name : post-excerpt.php <?php /** * Server-side rendering of the `core/post-excerpt` block. * * @package WordPress */ /** * Renders the `core/post-excerpt` block on the server. * * @since 5.8.0 * * @param array $attributes Block attributes. * @param string $content Block default content. * @param WP_Block $block Block instance. * @return string Returns the filtered post excerpt for the current post wrapped inside "p" tags. */ function render_block_core_post_excerpt( $attributes, $content, $block ) { if ( ! isset( $block->context['postId'] ) ) { return ''; } /* * The purpose of the excerpt length setting is to limit the length of both * automatically generated and user-created excerpts. * Because the excerpt_length filter only applies to auto generated excerpts, * wp_trim_words is used instead. */ $excerpt_length = $attributes['excerptLength']; $excerpt = get_the_excerpt( $block->context['postId'] ); if ( isset( $excerpt_length ) ) { $excerpt = wp_trim_words( $excerpt, $excerpt_length ); } $more_text = ! empty( $attributes['moreText'] ) ? '<a class="wp-block-post-excerpt__more-link" href="' . esc_url( get_the_permalink( $block->context['postId'] ) ) . '">' . wp_kses_post( $attributes['moreText'] ) . '</a>' : ''; $filter_excerpt_more = static function ( $more ) use ( $more_text ) { return empty( $more_text ) ? $more : ''; }; /** * Some themes might use `excerpt_more` filter to handle the * `more` link displayed after a trimmed excerpt. Since the * block has a `more text` attribute we have to check and * override if needed the return value from this filter. * So if the block's attribute is not empty override the * `excerpt_more` filter and return nothing. This will * result in showing only one `read more` link at a time. */ add_filter( 'excerpt_more', $filter_excerpt_more ); $classes = array(); if ( isset( $attributes['textAlign'] ) ) { $classes[] = 'has-text-align-' . $attributes['textAlign']; } if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) { $classes[] = 'has-link-color'; } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) ); $content = '<p class="wp-block-post-excerpt__excerpt">' . $excerpt; $show_more_on_new_line = ! isset( $attributes['showMoreOnNewLine'] ) || $attributes['showMoreOnNewLine']; if ( $show_more_on_new_line && ! empty( $more_text ) ) { $content .= '</p><p class="wp-block-post-excerpt__more-text">' . $more_text . '</p>'; } else { $content .= " $more_text</p>"; } remove_filter( 'excerpt_more', $filter_excerpt_more ); return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $content ); } /** * Registers the `core/post-excerpt` block on the server. * * @since 5.8.0 */ function register_block_core_post_excerpt() { register_block_type_from_metadata( __DIR__ . '/post-excerpt', array( 'render_callback' => 'render_block_core_post_excerpt', ) ); } add_action( 'init', 'register_block_core_post_excerpt' ); /** * If themes or plugins filter the excerpt_length, we need to * override the filter in the editor, otherwise * the excerpt length block setting has no effect. * Returns 100 because 100 is the max length in the setting. */ if ( is_admin() || defined( 'REST_REQUEST' ) && REST_REQUEST ) { add_filter( 'excerpt_length', static function () { return 100; }, PHP_INT_MAX ); }