/**
* Add Schema.org Microdata in the footer.
*
* Mainly used to embed microdata to front page, posts index page and archives.
*/
function amt_add_jsonld_schemaorg_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_schemaorg_metadata', false)) {
return array();
}
$do_auto_schemaorg = $options["auto_schemaorg"] == "1" ? true : false;
if (!$do_auto_schemaorg) {
return array();
}
// Check if the microdata or the JSON-LD schema.org generator should be used.
if ($options["schemaorg_force_jsonld"] == "0") {
// Here we check for AMP page https://www.ampproject.org/
// For AMP pages, if the Schema.org microdata generator has been enabled,
// we enforce the JSON+LD form instead of microdata.
if ($do_auto_schemaorg && function_exists('is_amp_endpoint') && is_amp_endpoint()) {
// Do nothing and let it proceed with forced generation of JSON+LD Schema.org metadata.
} else {
return array();
}
}
$metadata_arr = array();
// Context
$metadata_arr['@context'] = 'http://schema.org';
// TODO: Check if this is_paged() check is needed. If removed, make sure that titles and descriptions are passed through multipage function.
if (is_paged()) {
//
// Currently we do not support adding Schema.org metadata on
// paged archives, if page number is >=2
//
// NOTE: This refers to an archive or the main page being split up over
// several pages, this does not refer to a Post or Page whose content
// has been divided into pages using the <!--nextpage--> QuickTag.
//
// Multipage content IS processed below.
//
return array();
}
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_jsonld_schemaorg', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_jsonld_schemaorg', $metadata_arr, $post, $options, $attachments, $embedded_media);
// Default fron tpage displaying the latest posts.
} elseif (amt_is_default_front_page()) {
// On the front page we are adding two top level entities, so we remove
// the existing context, as the entities need to be in an array and each
// array item needs its own context.
unset($metadata_arr['@context']);
// Organization
//
// NOTICE:
// Even if the front page has been set as the source of profile, this
// this does not work with the default front page with the latest posts.
// This is becuase this page does not have an author, which is essential
// for the generated metadata on a page that is supposed to be a profile.
// Therefore, an Organization object is always generated on the default
// front page and it is never treated as a profile page by Add-Meta-Tags.
//
$organization_arr = array();
// Context
$organization_arr['@context'] = 'http://schema.org';
// ID
$organization_arr['@id'] = amt_get_schemaorg_entity_id('organization');
$organization_arr = array_merge($organization_arr, amt_get_jsonld_schemaorg_publisher_array($options));
// mainEntityOfPage
$organization_arr['mainEntityOfPage'] = esc_url(trailingslashit(get_bloginfo('url')));
// Get publisher/mainEntity metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options ) );
// WebSite
$website_arr = array();
// Context
$website_arr['@context'] = 'http://schema.org';
// ID
$website_arr['@id'] = amt_get_schemaorg_entity_id('website');
// Type
$website_arr['@type'] = 'WebSite';
// name
$website_arr['name'] = esc_attr(get_bloginfo('name'));
// headline - contains title information
$website_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// alternateName (The WordPress tag line is used.)
// TODO: use tag line. Needs feedback!
// url
$website_arr['url'] = esc_url_raw(trailingslashit(get_bloginfo('url')));
// publisher
// $website_arr['publisher'] = array( '@id' => esc_attr(amt_get_schemaorg_entity_id('organization') ) );
// SearchAction
// Scope BEGIN: SearchAction: http://schema.org/SearchAction
// $metadata_arr[] = '<!-- Scope BEGIN: SearchAction -->';
// $metadata_arr[] = '<span itemprop="potentialAction" itemscope itemtype="http://schema.org/SearchAction">';
$website_arr['potentialAction'] = array();
$website_arr['potentialAction']['@type'] = 'SearchAction';
// target
// Scope BEGIN: EntryPoint: http://schema.org/EntryPoint
$website_arr['potentialAction']['target'] = array();
$website_arr['potentialAction']['target']['@type'] = 'EntryPoint';
// urlTemplate
$website_arr['potentialAction']['target']['urlTemplate'] = esc_url_raw(trailingslashit(get_bloginfo('url'))) . '?s={search_term}';
// Scope END: EntryPoint
// $metadata_arr[] = '</span> <!-- Scope END: EntryPoint -->';
// query-input
// Scope BEGIN: PropertyValueSpecification: http://schema.org/PropertyValueSpecification
//$metadata_arr[] = '<span itemprop="query-input" itemscope itemtype="http://schema.org/PropertyValueSpecification">';
$website_arr['potentialAction']['query-input'] = array();
$website_arr['potentialAction']['query-input']['@type'] = 'PropertyValueSpecification';
// valueRequired
$website_arr['potentialAction']['query-input']['valueRequired'] = 'True';
// valueName
$website_arr['potentialAction']['query-input']['valueName'] = 'search_term';
// Scope END: PropertyValueSpecification
// $metadata_arr[] = '</span> <!-- Scope END: PropertyValueSpecification -->';
// Scope END: SearchAction
// $metadata_arr[] = '</span> <!-- Scope END: SearchAction -->';
// Scope END: WebSite
// $metadata_arr[] = '</span> <!-- Scope END: WebSite -->';
$metadata_arr = array($organization_arr, $website_arr);
// Front page using a static page
} elseif (amt_is_static_front_page()) {
// On the front page we are adding two top level entities, so we remove
// the existing context, as the entities need to be in an array and each
// array item needs its own context.
unset($metadata_arr['@context']);
$main_entity_arr = array();
// Context
$main_entity_arr['@context'] = 'http://schema.org';
if ($options['author_profile_source'] == 'frontpage') {
// ID
$main_entity_arr['@id'] = amt_get_schemaorg_entity_id('person');
// Author
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
// Get author metatags
$main_entity_arr = array_merge($main_entity_arr, amt_get_jsonld_schemaorg_author_array($post->post_author, $options));
// mainEntityOfPage
$main_entity_arr['mainEntityOfPage'] = esc_url(trailingslashit(get_bloginfo('url')));
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
} else {
// ID
$main_entity_arr['@id'] = amt_get_schemaorg_entity_id('organization');
// Organization
$main_entity_arr = array_merge($main_entity_arr, amt_get_jsonld_schemaorg_publisher_array($options));
// mainEntityOfPage
$main_entity_arr['mainEntityOfPage'] = esc_url(trailingslashit(get_bloginfo('url')));
// Get publisher/mainEntity metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options ) );
}
// WebSite
$website_arr = array();
// Context
$website_arr['@context'] = 'http://schema.org';
// ID
$website_arr['@id'] = amt_get_schemaorg_entity_id('website');
// Type
$website_arr['@type'] = 'WebSite';
// name
$website_arr['name'] = esc_attr(get_bloginfo('name'));
// headline - contains title information
$website_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// alternateName (The WordPress tag line is used.)
