$helpers The helpers surface.
* @param WPSEO_Replace_Vars $replace_vars The replace vars helper.
*/
public function __construct(
Meta_Tags_Context_Memoizer $context_memoizer,
ContainerInterface $service_container,
Options_Helper $options,
Request_Helper $request,
Helpers_Surface $helpers,
WPSEO_Replace_Vars $replace_vars
) {
$this->container = $service_container;
$this->context_memoizer = $context_memoizer;
$this->options = $options;
$this->request = $request;
$this->helpers = $helpers;
$this->replace_vars = $replace_vars;
}
/**
* Registers the appropriate hooks to show the SEO metadata on the frontend.
*
* Removes some actions to remove metadata that WordPress shows on the frontend,
* to avoid duplicate and/or mismatched metadata.
*/
public function register_hooks() {
\add_action( 'wp_head', [ $this, 'call_wpseo_head' ], 1 );
// Filter the title for compatibility with other plugins and themes.
\add_filter( 'wp_title', [ $this, 'filter_title' ], 15 );
// Filter the title for compatibility with block-based themes.
\add_filter( 'pre_get_document_title', [ $this, 'filter_title' ], 15 );
// Removes our robots presenter from the list when wp_robots is handling this.
\add_filter( 'wpseo_frontend_presenter_classes', [ $this, 'filter_robots_presenter' ] );
\add_action( 'wpseo_head', [ $this, 'present_head' ], -9999 );
\remove_action( 'wp_head', 'rel_canonical' );
\remove_action( 'wp_head', 'index_rel_link' );
\remove_action( 'wp_head', 'start_post_rel_link' );
\remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' );
\remove_action( 'wp_head', 'noindex', 1 );
\remove_action( 'wp_head', '_wp_render_title_tag', 1 );
\remove_action( 'wp_head', '_block_template_render_title_tag', 1 );
\remove_action( 'wp_head', 'gutenberg_render_title_tag', 1 );
}
/**
* Filters the title, mainly used for compatibility reasons.
*
* @return string
*/
public function filter_title() {
$context = $this->context_memoizer->for_current_page();
$title_presenter = new Title_Presenter();
/** This filter is documented in src/integrations/front-end-integration.php */
$title_presenter->presentation = \apply_filters( 'wpseo_frontend_presentation', $context->presentation, $context );
$title_presenter->replace_vars = $this->replace_vars;
$title_presenter->helpers = $this->helpers;
\remove_filter( 'pre_get_document_title', [ $this, 'filter_title' ], 15 );
$title = \esc_html( $title_presenter->get() );
\add_filter( 'pre_get_document_title', [ $this, 'filter_title' ], 15 );
return $title;
}
/**
* Filters our robots presenter, but only when wp_robots is attached to the wp_head action.
*
* @param array $presenters The presenters for current page.
*
* @return array The filtered presenters.
*/
public function filter_robots_presenter( $presenters ) {
if ( ! \function_exists( 'wp_robots' ) ) {
return $presenters;
}
if ( ! \has_action( 'wp_head', 'wp_robots' ) ) {
return $presenters;
}
if ( $this->request->is_rest_request() ) {
return $presenters;
}
return \array_diff( $presenters, [ 'Yoast\\WP\\SEO\\Presenters\\Robots_Presenter' ] );
}
/**
* Presents the head in the front-end. Resets wp_query if it's not the main query.
*
* @codeCoverageIgnore It just calls a WordPress function.
*/
public function call_wpseo_head() {
global $wp_query;
$old_wp_query = $wp_query;
// phpcs:ignore WordPress.WP.DiscouragedFunctions.wp_reset_query_wp_reset_query -- Reason: The recommended function, wp_reset_postdata, doesn't reset wp_query.
\wp_reset_query();
\do_action( 'wpseo_head' );
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- Reason: we have to restore the query.
$GLOBALS['wp_query'] = $old_wp_query;
}
/**
* Echoes all applicable presenters for a page.
