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

   1  <?php
   2  /**
   3   * Server-side rendering of the `core/post-featured-image` block.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  /**
   9   * Renders the `core/post-featured-image` 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 featured image for the current post.
  15   */
  16  function render_block_core_post_featured_image( $attributes, $content, $block ) {
  17      if ( ! isset( $block->context['postId'] ) ) {
  18          return '';
  19      }
  20      $post_ID = $block->context['postId'];
  21  
  22      $size_slug      = isset( $attributes['sizeSlug'] ) ? $attributes['sizeSlug'] : 'post-thumbnail';
  23      $post_title     = trim( strip_tags( get_the_title( $post_ID ) ) );
  24      $featured_image = get_the_post_thumbnail( $post_ID, $size_slug, array( 'alt' => $post_title ) );
  25      if ( ! $featured_image ) {
  26          return '';
  27      }
  28      $wrapper_attributes = get_block_wrapper_attributes();
  29      if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {
  30          $featured_image = sprintf( '<a href="%1s">%2s</a>', get_the_permalink( $post_ID ), $featured_image );
  31      }
  32  
  33      $has_width  = ! empty( $attributes['width'] );
  34      $has_height = ! empty( $attributes['height'] );
  35      if ( ! $has_height && ! $has_width ) {
  36          return "<figure $wrapper_attributes>$featured_image</figure>";
  37      }
  38  
  39      if ( $has_width ) {
  40          $wrapper_attributes = get_block_wrapper_attributes( array( 'style' => "width:{$attributes['width']};" ) );
  41      }
  42  
  43      if ( $has_height ) {
  44          $image_styles = "height:{$attributes['height']};";
  45          if ( ! empty( $attributes['scale'] ) ) {
  46              $image_styles .= "object-fit:{$attributes['scale']};";
  47          }
  48          $featured_image = str_replace( 'src=', 'style="' . esc_attr( $image_styles ) . '" src=', $featured_image );
  49      }
  50  
  51      return "<figure $wrapper_attributes>$featured_image</figure>";
  52  }
  53  
  54  /**
  55   * Registers the `core/post-featured-image` block on the server.
  56   */
  57  function register_block_core_post_featured_image() {
  58      register_block_type_from_metadata(
  59          __DIR__ . '/post-featured-image',
  60          array(
  61              'render_callback' => 'render_block_core_post_featured_image',
  62          )
  63      );
  64  }
  65  add_action( 'init', 'register_block_core_post_featured_image' );


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