WordPress/wp-includes/blocks/post-excerpt.php

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<?php
/**
* Server-side rendering of the `core/post-excerpt` block.
*
* @package WordPress
*/
/**
* Renders the `core/post-excerpt` block on the server.
*
* @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 '';
}
$more_text = isset( $attributes['moreText'] ) ? '<a class="wp-block-post-excerpt__more-link" href="' . esc_url( get_the_permalink( $block->context['postId'] ) ) . '">' . $attributes['moreText'] . '</a>' : '';
$filter_excerpt_length = function() use ( $attributes ) {
return isset( $attributes['wordCount'] ) ? $attributes['wordCount'] : 55;
};
add_filter(
'excerpt_length',
$filter_excerpt_length
);
$classes = '';
if ( isset( $attributes['textAlign'] ) ) {
$classes .= 'has-text-align-' . $attributes['textAlign'];
}
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) );
$content = '<p class="wp-block-post-excerpt__excerpt">' . get_the_excerpt( $block->context['postId'] );
if ( ! isset( $attributes['showMoreOnNewLine'] ) || $attributes['showMoreOnNewLine'] ) {
$content .= '</p><p class="wp-block-post-excerpt__more-text">' . $more_text . '</p>';
} else {
$content .= " $more_text</p>";
}
remove_filter(
'excerpt_length',
$filter_excerpt_length
);
return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $content );
}
/**
* Registers the `core/post-excerpt` block on the server.
*/
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' );