96 lines
3.3 KiB
PHP
96 lines
3.3 KiB
PHP
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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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* 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 render_block_core_post_excerpt( $attributes, $content, $block ) {
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if ( ! isset( $block->context['postId'] ) ) {
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return '';
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}
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/*
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* The purpose of the excerpt length setting is to limit the length of both
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* automatically generated and user-created excerpts.
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* Because the excerpt_length filter only applies to auto generated excerpts,
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* wp_trim_words is used instead.
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*/
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$excerpt_length = $attributes['excerptLength'];
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$excerpt = get_the_excerpt( $block->context['postId'] );
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if ( isset( $excerpt_length ) ) {
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$excerpt = wp_trim_words( $excerpt, $excerpt_length );
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}
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$more_text = ! empty( $attributes['moreText'] ) ? '<a class="wp-block-post-excerpt__more-link" href="' . esc_url( get_the_permalink( $block->context['postId'] ) ) . '">' . wp_kses_post( $attributes['moreText'] ) . '</a>' : '';
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$filter_excerpt_more = static 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 = array();
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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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if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
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$classes[] = 'has-link-color';
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}
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$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );
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$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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* Registers the `core/post-excerpt` block on the server.
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*/
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function 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' => 'render_block_core_post_excerpt',
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)
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);
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}
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add_action( 'init', 'register_block_core_post_excerpt' );
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/**
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* If themes or plugins filter the excerpt_length, we need to
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* override the filter in the editor, otherwise
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* the excerpt length block setting has no effect.
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* Returns 100 because 100 is the max length in the setting.
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*/
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if ( is_admin() ||
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defined( 'REST_REQUEST' ) && REST_REQUEST ) {
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add_filter(
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'excerpt_length',
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static function () {
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return 100;
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},
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PHP_INT_MAX
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);
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}
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