// TODO: use tag line. Needs feedback!
// url
$website_arr['url'] = esc_url_raw(trailingslashit(get_bloginfo('url')));
// if ( $options['author_profile_source'] == 'frontpage' ) {
// author
//$website_arr['author'] = array( '@id' => esc_attr(amt_get_schemaorg_entity_id('person') ) );
// } else {
// publisher
//$website_arr['publisher'] = array( '@id' => esc_attr(amt_get_schemaorg_entity_id('organization') ) );
// }
// SearchAction
// Scope BEGIN: SearchAction: http://schema.org/SearchAction
// $metadata_arr[] = '<!-- Scope BEGIN: SearchAction -->';
// $metadata_arr[] = '<span itemprop="potentialAction" itemscope itemtype="http://schema.org/SearchAction">';
$website_arr['potentialAction'] = array();
$website_arr['potentialAction']['@type'] = 'SearchAction';
// target
// Scope BEGIN: EntryPoint: http://schema.org/EntryPoint
$website_arr['potentialAction']['target'] = array();
$website_arr['potentialAction']['target']['@type'] = 'EntryPoint';
// urlTemplate
$website_arr['potentialAction']['target']['urlTemplate'] = esc_url_raw(trailingslashit(get_bloginfo('url'))) . '?s={search_term}';
// Scope END: EntryPoint
// $metadata_arr[] = '</span> <!-- Scope END: EntryPoint -->';
// query-input
// Scope BEGIN: PropertyValueSpecification: http://schema.org/PropertyValueSpecification
//$metadata_arr[] = '<span itemprop="query-input" itemscope itemtype="http://schema.org/PropertyValueSpecification">';
$website_arr['potentialAction']['query-input'] = array();
$website_arr['potentialAction']['query-input']['@type'] = 'PropertyValueSpecification';
// valueRequired
$website_arr['potentialAction']['query-input']['valueRequired'] = 'True';
// valueName
$website_arr['potentialAction']['query-input']['valueName'] = 'search_term';
// Scope END: PropertyValueSpecification
// $metadata_arr[] = '</span> <!-- Scope END: PropertyValueSpecification -->';
// Scope END: SearchAction
// $metadata_arr[] = '</span> <!-- Scope END: SearchAction -->';
// Scope END: WebSite
// $metadata_arr[] = '</span> <!-- Scope END: WebSite -->';
$metadata_arr = array($main_entity_arr, $website_arr);
// Author archive
} elseif (is_author()) {
// Author object
// NOTE: Inside the author archives `$post->post_author` does not contain the author object.
// In this case the $post (get_queried_object()) contains the author object itself.
// We also can get the author object with the following code. Slug is what WP uses to construct urls.
// $author = get_user_by( 'slug', get_query_var( 'author_name' ) );
// Also, ``get_the_author_meta('....', $author)`` returns nothing under author archives.
// Access user meta with: $author->description, $author->user_email, etc
// $author = get_queried_object();
$author = $post;
// Person
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
$metadata_arr['@type'] = 'Person';
// headline - contains title information
// NOTE: Not supported for person
//$metadata_arr['headline'] = esc_attr( amt_get_title_for_metadata($options, $author) );
// Get author metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_author_metatags( $author->ID, $options ) );
$metadata_arr = array_merge($metadata_arr, amt_get_jsonld_schemaorg_author_array($author->ID, $options));
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(get_author_posts_url($author->ID));
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
} elseif (amt_is_product()) {
// Scope BEGIN: Product: http://schema.org/Product
// $metadata_arr[] = '<!-- Scope BEGIN: Product -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/Product"' . amt_get_schemaorg_itemref('product') . '>';
// Schema.org type
$metadata_arr['@type'] = 'Product';
// ID
$metadata_arr['@id'] = amt_get_schemaorg_entity_id('product');
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr['url'] = esc_url_raw(amt_get_permalink_for_multipage($post));
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(amt_get_permalink_for_multipage($post));
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['name'] = esc_attr(amt_process_paged(strip_tags(get_the_title($post->ID))));
// headline - contains title information
//$metadata_arr['headline'] = esc_attr( amt_get_title_for_metadata($options, $post) );
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
//if ( empty($content_desc) ) {
// // Use the post body as the description. Product objects do not support body text.
// // TODO: ERROR here $post_body var does not exist
// $content_desc = sanitize_text_field( amt_sanitize_description( $post_body ) );
//}
if (!empty($content_desc)) {
$metadata_arr['description'] = esc_attr(amt_process_paged($content_desc));
}
// Dates
$metadata_arr['releaseDate'] = esc_attr(amt_iso8601_date($post->post_date));
// Images
$metadata_arr['image'] = array();
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_product', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// $current_image_obj = array();
// $current_image_obj['@type'] = 'ImageObject';
// $current_image_obj['url'] = esc_url_raw( $global_image_override_url );
// $current_image_obj['contentUrl'] = esc_url_raw( $global_image_override_url );
// $metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_product', 'full');
// Get image metatags.
$metadata_arr['image'][] = amt_get_jsonld_schemaorg_image_array($options, $image, $size = $image_size);
// metadata END
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
}
// Scope END: ImageObject
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false) {
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_product', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
}
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
//$current_image_obj = array();
//$current_image_obj['@type'] = 'ImageObject';
//$current_image_obj['url'] = esc_url_raw( $options["default_image_url"] );
//$current_image_obj['contentUrl'] = esc_url_raw( $options["default_image_url"] );
//$metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Extend the current metadata with properties of the Product object.
