public function postHistoryDiff(string $postID = '', string $leftUnique = '', string $rightUnique = '')
{
$postID = (int) $postID;
$blog = $this->blog->getBlogPostById($postID);
if (!$blog || !$this->can('read')) {
\Airship\redirect($this->airship_cabin_prefix . '/blog/post');
}
$left = $this->blog->getBlogPostVersionByUniqueId($leftUnique);
$right = $this->blog->getBlogPostVersionByUniqueId($rightUnique);
// Sanity check. If it fails, go back to the history list.
if ((int) $left['postid'] !== $postID || (int) $right['postid'] !== $postID) {
\Airship\redirect($this->airship_cabin_prefix . '/blog/post/history/' . $postID);
}
$this->lens('blog/post_history_diff', ['active_link' => 'bridge-link-blog-posts', 'blog' => $blog, 'left' => $left, 'right' => $right]);
}