post-comments.php
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<?php
/**
* Server-side rendering of the `core/post-comments` block.
*
* @package WordPress
*/
/**
* Renders the `core/post-comments` 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 filtered post comments for the current post wrapped inside "p" tags.
*/
function render_block_core_post_comments( $attributes, $content, $block ) {
global $post;
$post_id = $block->context['postId'];
if ( ! isset( $post_id ) ) {
return '';
}
$comment_args = array(
'post_id' => $post_id,
'count' => true,
);
// Return early if there are no comments and comments are closed.
if ( ! comments_open( $post_id ) && get_comments( $comment_args ) === 0 ) {
return '';
}
$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' );
$post = $post_before;
$classes = '';
if ( isset( $attributes['textAlign'] ) ) {
$classes .= 'has-text-align-' . $attributes['textAlign'];
}
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) );
$output = ob_get_clean();
return sprintf( '<div %1$s>%2$s</div>', $wrapper_attributes, $output );
}
/**
* Registers the `core/post-comments` block on the server.
*/
function register_block_core_post_comments() {
register_block_type_from_metadata(
__DIR__ . '/post-comments',
array(
'render_callback' => 'render_block_core_post_comments',
)
);
}
add_action( 'init', 'register_block_core_post_comments' );
/**
* Use the button block classes for the form-submit button.
*
* @param array $fields The default comment form arguments.
*
* @return array Returns the modified fields.
*/
function post_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" 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', 'post_comments_block_form_defaults' );