// See: http://schema.org/Product
$metadata_arr = apply_filters('amt_product_data_jsonld_schemaorg', $metadata_arr, $post);
// Scope END: Product
// $metadata_arr[] = '</div> <!-- Scope END: Product -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_product', $metadata_arr);
// Add post body
// Remove last closing '</div>' tag, add post body and re-add the closing div afterwards.
// $closing_product_tag = array_pop($metadata_arr);
// Product objects do not support a 'text' itemprop. We just add a div for now
// for consistency with Article objects.
// TODO: it should allow filtering '<div>'
// $metadata_arr[] = '<div> <!-- Product text body: BEGIN -->';
// $metadata_arr[] = $post_body;
// $metadata_arr[] = '</div> <!-- Product text body: END -->';
// Now add closing tag for Article
// $metadata_arr[] = $closing_product_tag;
// Attachemnts
} elseif (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// Early metatags - Scope starts
if ('image' == $attachment_type) {
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/ImageObject"' . amt_get_schemaorg_itemref('attachment_image') . '>';
} elseif ('video' == $attachment_type) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// $metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/VideoObject"' . amt_get_schemaorg_itemref('attachment_video') . '>';
// Schema.org type
$metadata_arr['@type'] = 'VideoObject';
} elseif ('audio' == $attachment_type) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
// $metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/AudioObject"' . amt_get_schemaorg_itemref('attachment_audio') . '>';
// Schema.org type
$metadata_arr['@type'] = 'AudioObject';
} else {
// we do not currently support other attachment types, so we stop processing here
return array();
}
// Metadata common to all attachments
// Do not add a publisher on personal websites (static front page is source of author profile).
if ($options['author_profile_source'] != 'frontpage' || !amt_has_page_on_front()) {
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
// $metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
// $metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization"' . amt_get_schemaorg_itemref('organization') . '>';
// Get publisher metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options, $post->post_author ) );
$metadata_arr['publisher'] = amt_get_jsonld_schemaorg_publisher_array($options, $post->post_author);
// Scope END: Organization
// $metadata_arr[] = '</span> <!-- Scope END: Organization -->';
}
// Author
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
// Get author metatags
$metadata_arr['author'] = amt_get_jsonld_schemaorg_author_array($post->post_author, $options);
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
// name
$metadata_arr['name'] = esc_attr(strip_tags(get_the_title($post->ID)));
// headline - contains title information
$metadata_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr['description'] = esc_attr($content_desc);
}
// Dates
$metadata_arr['datePublished'] = esc_attr(amt_iso8601_date($post->post_date));
$metadata_arr['dateModified'] = esc_attr(amt_iso8601_date($post->post_modified));
$metadata_arr['copyrightYear'] = esc_attr(mysql2date('Y', $post->post_date));
// Language
$metadata_arr['inLanguage'] = esc_attr(str_replace('-', '_', amt_get_language_content($options, $post)));
// Thumbnail
// A featured image is supported by video and audio attachments.
// If one is set, then it is set as the thumbnail of the video/audio object.
if ('video' == $attachment_type || 'audio' == $attachment_type) {
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Thumbnail URL of the featured image
$image_size = apply_filters('amt_image_size_attachment', 'full');
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), $image_size);
$metadata_arr['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Currently we do not add a full ImageObject for the attachment's featured image.
// TODO: future
}
}
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(get_permalink($post->ID));
// Metadata specific to each attachment type
if ('image' == $attachment_type) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_attachment', 'full');
// Get image metatags. $post is an image object.
$metadata_arr = array_merge($metadata_arr, amt_get_jsonld_schemaorg_image_array($options, $post, $size = $image_size, $is_representative = true));
// Add the post body here
// $metadata_arr[] = $post_body;
// Scope END: ImageObject
// $metadata_arr[] = '</div> <!-- Scope END: ImageObject -->';
} elseif ('video' == $attachment_type) {
// Video specific metatags
// URL (links to image file)
//$metadata_arr['url'] = esc_url_raw( get_permalink( $post->ID ) );
$metadata_arr['url'] = esc_url_raw(wp_get_attachment_url($post->ID));
// sameAs (links to attachment page)
$metadata_arr['sameAs'] = esc_url_raw(get_permalink($post->ID));
$metadata_arr['contentUrl'] = esc_url_raw(wp_get_attachment_url($post->ID));
$metadata_arr['encodingFormat'] = esc_attr($mime_type);
// Required by Google
$metadata_arr['uploadDate'] = esc_attr(amt_iso8601_date($post->post_date));
// Add the post body here
// $metadata_arr[] = $post_body;
// Scope END: VideoObject
// $metadata_arr[] = '</div> <!-- Scope END: VideoObject -->';
} elseif ('audio' == $attachment_type) {
// Audio specific metatags
// URL (links to image file)
//$metadata_arr['url'] = esc_url_raw( get_permalink( $post->ID ) );
$metadata_arr['url'] = esc_url_raw(wp_get_attachment_url($post->ID));
// sameAs (links to attachment page)
$metadata_arr['sameAs'] = esc_url_raw(get_permalink($post->ID));
$metadata_arr['contentUrl'] = esc_url_raw(wp_get_attachment_url($post->ID));
$metadata_arr['encodingFormat'] = esc_attr($mime_type);
// Add the post body here
// $metadata_arr[] = $post_body;
// Scope END: AudioObject
// $metadata_arr[] = '</div> <!-- Scope END: AudioObject -->';
}
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_attachment', $metadata_arr);
// Content
// Posts, pages, custom content types (attachments excluded, caught in previous clause)
// Note: content might be multipage. Process with amt_process_paged() wherever needed.
} elseif (is_singular()) {
// Set main metadata entity. By default this set to Article.
$main_content_object = 'Article';
// Check for Page
// Main entity is set to WebPage on pages
// DEV NOTE: Since many themes already set the WebPage itemscope on the
// body element of the web page, set it to WebPage automatically would
// result in duplicate entities. So this has to be done manually via
// a filtering function.
// if ( is_page() ) {
// $main_content_object = 'WebPage';
// }
// Check for Review
$review_data = amt_get_review_data($post);
if (!empty($review_data)) {
$main_content_object = 'Review';
}
// Allow filtering the main metadata object for content.
