diff options
Diffstat (limited to 'plugins/jetpack/class.jetpack-twitter-cards.php')
| -rw-r--r-- | plugins/jetpack/class.jetpack-twitter-cards.php | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/plugins/jetpack/class.jetpack-twitter-cards.php b/plugins/jetpack/class.jetpack-twitter-cards.php index 1cb5bcf3..63d19917 100644 --- a/plugins/jetpack/class.jetpack-twitter-cards.php +++ b/plugins/jetpack/class.jetpack-twitter-cards.php @@ -13,6 +13,13 @@ class Jetpack_Twitter_Cards { static function twitter_cards_tags( $og_tags ) { global $post; + /** + * Maximum alt text length. + * + * @see https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/summary-card-with-large-image.html + */ + $alt_length = 420; + if ( post_password_required() ) { return $og_tags; } @@ -84,6 +91,16 @@ class Jetpack_Twitter_Cards { } else { $og_tags['twitter:image'] = esc_url( add_query_arg( 'w', 240, $featured[0]['src'] ) ); } + + // Add the alt tag if we have one. + if ( ! empty( $featured[0]['alt_text'] ) ) { + // Shorten it if it is too long. + if ( strlen( $featured[0]['alt_text'] ) > $alt_length ) { + $og_tags['twitter:image:alt'] = esc_attr( mb_substr( $featured[0]['alt_text'], 0, $alt_length ) . '…' ); + } else { + $og_tags['twitter:image:alt'] = esc_attr( $featured[0]['alt_text'] ); + } + } } } @@ -174,7 +191,7 @@ class Jetpack_Twitter_Cards { } // Third fall back, Site Icon - if ( empty( $og_tags['twitter:image'] ) && ( function_exists( 'has_site_icon' ) && has_site_icon() ) ) { + if ( empty( $og_tags['twitter:image'] ) && has_site_icon() ) { $og_tags['twitter:image'] = get_site_icon_url( '240' ); } |