Method for creating many-to-one Relationships between custom posts and a single user?

If you haven’t seen it already I would have a look at the posts-to-posts plugin. It allows association between users and posts. the documentation for post<>users code examples is here.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)