$main_content_object = apply_filters('amt_schemaorg_object_main', $main_content_object);
// Scope BEGIN: Article: http://schema.org/Article
// $metadata_arr[] = '<!-- Scope BEGIN: ' . esc_attr($main_content_object) . ' -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/' . esc_attr($main_content_object) . '"' . amt_get_schemaorg_itemref('content') . '>';
// Schema.org type
$metadata_arr['@type'] = esc_attr($main_content_object);
// Do not add a publisher on personal websites (static front page is source of author profile).
if ($options['author_profile_source'] != 'frontpage' || !amt_has_page_on_front()) {
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
// $metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
// $metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization"' . amt_get_schemaorg_itemref('organization') . '>';
// Get publisher metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options, $post->post_author ) );
$metadata_arr['publisher'] = amt_get_jsonld_schemaorg_publisher_array($options, $post->post_author);
// Scope END: Organization
// $metadata_arr[] = '</span> <!-- Scope END: Organization -->';
}
// Author
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
// Get author metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_author_metatags( $post->post_author, $options ) );
$metadata_arr['author'] = amt_get_jsonld_schemaorg_author_array($post->post_author, $options);
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr['url'] = esc_url_raw(amt_get_permalink_for_multipage($post));
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(amt_get_permalink_for_multipage($post));
// Dates
$metadata_arr['datePublished'] = esc_attr(amt_iso8601_date($post->post_date));
$metadata_arr['dateModified'] = esc_attr(amt_iso8601_date($post->post_modified));
$metadata_arr['copyrightYear'] = esc_attr(mysql2date('Y', $post->post_date));
// Language
$metadata_arr['inLanguage'] = esc_attr(str_replace('-', '_', amt_get_language_content($options, $post)));
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['name'] = esc_attr(amt_process_paged(strip_tags(get_the_title($post->ID))));
// headline - contains title information
$metadata_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr['description'] = esc_attr(amt_process_paged($content_desc));
}
/*
// Section: We use the first category as the section
$first_cat = sanitize_text_field( amt_sanitize_keywords( amt_get_first_category($post) ) );
if (!empty($first_cat)) {
$metadata_arr[] = '<meta itemprop="articleSection" content="' . esc_attr( $first_cat ) . '" />';
}
*/
// Add articleSection in Article object only.
if ($main_content_object == 'Article') {
$categories = get_the_category($post->ID);
$categories = apply_filters('amt_post_categories_for_schemaorg', $categories);
foreach ($categories as $cat) {
$section = trim($cat->cat_name);
if (!empty($section) && $cat->slug != 'uncategorized') {
$metadata_arr['articleSection'] = esc_attr($section);
}
}
}
// Add review properties if Review
if ($main_content_object == 'Review') {
// $metadata_arr[] = '<!-- Review Information BEGIN -->';
// $metadata_arr[] = amt_get_review_info_box( $review_data );
// $metadata_arr[] = '<!-- Review Information END -->';
// Reviewed Item
$metadata_arr['itemReviewed'] = array();
$metadata_arr['itemReviewed']['@type'] = esc_attr($review_data['object']);
$metadata_arr['itemReviewed']['name'] = esc_attr($review_data['name']);
$metadata_arr['itemReviewed']['sameAs'] = esc_url_raw($review_data['sameAs']);
// Extra properties of reviewed item
foreach ($review_data['extra'] as $key => $value) {
if (is_array($value)) {
// Add sub entity
// If it is an array, the 'object' property is mandatory
if (!array_key_exists('object', $value)) {
continue;
}
$metadata_arr['itemReviewed'][esc_attr($key)] = array();
$metadata_arr['itemReviewed'][esc_attr($key)]['@type'] = esc_attr($value['object']);
foreach ($value as $subkey => $subvalue) {
if ($subkey != 'object') {
if (in_array($subkey, array('url', 'sameAs'))) {
$metadata_arr['itemReviewed'][esc_attr($key)][esc_attr($subkey)] = esc_url_raw($subvalue);
} else {
$metadata_arr['itemReviewed'][esc_attr($key)][esc_attr($subkey)] = esc_attr($subvalue);
}
}
}
} else {
// Add simple meta element
$metadata_arr['itemReviewed'][esc_attr($key)] = esc_attr($value);
}
}
// Rating
$metadata_arr['reviewRating'] = array();
$metadata_arr['reviewRating']['@type'] = 'Rating';
$metadata_arr['reviewRating']['ratingValue'] = esc_attr($review_data['ratingValue']);
$bestrating = apply_filters('amt_schemaorg_review_bestrating', '5');
$metadata_arr['reviewRating']['bestRating'] = esc_attr($bestrating);
}
// Keywords - We use the keywords defined by Add-Meta-Tags
$keywords = amt_get_content_keywords($post);
if (!empty($keywords)) {
$metadata_arr['keywords'] = esc_attr($keywords);
}
// Referenced Items
$referenced_url_list = amt_get_referenced_items($post);
if (!empty($referenced_url_list)) {
$metadata_arr['referencedItem'] = array();
foreach ($referenced_url_list as $referenced_url) {
$referenced_url = trim($referenced_url);
if (!empty($referenced_url)) {
$metadata_arr['referencedItem'][] = esc_url_raw($referenced_url);
}
}
}
// Images
$metadata_arr['image'] = array();
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// $current_image_obj = array();
// $current_image_obj['@type'] = 'ImageObject';
// $current_image_obj['url'] = esc_url_raw( $global_image_override_url );
// $current_image_obj['contentUrl'] = esc_url_raw( $global_image_override_url );
// $metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// Media Limits
$image_limit = amt_metadata_get_image_limit($options);
$video_limit = amt_metadata_get_video_limit($options);
$audio_limit = amt_metadata_get_audio_limit($options);
// Counters
$ic = 0;
// image counter
$vc = 0;
// video counter
$ac = 0;
// audio counter
// We store the featured image ID in this variable so that it can easily be excluded
// when all images are parsed from the $attachments array.
$featured_image_id = 0;
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Thumbnail URL
// First add the thumbnail URL of the featured image
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'thumbnail');
$metadata_arr['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Add full image object for featured image.
