如何在Wordpress Admin中找到操作更新帖子？

Question

Im kinda new with wordpress. I wonder where is the code excute the action Update when I hit the button "Update" in wP admin when I edit post ? Because I want to modify some information before it update to DB.

Answer 1

You don't really need to know where the code is located, Wordpress provides hooks for almost every action we do.

So in your case, when a post is updated there are some hooks that are fired.

1. pre_post_update Fires immediately before an existing post is updated in the database.

2.transition_post_status Fires when a post is transitioned from one status to another.

The 1st one

do_action( 'pre_post_update', int $post_ID, array $data )

You can run the pre_post_update hook and do whatever you need to do on the post.

https://developer.wordpress.org/reference/hooks/pre_post_update/ https://developer.wordpress.org/reference/hooks/transition_post_status/ https://codex.wordpress.org/Plugin_API/Action_Reference/post_updated