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/wp-includes/blocks/ -> post-excerpt.php (source)

   1  <?php
   2  /**
   3   * Server-side rendering of the `core/post-excerpt` block.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  /**
   9   * Renders the `core/post-excerpt` block on the server.
  10   *
  11   * @param array    $attributes Block attributes.
  12   * @param string   $content    Block default content.
  13   * @param WP_Block $block      Block instance.
  14   * @return string Returns the filtered post excerpt for the current post wrapped inside "p" tags.
  15   */
  16  function render_block_core_post_excerpt( $attributes, $content, $block ) {
  17      if ( ! isset( $block->context['postId'] ) ) {
  18          return '';
  19      }
  20  
  21      $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>' : '';
  22      $filter_excerpt_more = function( $more ) use ( $more_text ) {
  23          return empty( $more_text ) ? $more : '';
  24      };
  25      /**
  26       * Some themes might use `excerpt_more` filter to handle the
  27       * `more` link displayed after a trimmed excerpt. Since the
  28       * block has a `more text` attribute we have to check and
  29       * override if needed the return value from this filter.
  30       * So if the block's attribute is not empty override the
  31       * `excerpt_more` filter and return nothing. This will
  32       * result in showing only one `read more` link at a time.
  33       */
  34      add_filter( 'excerpt_more', $filter_excerpt_more );
  35      $classes = '';
  36      if ( isset( $attributes['textAlign'] ) ) {
  37          $classes .= "has-text-align-{$attributes['textAlign']}";
  38      }
  39      $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) );
  40  
  41      $content               = '<p class="wp-block-post-excerpt__excerpt">' . get_the_excerpt( $block->context['postId'] );
  42      $show_more_on_new_line = ! isset( $attributes['showMoreOnNewLine'] ) || $attributes['showMoreOnNewLine'];
  43      if ( $show_more_on_new_line && ! empty( $more_text ) ) {
  44          $content .= '</p><p class="wp-block-post-excerpt__more-text">' . $more_text . '</p>';
  45      } else {
  46          $content .= " $more_text</p>";
  47      }
  48      remove_filter( 'excerpt_more', $filter_excerpt_more );
  49      return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $content );
  50  }
  51  
  52  /**
  53   * Registers the `core/post-excerpt` block on the server.
  54   */
  55  function register_block_core_post_excerpt() {
  56      register_block_type_from_metadata(
  57          __DIR__ . '/post-excerpt',
  58          array(
  59              'render_callback' => 'render_block_core_post_excerpt',
  60          )
  61      );
  62  }
  63  add_action( 'init', 'register_block_core_post_excerpt' );


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