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_image_metatags( $options, $image, $size=$image_size ) );
$metadata_arr['image'][] = amt_get_jsonld_schemaorg_image_array($options, $image, $size = $image_size);
// metadata END
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Finally, set the $featured_image_id
$featured_image_id = get_post_thumbnail_id($post->ID);
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
}
// Scope END: ImageObject
// Process all attachments and add metatags (featured image will be excluded)
foreach ($attachments as $attachment) {
// Excluded the featured image since
if ($attachment->ID != $featured_image_id) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type && $ic < $image_limit) {
// metadata BEGIN
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_image_metatags( $options, $attachment, $size=$image_size ) );
$metadata_arr['image'][] = amt_get_jsonld_schemaorg_image_array($options, $attachment, $size = $image_size);
// metadata END
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
} elseif ('video' == $attachment_type && $vc < $video_limit) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// $metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// $metadata_arr[] = '<span itemprop="video" itemscope itemtype="http://schema.org/VideoObject">';
// Video specific metatags
// URL (for attachments: links to attachment page)
$current_video_obj = array();
$current_video_obj['@type'] = 'VideoObject';
// URL (links to image file)
//$current_video_obj['url'] = esc_url_raw( get_permalink( $attachment->ID ) );
$current_video_obj['url'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
// sameAs (links to attachment page)
$current_video_obj['sameAs'] = esc_url_raw(get_permalink($attachment->ID));
$current_video_obj['contentUrl'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
$current_video_obj['encodingFormat'] = esc_attr($mime_type);
// name
$current_video_obj['name'] = esc_attr(strip_tags(get_the_title($attachment->ID)));
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($attachment);
if (!empty($content_desc)) {
$current_video_obj['description'] = esc_attr($content_desc);
}
// Thumbnail
// A featured image is supported by video and audio attachments.
// If one is set, then it is set as the thumbnail of the video/audio object.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($attachment->ID)) {
// Thumbnail URL of the featured image
$image_size = apply_filters('amt_image_size_content', 'full');
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($attachment->ID), $image_size);
$current_video_obj['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Currently we do not add a full ImageObject for the attachment's featured image.
// TODO: future
}
// uploadDate
$current_video_obj['uploadDate'] = esc_attr(amt_iso8601_date($attachment->post_date));
$metadata_arr['video'][] = $current_video_obj;
// Scope END: VideoObject
// $metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
// Increase video counter
$vc++;
} elseif ('audio' == $attachment_type && $ac < $audio_limit) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
// $metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// $metadata_arr[] = '<span itemprop="audio" itemscope itemtype="http://schema.org/AudioObject">';
// Audio specific metatags
// URL (for attachments: links to attachment page)
$current_audio_obj = array();
$current_audio_obj['@type'] = 'AudioObject';
// URL (links to image file)
//$current_audio_obj['url'] = esc_url_raw( get_permalink( $attachment->ID ) );
$current_audio_obj['url'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
// sameAs (links to attachment page)
$current_audio_obj['sameAs'] = esc_url_raw(get_permalink($attachment->ID));
$current_audio_obj['contentUrl'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
$current_audio_obj['encodingFormat'] = esc_attr($mime_type);
// name
$current_audio_obj['name'] = esc_attr(strip_tags(get_the_title($attachment->ID)));
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($attachment);
if (!empty($content_desc)) {
$current_audio_obj['description'] = esc_attr($content_desc);
}
// Thumbnail
// A featured image is supported by video and audio attachments.
// If one is set, then it is set as the thumbnail of the video/audio object.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($attachment->ID)) {
// Thumbnail URL of the featured image
$image_size = apply_filters('amt_image_size_content', 'full');
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($attachment->ID), $image_size);
$current_audio_obj['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Currently we do not add a full ImageObject for the attachment's featured image.
// TODO: future
}
// uploadDate
$current_audio_obj['uploadDate'] = esc_attr(amt_iso8601_date($attachment->post_date));
$metadata_arr['audio'][] = $current_audio_obj;
// Scope END: AudioObject
// $metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
// Increase audio counter
$ac++;
}
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
if ($ic == $image_limit) {
break;
}
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$current_image_obj = array();
$current_image_obj['@type'] = 'ImageObject';
// name (title)
$current_image_obj['name'] = esc_attr($embedded_item['alt']);
// caption
$current_image_obj['caption'] = esc_attr($embedded_item['alt']);
// alt
$current_image_obj['text'] = esc_attr($embedded_item['alt']);
// URL (links to image file)
//$current_image_obj['url'] = esc_url_raw( $embedded_item['page'] );
$current_image_obj['url'] = esc_url_raw($embedded_item['image']);
// sameAs (links to attachment page)
$current_image_obj['sameAs'] = esc_url_raw($embedded_item['page']);
// thumbnail url
$current_image_obj['thumbnailUrl'] = esc_url_raw($embedded_item['thumbnail']);
// main image
$current_image_obj['contentUrl'] = esc_url_raw($embedded_item['image']);
if (apply_filters('amt_extended_image_tags', true)) {
$current_image_obj['width'] = esc_attr($embedded_item['width']);
$current_image_obj['height'] = esc_attr($embedded_item['height']);
$current_image_obj['encodingFormat'] = 'image/jpeg';
}
// embedURL
$current_image_obj['embedURL'] = esc_url_raw($embedded_item['player']);
$metadata_arr['image'][] = $current_image_obj;
// Scope END: ImageObject
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
}
foreach ($embedded_media['videos'] as $embedded_item) {
if ($vc == $video_limit) {
break;
}
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// See: http://googlewebmastercentral.blogspot.gr/2012/02/using-schemaorg-markup-for-videos.html
// See: https://support.google.com/webmasters/answer/2413309?hl=en
// $metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// $metadata_arr[] = '<span itemprop="video" itemscope itemtype="http://schema.org/VideoObject">';
$current_video_obj = array();
// Video Embed URL
$current_video_obj['embedURL'] = esc_url_raw($embedded_item['player']);
// playerType
$current_video_obj['playerType'] = 'application/x-shockwave-flash';
// size
$current_video_obj['width'] = esc_attr($embedded_item['width']);
$current_video_obj['height'] = esc_attr($embedded_item['height']);
$metadata_arr['video'][] = $current_video_obj;
// Scope END: VideoObject
// $metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
// Increase video counter
$vc++;
}
foreach ($embedded_media['sounds'] as $embedded_item) {
if ($ac == $audio_limit) {
break;
}
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
// $metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// $metadata_arr[] = '<span itemprop="audio" itemscope itemtype="http://schema.org/AudioObject">';
$current_audio_obj = array();
// Audio Embed URL
$current_audio_obj['embedURL'] = esc_url_raw($embedded_item['player']);
// playerType
$current_audio_obj['playerType'] = 'application/x-shockwave-flash';
$metadata_arr['audio'][] = $current_audio_obj;
// Scope END: AudioObject
// $metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
// Increase audio counter
$ac++;
}
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false) {
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
}
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$current_image_obj = array();
$current_image_obj['@type'] = 'ImageObject';
$current_image_obj['url'] = esc_url_raw($options["default_image_url"]);
$current_image_obj['contentUrl'] = esc_url_raw($options["default_image_url"]);
$metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Article Body
// The article body is added after filtering the generated microdata below.
