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   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   */
  18  function 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      $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => 'entry-content' ) );
  58  
  59      return (
  60          '<div ' . $wrapper_attributes . '>' .
  61              $content .
  62          '</div>'
  63      );
  64  }
  65  
  66  /**
  67   * Registers the `core/post-content` block on the server.
  68   *
  69   * @since 5.8.0
  70   */
  71  function register_block_core_post_content() {
  72      register_block_type_from_metadata(
  73          __DIR__ . '/post-content',
  74          array(
  75              'render_callback' => 'render_block_core_post_content',
  76          )
  77      );
  78  }
  79  add_action( 'init', 'register_block_core_post_content' );