*/
public function present_head() {
$context = $this->context_memoizer->for_current_page();
$presenters = $this->get_presenters( $context->page_type, $context );
/**
* Filter 'wpseo_frontend_presentation' - Allow filtering the presentation used to output our meta values.
*
* @api Indexable_Presention The indexable presentation.
*/
$presentation = \apply_filters( 'wpseo_frontend_presentation', $context->presentation, $context );
echo \PHP_EOL;
foreach ( $presenters as $presenter ) {
$presenter->presentation = $presentation;
$presenter->helpers = $this->helpers;
$presenter->replace_vars = $this->replace_vars;
$output = $presenter->present();
if ( ! empty( $output ) ) {
// phpcs:ignore WordPress.Security.EscapeOutput -- Presenters are responsible for correctly escaping their output.
echo "\t" . $output . \PHP_EOL;
}
}
echo \PHP_EOL . \PHP_EOL;
}
/**
* Returns all presenters for this page.
*
* @param string $page_type The page type.
* @param Meta_Tags_Context|null $context The meta tags context for the current page.
*
* @return Abstract_Indexable_Presenter[] The presenters.
*/
public function get_presenters( $page_type, $context = null ) {
if ( \is_null( $context ) ) {
$context = $this->context_memoizer->for_current_page();
}
$needed_presenters = $this->get_needed_presenters( $page_type );
$callback = static function( $presenter ) {
if ( ! \class_exists( $presenter ) ) {
return null;
}
return new $presenter();
};
$presenters = \array_filter( \array_map( $callback, $needed_presenters ) );
/**
* Filter 'wpseo_frontend_presenters' - Allow filtering the presenter instances in or out of the request.
*
* @param array $presenters The presenters.
* @param Meta_Tags_Context $context The meta tags context for the current page.
*
* @api Abstract_Indexable_Presenter[] List of presenter instances.
*/
$presenter_instances = \apply_filters( 'wpseo_frontend_presenters', $presenters, $context );
if ( ! \is_array( $presenter_instances ) ) {
$presenter_instances = $presenters;
}
$is_presenter_callback = static function ( $presenter_instance ) {
return $presenter_instance instanceof Abstract_Indexable_Presenter;
};
$presenter_instances = \array_filter( $presenter_instances, $is_presenter_callback );
return \array_merge(
[ new Marker_Open_Presenter() ],
$presenter_instances,
[ new Marker_Close_Presenter() ]
);
}
/**
* Generate the array of presenters we need for the current request.
*
* @param string $page_type The page type we're retrieving presenters for.
*
* @return string[] The presenters.
*/
private function get_needed_presenters( $page_type ) {
$presenters = $this->get_presenters_for_page_type( $page_type );
$presenters = $this->maybe_remove_title_presenter( $presenters );
$callback = static function ( $presenter ) {
return "Yoast\WP\SEO\Presenters\\{$presenter}_Presenter";
};
$presenters = \array_map( $callback, $presenters );
/**
* Filter 'wpseo_frontend_presenter_classes' - Allow filtering presenters in or out of the request.
*
* @param array $presenters List of presenters.
* @param string $page_type The current page type.
*/
$presenters = \apply_filters( 'wpseo_frontend_presenter_classes', $presenters, $page_type );
return $presenters;
}
/**
* Filters the presenters based on the page type.
*
* @param string $page_type The page type.
*
* @return string[] The presenters.
*/
private function get_presenters_for_page_type( $page_type ) {
if ( $page_type === 'Error_Page' ) {
$presenters = $this->base_presenters;
if ( $this->options->get( 'opengraph' ) === true ) {
$presenters = \array_merge( $presenters, $this->open_graph_error_presenters );
}
return \array_merge( $presenters, $this->closing_presenters );
}
$presenters = $this->get_all_presenters();
if ( \in_array( $page_type, [ 'Static_Home_Page', 'Home_Page' ], true ) ) {
$presenters = \array_merge( $presenters, $this->webmaster_verification_presenters );
}
// Filter out the presenters only needed for singular pages on non-singular pages.
if ( ! \in_array( $page_type, [ 'Post_Type', 'Static_Home_Page' ], true ) ) {
$presenters = \array_diff( $presenters, $this->singular_presenters );
}
// Filter out `twitter:data` presenters for static home pages.
if ( $page_type === 'Static_Home_Page' ) {
$presenters = \array_diff( $presenters, $this->slack_presenters );
}
return $presenters;
}
/**
* Returns a list of all available presenters based on settings.
