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Editing: rss.php
<?php /** * Server-side rendering of the `core/rss` block. * * @package WordPress */ /** * Renders the `core/rss` block on server. * * @since 5.2.0 * * @param array $attributes The block attributes. * * @return string Returns the block content with received rss items. */ function render_block_core_rss( $attributes ) { if ( in_array( untrailingslashit( $attributes['feedURL'] ), array( site_url(), home_url() ), true ) ) { return '<div class="components-placeholder"><div class="notice notice-error">' . __( 'Adding an RSS feed to this siteās homepage is not supported, as it could lead to a loop that slows down your site. Try using another block, like the <strong>Latest Posts</strong> block, to list posts from the site.' ) . '</div></div>'; } $rss = fetch_feed( $attributes['feedURL'] ); if ( is_wp_error( $rss ) ) { return '<div class="components-placeholder"><div class="notice notice-error"><strong>' . __( 'RSS Error:' ) . '</strong> ' . esc_html( $rss->get_error_message() ) . '</div></div>'; } if ( ! $rss->get_item_quantity() ) { 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>'; } $rss_items = $rss->get_items( 0, $attributes['itemsToShow'] ); $list_items = ''; $open_in_new_tab = ! empty( $attributes['openInNewTab'] ); $rel = ! empty( $attributes['rel'] ) ? trim( $attributes['rel'] ) : ''; $link_attributes = ''; if ( $open_in_new_tab ) { $link_attributes .= ' target="_blank"'; } if ( '' !== $rel ) { $link_attributes .= ' rel="' . esc_attr( $rel ) . '"'; } foreach ( $rss_items as $item ) { $title = esc_html( trim( strip_tags( html_entity_decode( $item->get_title() ) ) ) ); if ( empty( $title ) ) { $title = __( '(no title)' ); } $link = $item->get_link(); $link = esc_url( $link ); if ( $link ) { $title = "<a href='{$link}'{$link_attributes}>{$title}</a>"; } $title = "<div class='wp-block-rss__item-title'>{$title}</div>"; $date_markup = ''; if ( ! empty( $attributes['displayDate'] ) ) { $timestamp = $item->get_date( 'U' ); if ( $timestamp ) { $gmt_offset = get_option( 'gmt_offset' ); $timestamp += (int) ( (float) $gmt_offset * HOUR_IN_SECONDS ); $date_markup = sprintf( '<time datetime="%1$s" class="wp-block-rss__item-publish-date">%2$s</time> ', esc_attr( date_i18n( 'c', $timestamp ) ), esc_html( date_i18n( get_option( 'date_format' ), $timestamp ) ) ); } } $author = ''; if ( $attributes['displayAuthor'] ) { $author = $item->get_author(); if ( is_object( $author ) ) { $author = $author->get_name(); if ( ! empty( $author ) ) { $author = '<span class="wp-block-rss__item-author">' . sprintf( /* translators: byline. %s: author. */ __( 'by %s' ), esc_html( strip_tags( $author ) ) ) . '</span>'; } } } $excerpt = ''; $description = $item->get_description(); if ( $attributes['displayExcerpt'] && ! empty( $description ) ) { $excerpt = html_entity_decode( $description, ENT_QUOTES, get_option( 'blog_charset' ) ); $excerpt = esc_attr( wp_trim_words( $excerpt, $attributes['excerptLength'], ' […]' ) ); // Change existing [...] to […]. if ( '[...]' === substr( $excerpt, -5 ) ) { $excerpt = substr( $excerpt, 0, -5 ) . '[…]'; } $excerpt = '<div class="wp-block-rss__item-excerpt">' . esc_html( $excerpt ) . '</div>'; } $list_items .= "<li class='wp-block-rss__item'>{$title}{$date_markup}{$author}{$excerpt}</li>"; } $classnames = array(); if ( isset( $attributes['blockLayout'] ) && 'grid' === $attributes['blockLayout'] ) { $classnames[] = 'is-grid'; } if ( isset( $attributes['columns'] ) && 'grid' === $attributes['blockLayout'] ) { $classnames[] = 'columns-' . $attributes['columns']; } if ( $attributes['displayDate'] ) { $classnames[] = 'has-dates'; } if ( $attributes['displayAuthor'] ) { $classnames[] = 'has-authors'; } if ( $attributes['displayExcerpt'] ) { $classnames[] = 'has-excerpts'; } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classnames ) ) ); return sprintf( '<ul %s>%s</ul>', $wrapper_attributes, $list_items ); } /** * Registers the `core/rss` block on server. * * @since 5.2.0 */ function register_block_core_rss() { register_block_type_from_metadata( __DIR__ . '/rss', array( 'render_callback' => 'render_block_core_rss', ) ); } add_action( 'init', 'register_block_core_rss' );
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