WordPress: How Can I Obtain Author Details From a Post ID?

I’m trying to display an author’s meta details like their profile link and avatar in the sidebar of a single post page, which exists outside the main loop. I need a reliable method to fetch these details using the post’s ID or the author’s ID. Currently, I use a custom function that returns the post ID, but I’m not sure which function to call next to get the author data. Below is a revised code example:

function fetch_custom_post_id() {
    $currentPost = get_queried_object();
    if (isset($currentPost->ID)) {
        return $currentPost->ID;
    }
    return 0;
}

Any advice on the best approach would be appreciated.

In a similar scenario, I resolved the issue by first using get_post() with the post ID to retrieve the complete post object, then extracting the author ID from that object. With the author ID, I was able to call get_the_author_meta to get any profile details I needed, including constructing the profile link manually if necessary. I eventually also employed get_avatar for the author’s picture. This approach has proved reliable in my projects, especially when dealing with areas outside the main loop where the standard global post object isn’t available.

I have faced similar challenges while working with sidebars outside the main loop. One approach that has worked well for me involves using get_post(post_id) to retrieve the entire post object. Once I have the post object, I can easily access the author ID and then use get_the_author_meta to fetch specific metadata details such as the profile URL. This method has proven effective even in custom templates where the global post variable is not readily available. It is also wise to perform null checks on the returned objects to avoid potential errors during execution.

i use get_post() to snag the post object then grab the author id from $post->post_author. get_the_author_meta() gives me info like avatar and url. works fine outside the loop, but make sure the objct isnt null. cheers

I’ve encountered this scenario before and found that while get_post() works well, there is an alternate method that can simplify obtaining author meta outside the main loop. Instead of first retrieving the post object with get_post(), you can directly use get_queried_object() and then check if it contains the post’s author. This tends to streamline the process. Once you have the author identifier, retrieving details like avatar and profile URL via get_the_author_meta() is straightforward. In my experience, ensuring proper verification at each step has helped in avoiding errors, especially in templates with atypical loop structures.