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Robots: Add max-image-preview:large directive by default.

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This changeset introduces a `wp_robots_max_image_preview_large()` function which is hooked into the `wp_robots` filter to include the `max-image-preview:large` directive for all sites which are configured to be indexed by search engines. The directive allows search engines to display large image previews for the site in search results.

Props adamsilverstein, Clorith, flixos90, helen, joostdevalk, tweetythierry, westonruter.
Fixes #51511.


git-svn-id: https://develop.svn.wordpress.org/trunk@50078 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Felix Arntz 2021-01-29 20:36:03 +00:00
parent d6c7d0010b
commit 986ebd436e
3 changed files with 38 additions and 0 deletions
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1
src/wp-includes/default-filters.php
View File

@ -233,6 +233,7 @@ add_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
// Robots filters.
add_filter( 'wp_robots', 'wp_robots_noindex' );
add_filter( 'wp_robots', 'wp_robots_max_image_preview_large' );
// Mark site as no longer fresh.
foreach ( array( 'publish_post', 'publish_page', 'wp_ajax_save-widget', 'wp_ajax_widgets-order', 'customize_save_after' ) as $action ) {

22
src/wp-includes/robots-template.php
View File

@ -133,3 +133,25 @@ function wp_robots_sensitive_page( array $robots ) {
$robots['noarchive'] = true;
return $robots;
}
/**
* Adds 'max-image-preview:large' to the robots meta tag.
*
* This directive tells web robots that large image previews are allowed to be
* displayed, e.g. in search engines, unless the blog is marked as not being public.
*
* Typical usage is as a {@see 'wp_robots'} callback:
*
* add_filter( 'wp_robots', 'wp_robots_max_image_preview_large' );
*
* @since 5.7.0
*
* @param array $robots Associative array of robots directives.
* @return array Filtered robots directives.
*/
function wp_robots_max_image_preview_large( array $robots ) {
if ( get_option( 'blog_public' ) ) {
$robots['max-image-preview'] = 'large';
}
return $robots;
}

15
tests/phpunit/tests/robots.php
View File

@ -161,6 +161,21 @@ class Tests_Robots extends WP_UnitTestCase {
$this->assertContains( "'noindex, noarchive'", $output );
}
/**
* @ticket 51511
*/
public function test_wp_robots_max_image_preview_large() {
add_filter( 'wp_robots', 'wp_robots_max_image_preview_large' );
update_option( 'blog_public', '1' );
$output = get_echo( 'wp_robots' );
$this->assertContains( "'max-image-preview:large'", $output );
update_option( 'blog_public', '0' );
$output = get_echo( 'wp_robots' );
$this->assertEmpty( $output );
}
public function add_noindex_directive( array $robots ) {
$robots['noindex'] = true;
return $robots;