rss.php (3246B)
1 <?php 2 /** 3 * Server-side rendering of the `core/rss` block. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * Renders the `core/rss` block on server. 10 * 11 * @param array $attributes The block attributes. 12 * 13 * @return string Returns the block content with received rss items. 14 */ 15 function render_block_core_rss( $attributes ) { 16 $rss = fetch_feed( $attributes['feedURL'] ); 17 18 if ( is_wp_error( $rss ) ) { 19 return '<div class="components-placeholder"><div class="notice notice-error"><strong>' . __( 'RSS Error:' ) . '</strong> ' . $rss->get_error_message() . '</div></div>'; 20 } 21 22 if ( ! $rss->get_item_quantity() ) { 23 return '<div class="components-placeholder"><div class="notice notice-error">' . __( 'An error has occurred, which probably means the feed is down. Try again later.' ) . '</div></div>'; 24 } 25 26 $rss_items = $rss->get_items( 0, $attributes['itemsToShow'] ); 27 $list_items = ''; 28 foreach ( $rss_items as $item ) { 29 $title = esc_html( trim( strip_tags( $item->get_title() ) ) ); 30 if ( empty( $title ) ) { 31 $title = __( '(no title)' ); 32 } 33 $link = $item->get_link(); 34 $link = esc_url( $link ); 35 if ( $link ) { 36 $title = "<a href='{$link}'>{$title}</a>"; 37 } 38 $title = "<div class='wp-block-rss__item-title'>{$title}</div>"; 39 40 $date = ''; 41 if ( $attributes['displayDate'] ) { 42 $date = $item->get_date( 'U' ); 43 44 if ( $date ) { 45 $date = sprintf( 46 '<time datetime="%1$s" class="wp-block-rss__item-publish-date">%2$s</time> ', 47 date_i18n( get_option( 'c' ), $date ), 48 date_i18n( get_option( 'date_format' ), $date ) 49 ); 50 } 51 } 52 53 $author = ''; 54 if ( $attributes['displayAuthor'] ) { 55 $author = $item->get_author(); 56 if ( is_object( $author ) ) { 57 $author = $author->get_name(); 58 $author = '<span class="wp-block-rss__item-author">' . sprintf( 59 /* translators: %s: the author. */ 60 __( 'by %s' ), 61 esc_html( strip_tags( $author ) ) 62 ) . '</span>'; 63 } 64 } 65 66 $excerpt = ''; 67 if ( $attributes['displayExcerpt'] ) { 68 $excerpt = html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) ); 69 $excerpt = esc_attr( wp_trim_words( $excerpt, $attributes['excerptLength'], ' […]' ) ); 70 71 // Change existing [...] to […]. 72 if ( '[...]' === substr( $excerpt, -5 ) ) { 73 $excerpt = substr( $excerpt, 0, -5 ) . '[…]'; 74 } 75 76 $excerpt = '<div class="wp-block-rss__item-excerpt">' . esc_html( $excerpt ) . '</div>'; 77 } 78 79 $list_items .= "<li class='wp-block-rss__item'>{$title}{$date}{$author}{$excerpt}</li>"; 80 } 81 82 $classnames = array(); 83 if ( isset( $attributes['blockLayout'] ) && 'grid' === $attributes['blockLayout'] ) { 84 $classnames[] = 'is-grid'; 85 } 86 87 if ( isset( $attributes['columns'] ) && 'grid' === $attributes['blockLayout'] ) { 88 $classnames[] = 'columns-' . $attributes['columns']; 89 } 90 $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classnames ) ) ); 91 92 return sprintf( '<ul %s>%s</ul>', $wrapper_attributes, $list_items ); 93 } 94 95 /** 96 * Registers the `core/rss` block on server. 97 */ 98 function register_block_core_rss() { 99 register_block_type_from_metadata( 100 __DIR__ . '/rss', 101 array( 102 'render_callback' => 'render_block_core_rss', 103 ) 104 ); 105 } 106 add_action( 'init', 'register_block_core_rss' );