You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
160 lines
4.4 KiB
160 lines
4.4 KiB
<?php |
|
/** |
|
* Server-side rendering of the `core/rss` block. |
|
* |
|
* @package WordPress |
|
*/ |
|
|
|
/** |
|
* Renders the `core/rss` block on server. |
|
* |
|
* @param array $attributes The block attributes. |
|
* |
|
* @return string Returns the block content with received rss items. |
|
*/ |
|
function render_block_core_rss( $attributes ) { |
|
$rss = fetch_feed( $attributes['feedURL'] ); |
|
|
|
if ( is_wp_error( $rss ) ) { |
|
return '<div class="components-placeholder"><div class="notice notice-error"><strong>' . __( 'RSS Error:' ) . '</strong> ' . $rss->get_error_message() . '</div></div>'; |
|
} |
|
|
|
if ( ! $rss->get_item_quantity() ) { |
|
// PHP 5.2 compatibility. See: http://simplepie.org/wiki/faq/i_m_getting_memory_leaks. |
|
$rss->__destruct(); |
|
unset( $rss ); |
|
|
|
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 = ''; |
|
foreach ( $rss_items as $item ) { |
|
$title = esc_html( trim( strip_tags( $item->get_title() ) ) ); |
|
if ( empty( $title ) ) { |
|
$title = __( '(no title)' ); |
|
} |
|
$link = $item->get_link(); |
|
$link = esc_url( $link ); |
|
if ( $link ) { |
|
$title = "<a href='{$link}'>{$title}</a>"; |
|
} |
|
$title = "<div class='wp-block-rss__item-title'>{$title}</div>"; |
|
|
|
$date = ''; |
|
if ( $attributes['displayDate'] ) { |
|
$date = $item->get_date( 'U' ); |
|
|
|
if ( $date ) { |
|
$date = sprintf( |
|
'<time datetime="%1$s" class="wp-block-rss__item-publish-date">%2$s</time> ', |
|
date_i18n( get_option( 'c' ), $date ), |
|
date_i18n( get_option( 'date_format' ), $date ) |
|
); |
|
} |
|
} |
|
|
|
$author = ''; |
|
if ( $attributes['displayAuthor'] ) { |
|
$author = $item->get_author(); |
|
if ( is_object( $author ) ) { |
|
$author = $author->get_name(); |
|
$author = '<span class="wp-block-rss__item-author">' . __( 'by' ) . ' ' . esc_html( strip_tags( $author ) ) . '</span>'; |
|
} |
|
} |
|
|
|
$excerpt = ''; |
|
if ( $attributes['displayExcerpt'] ) { |
|
$excerpt = html_entity_decode( $item->get_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}{$date}{$author}{$excerpt}</li>"; |
|
} |
|
|
|
$class = 'wp-block-rss'; |
|
if ( isset( $attributes['align'] ) ) { |
|
$class .= ' align' . $attributes['align']; |
|
} |
|
|
|
if ( isset( $attributes['blockLayout'] ) && 'grid' === $attributes['blockLayout'] ) { |
|
$class .= ' is-grid'; |
|
} |
|
|
|
if ( isset( $attributes['columns'] ) && 'grid' === $attributes['blockLayout'] ) { |
|
$class .= ' columns-' . $attributes['columns']; |
|
} |
|
|
|
if ( isset( $attributes['className'] ) ) { |
|
$class .= ' ' . $attributes['className']; |
|
} |
|
|
|
$list_items_markup = "<ul class='{$class}'>{$list_items}</ul>"; |
|
|
|
// PHP 5.2 compatibility. See: http://simplepie.org/wiki/faq/i_m_getting_memory_leaks. |
|
$rss->__destruct(); |
|
unset( $rss ); |
|
|
|
return $list_items_markup; |
|
} |
|
|
|
/** |
|
* Registers the `core/rss` block on server. |
|
*/ |
|
function register_block_core_rss() { |
|
register_block_type( |
|
'core/rss', |
|
array( |
|
'attributes' => array( |
|
'align' => array( |
|
'type' => 'string', |
|
'enum' => array( 'left', 'center', 'right', 'wide', 'full' ), |
|
), |
|
'className' => array( |
|
'type' => 'string', |
|
), |
|
'columns' => array( |
|
'type' => 'number', |
|
'default' => 2, |
|
), |
|
'blockLayout' => array( |
|
'type' => 'string', |
|
'default' => 'list', |
|
), |
|
'feedURL' => array( |
|
'type' => 'string', |
|
'default' => '', |
|
), |
|
'itemsToShow' => array( |
|
'type' => 'number', |
|
'default' => 5, |
|
), |
|
'displayExcerpt' => array( |
|
'type' => 'boolean', |
|
'default' => false, |
|
), |
|
'displayAuthor' => array( |
|
'type' => 'boolean', |
|
'default' => false, |
|
), |
|
'displayDate' => array( |
|
'type' => 'boolean', |
|
'default' => false, |
|
), |
|
'excerptLength' => array( |
|
'type' => 'number', |
|
'default' => 55, |
|
), |
|
), |
|
'render_callback' => 'render_block_core_rss', |
|
) |
|
); |
|
} |
|
add_action( 'init', 'register_block_core_rss' );
|
|
|