*
* @return string[] The presenters.
*/
private function get_all_presenters() {
$presenters = \array_merge( $this->base_presenters, $this->indexing_directive_presenters );
if ( $this->options->get( 'opengraph' ) === true ) {
$presenters = \array_merge( $presenters, $this->open_graph_presenters );
}
if ( $this->options->get( 'twitter' ) === true && \apply_filters( 'wpseo_output_twitter_card', true ) !== false ) {
$presenters = \array_merge( $presenters, $this->twitter_card_presenters );
}
if ( $this->options->get( 'enable_enhanced_slack_sharing' ) === true && \apply_filters( 'wpseo_output_enhanced_slack_data', true ) !== false ) {
$presenters = \array_merge( $presenters, $this->slack_presenters );
}
return \array_merge( $presenters, $this->closing_presenters );
}
/**
* Whether the title presenter should be removed.
*
* @return bool True when the title presenter should be removed, false otherwise.
*/
public function should_title_presenter_be_removed() {
return ! \get_theme_support( 'title-tag' ) && ! $this->options->get( 'forcerewritetitle', false );
}
/**
* Checks if the Title presenter needs to be removed.
*
* @param string[] $presenters The presenters.
*
* @return string[] The presenters.
*/
private function maybe_remove_title_presenter( $presenters ) {
// Do not remove the title if we're on a REST request.
if ( $this->request->is_rest_request() ) {
return $presenters;
}
// Remove the title presenter if the theme is hardcoded to output a title tag so we don't have two title tags.
if ( $this->should_title_presenter_be_removed() ) {
$presenters = \array_diff( $presenters, [ 'Title' ] );
}
return $presenters;
}
}
$helpers The helpers surface.
* @param WPSEO_Replace_Vars $replace_vars The replace vars helper.
*/
public function __construct(
Meta_Tags_Context_Memoizer $context_memoizer,
ContainerInterface $service_container,
Options_Helper $options,
Request_Helper $request,
Helpers_Surface $helpers,
WPSEO_Replace_Vars $replace_vars
) {
$this->container = $service_container;
$this->context_memoizer = $context_memoizer;
$this->options = $options;
$this->request = $request;
$this->helpers = $helpers;
$this->replace_vars = $replace_vars;
}
/**
* Registers the appropriate hooks to show the SEO metadata on the frontend.
*
* Removes some actions to remove metadata that WordPress shows on the frontend,
* to avoid duplicate and/or mismatched metadata.
*/
public function register_hooks() {
\add_action( 'wp_head', [ $this, 'call_wpseo_head' ], 1 );
// Filter the title for compatibility with other plugins and themes.
\add_filter( 'wp_title', [ $this, 'filter_title' ], 15 );
// Filter the title for compatibility with block-based themes.
\add_filter( 'pre_get_document_title', [ $this, 'filter_title' ], 15 );
// Removes our robots presenter from the list when wp_robots is handling this.
\add_filter( 'wpseo_frontend_presenter_classes', [ $this, 'filter_robots_presenter' ] );
\add_action( 'wpseo_head', [ $this, 'present_head' ], -9999 );
\remove_action( 'wp_head', 'rel_canonical' );
\remove_action( 'wp_head', 'index_rel_link' );
\remove_action( 'wp_head', 'start_post_rel_link' );
\remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' );
\remove_action( 'wp_head', 'noindex', 1 );
\remove_action( 'wp_head', '_wp_render_title_tag', 1 );
\remove_action( 'wp_head', '_block_template_render_title_tag', 1 );
\remove_action( 'wp_head', 'gutenberg_render_title_tag', 1 );
}
/**
* Filters the title, mainly used for compatibility reasons.