// TODO: also check: comments, contributor, copyrightHolder, , creator, dateCreated, discussionUrl, editor, version (use post revision if possible)
// Scope END: Article
// $metadata_arr[] = '</div> <!-- Scope END: ' . esc_attr($main_content_object) . ' -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_content', $metadata_arr);
// Add articleBody to Artice
// Now add the article. Remove last closing '</span>' tag, add articleBody and re-add the closing span afterwards.
// $closing_article_tag = array_pop($metadata_arr);
// Use the 'text' itemprop by default for the main text body of the CreativeWork,
// so it can be used by more subtypes than Article.
// But set it explicitly to 'articleBody if the main entiry is 'Article'
// or 'reviewBody' if the main entity is a 'Review'.
$main_text_property = 'text';
if ($main_content_object == 'Article') {
$main_text_property = 'articleBody';
} elseif ($main_content_object == 'Review') {
$main_text_property = 'reviewBody';
}
// Allow filtering of the main text property.
$main_text_property = apply_filters('amt_schemaorg_property_main_text', $main_text_property);
// $metadata_arr[] = '<div itemprop="' . esc_attr($main_text_property) . '">';
// Add main content
//$metadata_arr[ esc_attr($main_text_property) ] = $post->post_content;
// $metadata_arr[] = $post_body;
// $metadata_arr[] = '</div> <!-- Itemprop END: ' . esc_attr($main_text_property) . ' -->';
// Now add closing tag for Article
// $metadata_arr[] = $closing_article_tag;
}
// Add our comment
// if ( count( $metadata_arr ) > 0 ) {
// array_unshift( $metadata_arr, "<!-- BEGIN Schema.org microdata added by Add-Meta-Tags WordPress plugin -->" );
// array_unshift( $metadata_arr, "" ); // Intentionaly left empty
// array_push( $metadata_arr, "<!-- END Schema.org microdata added by Add-Meta-Tags WordPress plugin -->" );
// array_push( $metadata_arr, "" ); // Intentionaly left empty
// }
//return $post_body;
// return implode( PHP_EOL, $metadata_arr );
// Filtering of the generated microdata for footer
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_head', $metadata_arr);
// if ( count( $metadata_arr ) > 0 ) {
// array_unshift( $metadata_arr, '<script type="application/ld+json">' );
// array_unshift( $metadata_arr, "" ); // Intentionaly left empty
// array_push( $metadata_arr, '</script>' );
// array_push( $metadata_arr, "" ); // Intentionaly left empty
// }
// return $metadata_arr;
if (count($metadata_arr) > 1) {
// contains @context by default
return array('<script type="application/ld+json">', 'json+ld_data' => json_encode($metadata_arr), '</script>');
} else {
return array();
}
}
/**
* Filter function that generates and embeds Schema.org metadata in the content.
*/
function amt_add_schemaorg_metadata_content_filter($post_body)
{
if (is_feed()) {
return $post_body;
}
if (!is_singular() || is_front_page()) {
// is_front_page() is used for the case in which a static page is used as the front page.
// In this filter function we only deal with content and attachments.
return $post_body;
}
// Get the options the DB
$options = get_option("add_meta_tags_opts");
$do_auto_schemaorg = $options["auto_schemaorg"] == "1" ? true : false;
if (!$do_auto_schemaorg) {
return $post_body;
}
// Get current post object
$post = get_queried_object();
$metadata_arr = array();
// Since this is a function that is hooked to the 'the_content' filter
// of WordPress, the post type check has not run, so this happens here.
// Check if metadata is supported on this content type.
$post_type = get_post_type($post);
if (!in_array($post_type, amt_get_supported_post_types())) {
return $post_body;
}
// Get an array containing the attachments
$attachments = amt_get_ordered_attachments($post);
//var_dump($attachments);
// Get an array containing the URLs of the embedded media
$embedded_media = amt_get_embedded_media($post);
//var_dump($embedded_media);
// Products
if (amt_is_product()) {
// Scope BEGIN: Product: http://schema.org/Product
$metadata_arr[] = '<!-- Scope BEGIN: Product -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_product', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/Product"' . $itemref_attrib . '>';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta itemprop="name" content="' . esc_attr(amt_process_paged(get_the_title($post->ID))) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (empty($content_desc)) {
// Use the post body as the description. Product objects do not support body text.
$content_desc = sanitize_text_field(amt_sanitize_description($post_body));
}
if (!empty($content_desc)) {
$metadata_arr[] = '<meta itemprop="description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Dates
$metadata_arr[] = '<meta itemprop="releaseDate" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
// Images
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$global_image_override_url = amt_get_post_meta_image_url($post->ID);
if (!empty($global_image_override_url)) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($global_image_override_url) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_product', 'full');
// Get image metatags.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($image, $size = $image_size));
// metadata END
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
}
// Scope END: ImageObject
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false && !empty($options["default_image_url"])) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($options["default_image_url"]) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Extend the current metadata with properties of the Product object.
// See: http://schema.org/Product
$metadata_arr = apply_filters('amt_product_data_schemaorg', $metadata_arr, $post);
// Scope END: Product
$metadata_arr[] = '</div> <!-- Scope END: Product -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_schemaorg_metadata_product', $metadata_arr);
// Add post body
// Remove last closing '</div>' tag, add post body and re-add the closing div afterwards.
