post-featured-image.php
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<?php
/**
* Server-side rendering of the `core/post-featured-image` block.
*
* @package WordPress
*/
/**
* Renders the `core/post-featured-image` 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 featured image for the current post.
*/
function render_block_core_post_featured_image( $attributes, $content, $block ) {
if ( ! isset( $block->context['postId'] ) ) {
return '';
}
$post_ID = $block->context['postId'];
$size_slug = isset( $attributes['sizeSlug'] ) ? $attributes['sizeSlug'] : 'post-thumbnail';
$post_title = trim( strip_tags( get_the_title( $post_ID ) ) );
$featured_image = get_the_post_thumbnail( $post_ID, $size_slug, array( 'alt' => $post_title ) );
if ( ! $featured_image ) {
return '';
}
$wrapper_attributes = get_block_wrapper_attributes();
if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {
$featured_image = sprintf( '<a href="%1s">%2s</a>', get_the_permalink( $post_ID ), $featured_image );
}
$has_width = ! empty( $attributes['width'] );
$has_height = ! empty( $attributes['height'] );
if ( ! $has_height && ! $has_width ) {
return "<figure $wrapper_attributes>$featured_image</figure>";
}
if ( $has_width ) {
$wrapper_attributes = get_block_wrapper_attributes( array( 'style' => "width:{$attributes['width']};" ) );
}
if ( $has_height ) {
$image_styles = "height:{$attributes['height']};";
if ( ! empty( $attributes['scale'] ) ) {
$image_styles .= "object-fit:{$attributes['scale']};";
}
$featured_image = str_replace( 'src=', 'style="' . esc_attr( $image_styles ) . '" src=', $featured_image );
}
return "<figure $wrapper_attributes>$featured_image</figure>";
}
/**
* Registers the `core/post-featured-image` block on the server.
*/
function register_block_core_post_featured_image() {
register_block_type_from_metadata(
__DIR__ . '/post-featured-image',
array(
'render_callback' => 'render_block_core_post_featured_image',
)
);
}
add_action( 'init', 'register_block_core_post_featured_image' );