diff --git a/packages/block-library/src/post-excerpt/index.php b/packages/block-library/src/post-excerpt/index.php
index 4ed4edab95078..586c9bf85e9e1 100644
--- a/packages/block-library/src/post-excerpt/index.php
+++ b/packages/block-library/src/post-excerpt/index.php
@@ -18,6 +18,30 @@ function render_block_core_post_excerpt( $attributes, $content, $block ) {
return '';
}
+ /*
+ * We can use the excerpt block in query loops
+ * to render titleless posts.
+ * The behaviour of the block is that if there is no title
+ * just render whatever the 1st block in the post content is.
+ */
+
+ if ( $attributes['titleReplacement'] === true ) {
+ $post_id = $block->context['postId'];
+
+ // get the post title
+ $post_title = get_the_title( $post_id );
+
+ // if there is no title get the 1st block in the post content
+ if ( empty( $post_title ) ) {
+ $post = get_post( $post_id );
+ $post_blocks = parse_blocks( $post->post_content );
+ return sprintf( '
%2$s', get_permalink( $post_id ), $post_blocks[0]['innerHTML'] );
+ return ;
+ } else {
+ return false;
+ }
+ }
+
/*
* The purpose of the excerpt length setting is to limit the length of both
* automatically generated and user-created excerpts.