$closing_product_tag = array_pop($metadata_arr);
// Product objects do not support a 'text' itemprop. We just add a div for now
// for consistency with Article objects.
// TODO: it should allow filtering '<div>'
$metadata_arr[] = '<div> <!-- Product text body: BEGIN -->';
$metadata_arr[] = $post_body;
$metadata_arr[] = '</div> <!-- Product text body: END -->';
// Now add closing tag for Article
$metadata_arr[] = $closing_product_tag;
// Attachemnts
} elseif (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// Early metatags - Scope starts
if ('image' == $attachment_type) {
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_attachment_image', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/ImageObject"' . $itemref_attrib . '>';
} elseif ('video' == $attachment_type) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
$metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_attachment_video', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/VideoObject"' . $itemref_attrib . '>';
} elseif ('audio' == $attachment_type) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
$metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_attachment_audio', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/AudioObject"' . $itemref_attrib . '>';
} else {
// we do not currently support other attachment types, so we stop processing here
return $post_body;
}
// Metadata commong to all attachments
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
$metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
$metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization">';
// Get publisher metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_publisher_metatags($options, $post->post_author));
// Scope END: Organization
$metadata_arr[] = '</span> <!-- Scope END: Organization -->';
// Author
// Scope BEGIN: Person: http://schema.org/Person
$metadata_arr[] = '<!-- Scope BEGIN: Person -->';
$metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person">';
// Get author metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_author_metatags($post->post_author));
// Scope END: Person
$metadata_arr[] = '</span> <!-- Scope END: Person -->';
// Dates
$metadata_arr[] = '<meta itemprop="datePublished" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta itemprop="dateModified" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
$metadata_arr[] = '<meta itemprop="copyrightYear" content="' . esc_attr(mysql2date('Y', $post->post_date)) . '" />';
// Language
$metadata_arr[] = '<meta itemprop="inLanguage" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options))) . '" />';
// Metadata specific to each attachment type
if ('image' == $attachment_type) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_attachment', 'full');
// Get image metatags. $post is an image object.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($post, $size = $image_size, $is_representative = true));
// Add the post body here
$metadata_arr[] = $post_body;
// Scope END: ImageObject
$metadata_arr[] = '</div> <!-- Scope END: ImageObject -->';
} elseif ('video' == $attachment_type) {
// Video specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Add the post body here
$metadata_arr[] = $post_body;
// Scope END: VideoObject
$metadata_arr[] = '</div> <!-- Scope END: VideoObject -->';
} elseif ('audio' == $attachment_type) {
// Audio specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Add the post body here
$metadata_arr[] = $post_body;
// Scope END: AudioObject
$metadata_arr[] = '</div> <!-- Scope END: AudioObject -->';
}
// Content
} else {
// Set main metadata entity. By default this set to Article.
$main_content_object = 'Article';
// Check for Page
// Main entity is set to WebPage on pages
// DEV NOTE: Since many themes already set the WebPage itemscope on the
// body element of the web page, set it to WebPage automatically would
// result in duplicate entities. So this has to be done manually via
// a filtering function.
// if ( is_page() ) {
// $main_content_object = 'WebPage';
// }
// Check for Review
$express_review_field_data = amt_get_post_meta_express_review($post->ID);
$review_data = array();
if (!empty($express_review_field_data)) {
$review_data = amt_get_review_data($express_review_field_data);
if (!empty($review_data)) {
$main_content_object = 'Review';
}
}
// Allow filtering the main metadata object for content.
$main_content_object = apply_filters('amt_schemaorg_object_main', $main_content_object);
// Scope BEGIN: Article: http://schema.org/Article
$metadata_arr[] = '<!-- Scope BEGIN: ' . esc_attr($main_content_object) . ' -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_content', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/' . esc_attr($main_content_object) . '"' . $itemref_attrib . '>';
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
$metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
$metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization">';
// Get publisher metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_publisher_metatags($options, $post->post_author));
// Scope END: Organization
$metadata_arr[] = '</span> <!-- Scope END: Organization -->';
// Author
// Scope BEGIN: Person: http://schema.org/Person
$metadata_arr[] = '<!-- Scope BEGIN: Person -->';
$metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person">';
// Get publisher metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_author_metatags($post->post_author));
// Scope END: Person
$metadata_arr[] = '</span> <!-- Scope END: Person -->';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
// Dates
$metadata_arr[] = '<meta itemprop="datePublished" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta itemprop="dateModified" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
$metadata_arr[] = '<meta itemprop="copyrightYear" content="' . esc_attr(mysql2date('Y', $post->post_date)) . '" />';
// Language
$metadata_arr[] = '<meta itemprop="inLanguage" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options))) . '" />';
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta itemprop="name" content="' . esc_attr(amt_process_paged(get_the_title($post->ID))) . '" />';
// headline
$metadata_arr[] = '<meta itemprop="headline" content="' . esc_attr(get_the_title($post->ID)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta itemprop="description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
/*
// Section: We use the first category as the section
$first_cat = sanitize_text_field( amt_sanitize_keywords( amt_get_first_category($post) ) );
if (!empty($first_cat)) {
$metadata_arr[] = '<meta itemprop="articleSection" content="' . esc_attr( $first_cat ) . '" />';
}
*/
// Add articleSection in Article object only.
if ($main_content_object == 'Article') {
$categories = get_the_category($post->ID);
$categories = apply_filters('amt_post_categories_for_schemaorg', $categories);
foreach ($categories as $cat) {
$section = trim($cat->cat_name);
if (!empty($section) && $cat->slug != 'uncategorized') {
$metadata_arr[] = '<meta itemprop="articleSection" content="' . esc_attr($section) . '" />';
}
}
}
// Add review properties if Review
if ($main_content_object == 'Review') {
$metadata_arr[] = '<!-- Review Information BEGIN -->';
$metadata_arr[] = amt_get_review_info_box($review_data);
$metadata_arr[] = '<!-- Review Information END -->';
}
// Keywords - We use the keywords defined by Add-Meta-Tags
$keywords = amt_get_content_keywords($post);
if (!empty($keywords)) {
$metadata_arr[] = '<meta itemprop="keywords" content="' . esc_attr($keywords) . '" />';
}
// Referenced Items
$referenced_url_list = amt_get_referenced_items($post);
foreach ($referenced_url_list as $referenced_url) {
$referenced_url = trim($referenced_url);
if (!empty($referenced_url)) {
$metadata_arr[] = '<meta itemprop="referencedItem" content="' . esc_url_raw($referenced_url) . '" />';
}
}
// Images
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$global_image_override_url = amt_get_post_meta_image_url($post->ID);
if (!empty($global_image_override_url)) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($global_image_override_url) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// We store the featured image ID in this variable so that it can easily be excluded
// when all images are parsed from the $attachments array.
