current_indexable ) { $is_simple_page = $this->current_page_helper->is_simple_page(); // If we're not on a paged page do nothing. if ( ! $is_simple_page && ! $this->current_page_helper->is_paged() ) { return $crumbs; } // If we're not on a paginated post do nothing. if ( $is_simple_page && $current_indexable->number_of_pages === null ) { return $crumbs; } $current_page_number = $this->pagination_helper->get_current_page_number(); if ( $current_page_number <= 1 ) { return $crumbs; } $crumbs[] = [ 'text' => \sprintf( /* translators: %s expands to the current page number */ \__( 'Page %s', 'wordpress-seo' ), $current_page_number ), ]; return $crumbs; } }
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