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<?php |
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/** |
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* Server-side rendering of the `core/post-excerpt` block. |
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* |
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* @package WordPress |
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*/ |
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|
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/** |
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* Renders the `core/post-excerpt` block on the server. |
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* |
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* @param array $attributes Block attributes. |
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* @param string $content Block default content. |
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* @param WP_Block $block Block instance. |
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* @return string Returns the filtered post excerpt for the current post wrapped inside "p" tags. |
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*/ |
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function gutenberg_render_block_core_post_excerpt( $attributes, $content, $block ) { |
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if ( ! isset( $block->context['postId'] ) ) { |
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return ''; |
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} |
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|
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$excerpt = get_the_excerpt( $block->context['postId'] ); |
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|
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if ( empty( $excerpt ) ) { |
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return ''; |
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} |
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|
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$more_text = ! empty( $attributes['moreText'] ) ? '<a class="wp-block-post-excerpt__more-link" href="' . esc_url( get_the_permalink( $block->context['postId'] ) ) . '">' . $attributes['moreText'] . '</a>' : ''; |
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$filter_excerpt_more = function( $more ) use ( $more_text ) { |
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return empty( $more_text ) ? $more : ''; |
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}; |
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/** |
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* Some themes might use `excerpt_more` filter to handle the |
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* `more` link displayed after a trimmed excerpt. Since the |
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* block has a `more text` attribute we have to check and |
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* override if needed the return value from this filter. |
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* So if the block's attribute is not empty override the |
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* `excerpt_more` filter and return nothing. This will |
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* result in showing only one `read more` link at a time. |
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*/ |
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add_filter( 'excerpt_more', $filter_excerpt_more ); |
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$classes = ''; |
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if ( isset( $attributes['textAlign'] ) ) { |
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$classes .= "has-text-align-{$attributes['textAlign']}"; |
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} |
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$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) ); |
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|
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$content = '<p class="wp-block-post-excerpt__excerpt">' . $excerpt; |
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$show_more_on_new_line = ! isset( $attributes['showMoreOnNewLine'] ) || $attributes['showMoreOnNewLine']; |
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if ( $show_more_on_new_line && ! empty( $more_text ) ) { |
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$content .= '</p><p class="wp-block-post-excerpt__more-text">' . $more_text . '</p>'; |
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} else { |
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$content .= " $more_text</p>"; |
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} |
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remove_filter( 'excerpt_more', $filter_excerpt_more ); |
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return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $content ); |
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} |
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|
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/** |
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* Registers the `core/post-excerpt` block on the server. |
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*/ |
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function gutenberg_register_block_core_post_excerpt() { |
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register_block_type_from_metadata( |
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__DIR__ . '/post-excerpt', |
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array( |
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'render_callback' => 'gutenberg_render_block_core_post_excerpt', |
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) |
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); |
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} |
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add_action( 'init', 'gutenberg_register_block_core_post_excerpt', 20 ); |
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|
