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<?php
namespace Yoast\WP\SEO\Generators\Schema;
use Yoast\WP\SEO\Config\Schema_IDs;
/**
* Returns schema Article data.
*/
class Article extends Abstract_Schema_Piece {
/**
* Determines whether or not a piece should be added to the graph.
*
* @return bool
*/
public function is_needed() {
if ( $this->context->indexable->object_type !== 'post' ) {
return false;
}
// If we cannot output a publisher, we shouldn't output an Article.
if ( $this->context->site_represents === false ) {
return false;
}
// If we cannot output an author, we shouldn't output an Article.
if ( ! $this->helpers->schema->article->is_author_supported( $this->context->indexable->object_sub_type ) ) {
return false;
}
if ( $this->context->schema_article_type !== 'None' ) {
$this->context->main_schema_id = $this->context->canonical . Schema_IDs::ARTICLE_HASH;
return true;
}
return false;
}
/**
* Returns Article data.
*
* @return array $data Article data.
*/
public function generate() {
$data = [
'@type' => $this->context->schema_article_type,
'@id' => $this->context->canonical . Schema_IDs::ARTICLE_HASH,
'isPartOf' => [ '@id' => $this->context->canonical . Schema_IDs::WEBPAGE_HASH ],
'author' => [ '@id' => $this->helpers->schema->id->get_user_schema_id( $this->context->post->post_author, $this->context ) ],
'headline' => $this->helpers->schema->html->smart_strip_tags( $this->helpers->post->get_post_title_with_fallback( $this->context->id ) ),
'datePublished' => $this->helpers->date->format( $this->context->post->post_date_gmt ),
'dateModified' => $this->helpers->date->format( $this->context->post->post_modified_gmt ),
'mainEntityOfPage' => [ '@id' => $this->context->canonical . Schema_IDs::WEBPAGE_HASH ],
];
// If the comments are open -or- there are comments approved, show the count.
$comments_open = \comments_open( $this->context->id );
$comment_count = \get_comment_count( $this->context->id );
if ( $comments_open || $comment_count['approved'] > 0 ) {
$data['commentCount'] = $comment_count['approved'];
}
if ( $this->context->site_represents_reference ) {
$data['publisher'] = $this->context->site_represents_reference;
}
$data = $this->add_image( $data );
$data = $this->add_keywords( $data );
$data = $this->add_sections( $data );
$data = $this->helpers->schema->language->add_piece_language( $data );
if ( \post_type_supports( $this->context->post->post_type, 'comments' ) && $this->context->post->comment_status === 'open' ) {
$data = $this->add_potential_action( $data );
}
return $data;
}
/**
* Adds tags as keywords, if tags are assigned.
*
* @param array $data Article data.
*
* @return array $data Article data.
*/
private function add_keywords( $data ) {
/**
* Filter: 'wpseo_schema_article_keywords_taxonomy' - Allow changing the taxonomy used to assign keywords to a post type Article data.
*
* @api string $taxonomy The chosen taxonomy.
*/
$taxonomy = \apply_filters( 'wpseo_schema_article_keywords_taxonomy', 'post_tag' );
return $this->add_terms( $data, 'keywords', $taxonomy );
}
/**
* Adds categories as sections, if categories are assigned.
*
* @param array $data Article data.
*
* @return array $data Article data.
*/
private function add_sections( $data ) {
/**
* Filter: 'wpseo_schema_article_sections_taxonomy' - Allow changing the taxonomy used to assign keywords to a post type Article data.
*
* @api string $taxonomy The chosen taxonomy.
*/
$taxonomy = \apply_filters( 'wpseo_schema_article_sections_taxonomy', 'category' );
return $this->add_terms( $data, 'articleSection', $taxonomy );
}
/**
* Adds a term or multiple terms, comma separated, to a field.
*
* @param array $data Article data.
* @param string $key The key in data to save the terms in.
* @param string $taxonomy The taxonomy to retrieve the terms from.
*
* @return mixed array $data Article data.
*/
protected function add_terms( $data, $key, $taxonomy ) {
$terms = \get_the_terms( $this->context->id, $taxonomy );
if ( ! \is_array( $terms ) ) {
return $data;
}
$callback = function( $term ) {
// We are using the WordPress internal translation.
return $term->name !== \__( 'Uncategorized', 'default' );
};
$terms = \array_filter( $terms, $callback );
if ( empty( $terms ) ) {
return $data;
}
$data[ $key ] = \implode( ',', \wp_list_pluck( $terms, 'name' ) );
return $data;
}
/**
* Adds an image node if the post has a featured image.
*
* @param array $data The Article data.
*
* @return array $data The Article data.
*/
private function add_image( $data ) {
if ( $this->context->has_image ) {
$data['image'] = [
'@id' => $this->context->canonical . Schema_IDs::PRIMARY_IMAGE_HASH,
];
}
return $data;
}
/**
* Adds the potential action property to the Article Schema piece.
*
* @param array $data The Article data.
*
* @return array $data The Article data with the potential action added.
*/
private function add_potential_action( $data ) {
/**
* Filter: 'wpseo_schema_article_potential_action_target' - Allows filtering of the schema Article potentialAction target.
*
* @api array $targets The URLs for the Article potentialAction target.
*/
$targets = \apply_filters( 'wpseo_schema_article_potential_action_target', [ $this->context->canonical . '#respond' ] );
$data['potentialAction'][] = [
'@type' => 'CommentAction',
'name' => 'Comment',
'target' => $targets,
];
return $data;
}
}
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