1<?php
  2/**
  3 * Server-side rendering of the `core/post-content` block.
  4 *
  5 * @package WordPress
  6 */
  7
  8/**
  9 * Renders the `core/post-content` block on the server.
 10 *
 11 * @since 5.8.0
 12 *
 13 * @param array    $attributes Block attributes.
 14 * @param string   $content    Block default content.
 15 * @param WP_Block $block      Block instance.
 16 * @return string Returns the filtered post content of the current post.
 17 */
 18function render_block_core_post_content( $attributes, $content, $block ) {
 19	static $seen_ids = array();
 20
 21	if ( ! isset( $block->context['postId'] ) ) {
 22		return '';
 23	}
 24
 25	$post_id = $block->context['postId'];
 26
 27	if ( isset( $seen_ids[ $post_id ] ) ) {
 28		// WP_DEBUG_DISPLAY must only be honored when WP_DEBUG. This precedent
 29		// is set in `wp_debug_mode()`.
 30		$is_debug = WP_DEBUG && WP_DEBUG_DISPLAY;
 31
 32		return $is_debug ?
 33			// translators: Visible only in the front end, this warning takes the place of a faulty block.
 34			__( '[block rendering halted]' ) :
 35			'';
 36	}
 37
 38	$seen_ids[ $post_id ] = true;
 39
 40	// When inside the main loop, we want to use queried object
 41	// so that `the_preview` for the current post can apply.
 42	// We force this behavior by omitting the third argument (post ID) from the `get_the_content`.
 43	$content = get_the_content();
 44	// Check for nextpage to display page links for paginated posts.
 45	if ( has_block( 'core/nextpage' ) ) {
 46		$content .= wp_link_pages( array( 'echo' => 0 ) );
 47	}
 48
 49	/** This filter is documented in wp-includes/post-template.php */
 50	$content = apply_filters( 'the_content', str_replace( ']]>', ']]&gt;', $content ) );
 51	unset( $seen_ids[ $post_id ] );
 52
 53	if ( empty( $content ) ) {
 54		return '';
 55	}
 56
 57	$tag_name = 'div';
 58
 59	if ( ! empty( $attributes['tagName'] ) && tag_escape( $attributes['tagName'] ) === $attributes['tagName'] ) {
 60		$tag_name = $attributes['tagName'];
 61	}
 62
 63	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => 'entry-content' ) );
 64
 65	return sprintf(
 66		'<%1$s %2$s>%3$s</%1$s>',
 67		$tag_name,
 68		$wrapper_attributes,
 69		$content
 70	);
 71}
 72
 73/**
 74 * Registers the `core/post-content` block on the server.
 75 *
 76 * @since 5.8.0
 77 */
 78function register_block_core_post_content() {
 79	register_block_type_from_metadata(
 80		__DIR__ . '/post-content',
 81		array(
 82			'render_callback' => 'render_block_core_post_content',
 83		)
 84	);
 85}
 86add_action( 'init', 'register_block_core_post_content' );
 87