$featured_image_id = 0;
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Thumbnail URL
// First add the thumbnail URL of the featured image
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'thumbnail');
$metadata_arr[] = '<meta itemprop="thumbnailUrl" content="' . esc_url_raw($thumbnail_info[0]) . '" />';
// Add full image object for featured image.
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($image, $size = $image_size));
// metadata END
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Finally, set the $featured_image_id
$featured_image_id = get_post_thumbnail_id($post->ID);
// Images have been found.
$has_images = true;
}
// Scope END: ImageObject
// Process all attachments and add metatags (featured image will be excluded)
foreach ($attachments as $attachment) {
// Excluded the featured image since
if ($attachment->ID != $featured_image_id) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type) {
// metadata BEGIN
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($attachment, $size = $image_size));
// metadata END
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
} elseif ('video' == $attachment_type) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
$metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/VideoObject">';
// Video specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Scope END: VideoObject
$metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
} elseif ('audio' == $attachment_type) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
$metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/AudioObject">';
// Audio specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Scope END: AudioObject
$metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
}
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
// name (title)
$metadata_arr[] = '<meta itemprop="name" content="' . esc_attr($embedded_item['alt']) . '" />';
// caption
$metadata_arr[] = '<meta itemprop="caption" content="' . esc_attr($embedded_item['alt']) . '" />';
// alt
$metadata_arr[] = '<meta itemprop="text" content="' . esc_attr($embedded_item['alt']) . '" />';
// URL (links to web page containing the image)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw($embedded_item['page']) . '" />';
// thumbnail url
$metadata_arr[] = '<meta itemprop="thumbnailUrl" content="' . esc_url_raw($embedded_item['thumbnail']) . '" />';
// main image
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($embedded_item['image']) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta itemprop="width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta itemprop="height" content="' . esc_attr($embedded_item['height']) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="image/jpeg" />';
}
// embedURL
$metadata_arr[] = '<meta itemprop="embedURL" content="' . esc_url_raw($embedded_item['player']) . '" />';
// Scope END: ImageObject
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
}
foreach ($embedded_media['videos'] as $embedded_item) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// See: http://googlewebmastercentral.blogspot.gr/2012/02/using-schemaorg-markup-for-videos.html
// See: https://support.google.com/webmasters/answer/2413309?hl=en
$metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
$metadata_arr[] = '<span itemprop="video" itemscope itemtype="http://schema.org/VideoObject">';
// Video Embed URL
$metadata_arr[] = '<meta itemprop="embedURL" content="' . esc_url_raw($embedded_item['player']) . '" />';
// playerType
$metadata_arr[] = '<meta itemprop="playerType" content="application/x-shockwave-flash" />';
// size
$metadata_arr[] = '<meta itemprop="width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta itemprop="height" content="' . esc_attr($embedded_item['height']) . '" />';
// Scope END: VideoObject
$metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
}
foreach ($embedded_media['sounds'] as $embedded_item) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
$metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
$metadata_arr[] = '<span itemprop="audio" itemscope itemtype="http://schema.org/AudioObject">';
// Audio Embed URL
$metadata_arr[] = '<meta itemprop="embedURL" content="' . esc_url_raw($embedded_item['player']) . '" />';
// playerType
$metadata_arr[] = '<meta itemprop="playerType" content="application/x-shockwave-flash" />';
// Scope END: AudioObject
$metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
}
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false && !empty($options["default_image_url"])) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($options["default_image_url"]) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Article Body
// The article body is added after filtering the generated microdata below.
// TODO: also check: comments, contributor, copyrightHolder, , creator, dateCreated, discussionUrl, editor, version (use post revision if possible)
// Scope END: Article
$metadata_arr[] = '</div> <!-- Scope END: ' . esc_attr($main_content_object) . ' -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_schemaorg_metadata_content', $metadata_arr);
// Add articleBody to Artice
// Now add the article. Remove last closing '</span>' tag, add articleBody and re-add the closing span afterwards.
$closing_article_tag = array_pop($metadata_arr);
// Use the 'text' itemprop by default for the main text body of the CreativeWork,
// so it can be used by more subtypes than Article.
// But set it explicitly to 'articleBody if the main entiry is 'Article'
// or 'reviewBody' if the main entity is a 'Review'.
$main_text_property = 'text';
if ($main_content_object == 'Article') {
$main_text_property = 'articleBody';
} elseif ($main_content_object == 'Review') {
$main_text_property = 'reviewBody';
}
// Allow filtering of the main text property.
$main_text_property = apply_filters('amt_schemaorg_property_main_text', $main_text_property);
$metadata_arr[] = '<div itemprop="' . esc_attr($main_text_property) . '">';
$metadata_arr[] = $post_body;
$metadata_arr[] = '</div> <!-- Itemprop END: ' . esc_attr($main_text_property) . ' -->';
// Now add closing tag for Article
$metadata_arr[] = $closing_article_tag;
}
// Add our comment
if (count($metadata_arr) > 0) {
array_unshift($metadata_arr, "<!-- BEGIN Schema.org microdata added by Add-Meta-Tags WordPress plugin -->");
array_unshift($metadata_arr, "");
// Intentionaly left empty
array_push($metadata_arr, "<!-- END Schema.org microdata added by Add-Meta-Tags WordPress plugin -->");
array_push($metadata_arr, "");
// Intentionaly left empty
}
//return $post_body;
return implode(PHP_EOL, $metadata_arr);
}