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Editing: comments.php
<?php /** * Server-side rendering of the `core/comments` block. * * @package WordPress */ /** * Renders the `core/comments` block on the server. * * This render callback is mainly for rendering a dynamic, legacy version of * this block (the old `core/post-comments`). It uses the `comments_template()` * function to generate the output, in the same way as classic PHP themes. * * As this callback will always run during SSR, first we need to check whether * the block is in legacy mode. If not, the HTML generated in the editor is * returned instead. * * @since 6.1.0 * * @global WP_Post $post Global post object. * * @param array $attributes Block attributes. * @param string $content Block default content. * @param WP_Block $block Block instance. * @return string Returns the filtered post comments for the current post wrapped inside "p" tags. */ function render_block_core_comments( $attributes, $content, $block ) { global $post; if ( ! isset( $block->context['postId'] ) ) { return ''; } $post_id = $block->context['postId']; // Return early if there are no comments and comments are closed. if ( ! comments_open( $post_id ) && (int) get_comments_number( $post_id ) === 0 ) { return ''; } // If this isn't the legacy block, we need to render the static version of this block. $is_legacy = 'core/post-comments' === $block->name || ! empty( $attributes['legacy'] ); if ( ! $is_legacy ) { return $block->render( array( 'dynamic' => false ) ); } $post_before = $post; $post = get_post( $post_id ); setup_postdata( $post ); ob_start(); /* * There's a deprecation warning generated by WP Core. * Ideally this deprecation is removed from Core. * In the meantime, this removes it from the output. */ add_filter( 'deprecated_file_trigger_error', '__return_false' ); comments_template(); remove_filter( 'deprecated_file_trigger_error', '__return_false' ); $output = ob_get_clean(); $post = $post_before; $classnames = array(); // Adds the old class name for styles' backwards compatibility. if ( isset( $attributes['legacy'] ) ) { $classnames[] = 'wp-block-post-comments'; } if ( isset( $attributes['textAlign'] ) ) { $classnames[] = 'has-text-align-' . $attributes['textAlign']; } $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classnames ) ) ); /* * Enqueues scripts and styles required only for the legacy version. That is * why they are not defined in `block.json`. */ wp_enqueue_script( 'comment-reply' ); enqueue_legacy_post_comments_block_styles( $block->name ); return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $output ); } /** * Registers the `core/comments` block on the server. * * @since 6.1.0 */ function register_block_core_comments() { register_block_type_from_metadata( __DIR__ . '/comments', array( 'render_callback' => 'render_block_core_comments', 'skip_inner_blocks' => true, ) ); } add_action( 'init', 'register_block_core_comments' ); /** * Use the button block classes for the form-submit button. * * @since 6.1.0 * * @param array $fields The default comment form arguments. * * @return array Returns the modified fields. */ function comments_block_form_defaults( $fields ) { if ( wp_is_block_theme() ) { $fields['submit_button'] = '<input name="%1$s" type="submit" id="%2$s" class="%3$s wp-block-button__link ' . wp_theme_get_element_class_name( 'button' ) . '" value="%4$s" />'; $fields['submit_field'] = '<p class="form-submit wp-block-button">%1$s %2$s</p>'; } return $fields; } add_filter( 'comment_form_defaults', 'comments_block_form_defaults' ); /** * Enqueues styles from the legacy `core/post-comments` block. These styles are * required only by the block's fallback. * * @since 6.1.0 * * @param string $block_name Name of the new block type. */ function enqueue_legacy_post_comments_block_styles( $block_name ) { static $are_styles_enqueued = false; if ( ! $are_styles_enqueued ) { $handles = array( 'wp-block-post-comments', 'wp-block-buttons', 'wp-block-button', ); foreach ( $handles as $handle ) { wp_enqueue_block_style( $block_name, array( 'handle' => $handle ) ); } $are_styles_enqueued = true; } } /** * Ensures backwards compatibility for any users running the Gutenberg plugin * who have used Post Comments before it was merged into Comments Query Loop. * * The same approach was followed when core/query-loop was renamed to * core/post-template. * * @since 6.1.0 * * @see https://github.com/WordPress/gutenberg/pull/41807 * @see https://github.com/WordPress/gutenberg/pull/32514 */ function register_legacy_post_comments_block() { $registry = WP_Block_Type_Registry::get_instance(); /* * Remove the old `post-comments` block if it was already registered, as it * is about to be replaced by the type defined below. */ if ( $registry->is_registered( 'core/post-comments' ) ) { unregister_block_type( 'core/post-comments' ); } // Recreate the legacy block metadata. $metadata = array( 'name' => 'core/post-comments', 'category' => 'theme', 'attributes' => array( 'textAlign' => array( 'type' => 'string', ), ), 'uses_context' => array( 'postId', 'postType', ), 'supports' => array( 'html' => false, 'align' => array( 'wide', 'full' ), 'typography' => array( 'fontSize' => true, 'lineHeight' => true, '__experimentalFontStyle' => true, '__experimentalFontWeight' => true, '__experimentalLetterSpacing' => true, '__experimentalTextTransform' => true, '__experimentalDefaultControls' => array( 'fontSize' => true, ), ), 'color' => array( 'gradients' => true, 'link' => true, '__experimentalDefaultControls' => array( 'background' => true, 'text' => true, ), ), 'inserter' => false, ), 'style' => array( 'wp-block-post-comments', 'wp-block-buttons', 'wp-block-button', ), 'render_callback' => 'render_block_core_comments', 'skip_inner_blocks' => true, ); /* * Filters the metadata object, the same way it's done inside * `register_block_type_from_metadata()`. This applies some default filters, * like `_wp_multiple_block_styles`, which is required in this case because * the block has multiple styles. */ /** This filter is documented in wp-includes/blocks.php */ $metadata = apply_filters( 'block_type_metadata', $metadata ); register_block_type( 'core/post-comments', $metadata ); } add_action( 'init', 'register_legacy_post_comments_block', 21 );
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