*
* @return string
*/
public function filter_title() {
$context = $this->context_memoizer->for_current_page();
$title_presenter = new Title_Presenter();
/** This filter is documented in src/integrations/front-end-integration.php */
$title_presenter->presentation = \apply_filters( 'wpseo_frontend_presentation', $context->presentation, $context );
$title_presenter->replace_vars = $this->replace_vars;
$title_presenter->helpers = $this->helpers;
\remove_filter( 'pre_get_document_title', [ $this, 'filter_title' ], 15 );
$title = \esc_html( $title_presenter->get() );
\add_filter( 'pre_get_document_title', [ $this, 'filter_title' ], 15 );
return $title;
}
/**
* Filters our robots presenter, but only when wp_robots is attached to the wp_head action.
*
* @param array $presenters The presenters for current page.
*
* @return array The filtered presenters.
*/
public function filter_robots_presenter( $presenters ) {
if ( ! \function_exists( 'wp_robots' ) ) {
return $presenters;
}
if ( ! \has_action( 'wp_head', 'wp_robots' ) ) {
return $presenters;
}
if ( $this->request->is_rest_request() ) {
return $presenters;
}
return \array_diff( $presenters, [ 'Yoast\\WP\\SEO\\Presenters\\Robots_Presenter' ] );
}
/**
* Presents the head in the front-end. Resets wp_query if it's not the main query.
*
* @codeCoverageIgnore It just calls a WordPress function.
*/
public function call_wpseo_head() {
global $wp_query;
$old_wp_query = $wp_query;
// phpcs:ignore WordPress.WP.DiscouragedFunctions.wp_reset_query_wp_reset_query -- Reason: The recommended function, wp_reset_postdata, doesn't reset wp_query.
\wp_reset_query();
\do_action( 'wpseo_head' );
// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited -- Reason: we have to restore the query.
$GLOBALS['wp_query'] = $old_wp_query;
}
/**
* Echoes all applicable presenters for a page.
*/
public function present_head() {
$context = $this->context_memoizer->for_current_page();
$presenters = $this->get_presenters( $context->page_type, $context );
/**
* Filter 'wpseo_frontend_presentation' - Allow filtering the presentation used to output our meta values.
*
* @api Indexable_Presention The indexable presentation.
*/
$presentation = \apply_filters( 'wpseo_frontend_presentation', $context->presentation, $context );
echo \PHP_EOL;
foreach ( $presenters as $presenter ) {
$presenter->presentation = $presentation;
$presenter->helpers = $this->helpers;
$presenter->replace_vars = $this->replace_vars;
$output = $presenter->present();
if ( ! empty( $output ) ) {
// phpcs:ignore WordPress.Security.EscapeOutput -- Presenters are responsible for correctly escaping their output.
echo "\t" . $output . \PHP_EOL;
}
}
echo \PHP_EOL . \PHP_EOL;
}
/**
* Returns all presenters for this page.
*
* @param string $page_type The page type.
* @param Meta_Tags_Context|null $context The meta tags context for the current page.
*
* @return Abstract_Indexable_Presenter[] The presenters.
*/
public function get_presenters( $page_type, $context = null ) {
if ( \is_null( $context ) ) {
$context = $this->context_memoizer->for_current_page();
}
$needed_presenters = $this->get_needed_presenters( $page_type );
$callback = static function( $presenter ) {
if ( ! \class_exists( $presenter ) ) {
return null;
}
return new $presenter();
};
$presenters = \array_filter( \array_map( $callback, $needed_presenters ) );
/**
* Filter 'wpseo_frontend_presenters' - Allow filtering the presenter instances in or out of the request.
*
* @param array $presenters The presenters.
* @param Meta_Tags_Context $context The meta tags context for the current page.
*
* @api Abstract_Indexable_Presenter[] List of presenter instances.
