WordPress Version: 6.4
/**
* Renders the `core/post-template` block on the server.
*
* @since 6.3.0 Changed render_block_context priority to `1`.
*
* @param array $attributes Block attributes.
* @param string $content Block default content.
* @param WP_Block $block Block instance.
*
* @return string Returns the output of the query, structured using the layout defined by the block's inner blocks.
*/
function render_block_core_post_template($attributes, $content, $block)
{
$page_key = isset($block->context['queryId']) ? 'query-' . $block->context['queryId'] . '-page' : 'query-page';
$enhanced_pagination = isset($block->context['enhancedPagination']) && $block->context['enhancedPagination'];
$page = empty($_GET[$page_key]) ? 1 : (int) $_GET[$page_key];
// Use global query if needed.
$use_global_query = isset($block->context['query']['inherit']) && $block->context['query']['inherit'];
if ($use_global_query) {
global $wp_query;
/*
* If already in the main query loop, duplicate the query instance to not tamper with the main instance.
* Since this is a nested query, it should start at the beginning, therefore rewind posts.
* Otherwise, the main query loop has not started yet and this block is responsible for doing so.
*/
if (in_the_loop()) {
$query = clone $wp_query;
$query->rewind_posts();
} else {
$query = $wp_query;
}
} else {
$query_args = build_query_vars_from_query_block($block, $page);
$query = new WP_Query($query_args);
}
if (!$query->have_posts()) {
return '';
}
if (block_core_post_template_uses_featured_image($block->inner_blocks)) {
update_post_thumbnail_cache($query);
}
$classnames = '';
if (isset($block->context['displayLayout']) && isset($block->context['query'])) {
if (isset($block->context['displayLayout']['type']) && 'flex' === $block->context['displayLayout']['type']) {
$classnames = "is-flex-container columns-{$block->context['displayLayout']['columns']}";
}
}
if (isset($attributes['style']['elements']['link']['color']['text'])) {
$classnames .= ' has-link-color';
}
// Ensure backwards compatibility by flagging the number of columns via classname when using grid layout.
if (isset($attributes['layout']['type']) && 'grid' === $attributes['layout']['type'] && !empty($attributes['layout']['columnCount'])) {
$classnames .= ' ' . sanitize_title('columns-' . $attributes['layout']['columnCount']);
}
$wrapper_attributes = get_block_wrapper_attributes(array('class' => trim($classnames)));
$content = '';
while ($query->have_posts()) {
$query->the_post();
// Get an instance of the current Post Template block.
$block_instance = $block->parsed_block;
// Set the block name to one that does not correspond to an existing registered block.
// This ensures that for the inner instances of the Post Template block, we do not render any block supports.
$block_instance['blockName'] = 'core/null';
$post_id = get_the_ID();
$post_type = get_post_type();
$filter_block_context = static function ($context) use ($post_id, $post_type) {
$context['postType'] = $post_type;
$context['postId'] = $post_id;
return $context;
};
// Use an early priority to so that other 'render_block_context' filters have access to the values.
add_filter('render_block_context', $filter_block_context, 1);
// Render the inner blocks of the Post Template block with `dynamic` set to `false` to prevent calling
// `render_callback` and ensure that no wrapper markup is included.
$block_content = (new WP_Block($block_instance))->render(array('dynamic' => false));
remove_filter('render_block_context', $filter_block_context, 1);
// Wrap the render inner blocks in a `li` element with the appropriate post classes.
$post_classes = implode(' ', get_post_class('wp-block-post'));
$inner_block_directives = $enhanced_pagination ? ' data-wp-key="post-template-item-' . $post_id . '"' : '';
$content .= '<li' . $inner_block_directives . ' class="' . esc_attr($post_classes) . '">' . $block_content . '</li>';
}
/*
* Use this function to restore the context of the template tags
* from a secondary query loop back to the main query loop.
* Since we use two custom loops, it's safest to always restore.
*/
wp_reset_postdata();
return sprintf('<ul %1$s>%2$s</ul>', $wrapper_attributes, $content);
}