When people view a post (Single), I want the sidebar can list out all related post link which in same category.
Post: A , B , C ,D
All set in ABC this category.
When people view A , the sidebar will list out the link with post title of A , B , C & D.
I know WP have provided the "get_posts" template tag to list out the post or link which in same Category.
However, it require user provide the category ID manually and not fulfill my request actually.
Does it have other solution or plug-in can do that ?