*/
$presenter_instances = \apply_filters( 'wpseo_frontend_presenters', $presenters, $context );
if ( ! \is_array( $presenter_instances ) ) {
$presenter_instances = $presenters;
}
$is_presenter_callback = static function ( $presenter_instance ) {
return $presenter_instance instanceof Abstract_Indexable_Presenter;
};
$presenter_instances = \array_filter( $presenter_instances, $is_presenter_callback );
return \array_merge(
[ new Marker_Open_Presenter() ],
$presenter_instances,
[ new Marker_Close_Presenter() ]
);
}
/**
* Generate the array of presenters we need for the current request.
*
* @param string $page_type The page type we're retrieving presenters for.
*
* @return string[] The presenters.
*/
private function get_needed_presenters( $page_type ) {
$presenters = $this->get_presenters_for_page_type( $page_type );
$presenters = $this->maybe_remove_title_presenter( $presenters );
$callback = static function ( $presenter ) {
return "Yoast\WP\SEO\Presenters\\{$presenter}_Presenter";
};
$presenters = \array_map( $callback, $presenters );
/**
* Filter 'wpseo_frontend_presenter_classes' - Allow filtering presenters in or out of the request.
*
* @param array $presenters List of presenters.
* @param string $page_type The current page type.
*/
$presenters = \apply_filters( 'wpseo_frontend_presenter_classes', $presenters, $page_type );
return $presenters;
}
/**
* Filters the presenters based on the page type.
*
* @param string $page_type The page type.
*
* @return string[] The presenters.
*/
private function get_presenters_for_page_type( $page_type ) {
if ( $page_type === 'Error_Page' ) {
$presenters = $this->base_presenters;
if ( $this->options->get( 'opengraph' ) === true ) {
$presenters = \array_merge( $presenters, $this->open_graph_error_presenters );
}
return \array_merge( $presenters, $this->closing_presenters );
}
$presenters = $this->get_all_presenters();
if ( \in_array( $page_type, [ 'Static_Home_Page', 'Home_Page' ], true ) ) {
$presenters = \array_merge( $presenters, $this->webmaster_verification_presenters );
}
// Filter out the presenters only needed for singular pages on non-singular pages.
if ( ! \in_array( $page_type, [ 'Post_Type', 'Static_Home_Page' ], true ) ) {
$presenters = \array_diff( $presenters, $this->singular_presenters );
}
// Filter out `twitter:data` presenters for static home pages.
if ( $page_type === 'Static_Home_Page' ) {
$presenters = \array_diff( $presenters, $this->slack_presenters );
}
return $presenters;
}
/**
* Returns a list of all available presenters based on settings.
*
* @return string[] The presenters.
*/
private function get_all_presenters() {
$presenters = \array_merge( $this->base_presenters, $this->indexing_directive_presenters );
if ( $this->options->get( 'opengraph' ) === true ) {
$presenters = \array_merge( $presenters, $this->open_graph_presenters );
}
if ( $this->options->get( 'twitter' ) === true && \apply_filters( 'wpseo_output_twitter_card', true ) !== false ) {
$presenters = \array_merge( $presenters, $this->twitter_card_presenters );
}
if ( $this->options->get( 'enable_enhanced_slack_sharing' ) === true && \apply_filters( 'wpseo_output_enhanced_slack_data', true ) !== false ) {
$presenters = \array_merge( $presenters, $this->slack_presenters );
}
return \array_merge( $presenters, $this->closing_presenters );
}
/**
* Whether the title presenter should be removed.
*
* @return bool True when the title presenter should be removed, false otherwise.
*/
public function should_title_presenter_be_removed() {
return ! \get_theme_support( 'title-tag' ) && ! $this->options->get( 'forcerewritetitle', false );
}
/**
* Checks if the Title presenter needs to be removed.
*
* @param string[] $presenters The presenters.
*
* @return string[] The presenters.
*/
private function maybe_remove_title_presenter( $presenters ) {
// Do not remove the title if we're on a REST request.
if ( $this->request->is_rest_request() ) {
return $presenters;
}
// Remove the title presenter if the theme is hardcoded to output a title tag so we don't have two title tags.
if ( $this->should_title_presenter_be_removed() ) {
$presenters = \array_diff( $presenters, [ 'Title' ] );
}
return $presenters;
}
}
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