post-excerpt.php (2432B)
1 <?php 2 /** 3 * Server-side rendering of the `core/post-excerpt` block. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * Renders the `core/post-excerpt` block on the server. 10 * 11 * @param array $attributes Block attributes. 12 * @param string $content Block default content. 13 * @param WP_Block $block Block instance. 14 * @return string Returns the filtered post excerpt for the current post wrapped inside "p" tags. 15 */ 16 function render_block_core_post_excerpt( $attributes, $content, $block ) { 17 if ( ! isset( $block->context['postId'] ) ) { 18 return ''; 19 } 20 21 $more_text = ! empty( $attributes['moreText'] ) ? '<a class="wp-block-post-excerpt__more-link" href="' . esc_url( get_the_permalink( $block->context['postId'] ) ) . '">' . $attributes['moreText'] . '</a>' : ''; 22 $filter_excerpt_more = function( $more ) use ( $more_text ) { 23 return empty( $more_text ) ? $more : ''; 24 }; 25 /** 26 * Some themes might use `excerpt_more` filter to handle the 27 * `more` link displayed after a trimmed excerpt. Since the 28 * block has a `more text` attribute we have to check and 29 * override if needed the return value from this filter. 30 * So if the block's attribute is not empty override the 31 * `excerpt_more` filter and return nothing. This will 32 * result in showing only one `read more` link at a time. 33 */ 34 add_filter( 'excerpt_more', $filter_excerpt_more ); 35 $classes = ''; 36 if ( isset( $attributes['textAlign'] ) ) { 37 $classes .= "has-text-align-{$attributes['textAlign']}"; 38 } 39 $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) ); 40 41 $content = '<p class="wp-block-post-excerpt__excerpt">' . get_the_excerpt( $block->context['postId'] ); 42 $show_more_on_new_line = ! isset( $attributes['showMoreOnNewLine'] ) || $attributes['showMoreOnNewLine']; 43 if ( $show_more_on_new_line && ! empty( $more_text ) ) { 44 $content .= '</p><p class="wp-block-post-excerpt__more-text">' . $more_text . '</p>'; 45 } else { 46 $content .= " $more_text</p>"; 47 } 48 remove_filter( 'excerpt_more', $filter_excerpt_more ); 49 return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $content ); 50 } 51 52 /** 53 * Registers the `core/post-excerpt` block on the server. 54 */ 55 function register_block_core_post_excerpt() { 56 register_block_type_from_metadata( 57 __DIR__ . '/post-excerpt', 58 array( 59 'render_callback' => 'render_block_core_post_excerpt', 60 ) 61 ); 62 } 63 add_action( 'init', 'register_block_core_post_excerpt' );