WP Query: How to get posts from a specific author OR posts with a specific meta value

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i have in all of my posts an additional custom field (acf user field) in case the post has a co-author.

All users have their own author-page where all their posts are displayed. No problem so far.

But what i now want is a query where i get all posts where the author is the actual author and all posts where he/she is just the co-author in the custom field.

My code is pretty simple so far, but did not actually work. I guess the ‘relation’ parameter is only for comparing meta query-subarrays.

$args = array(
   'post_type'              => array( 'post' ),
   'posts_per_page'         => 20,
   'relation'               => 'OR',
       array(
           'author'                 => $author_ID,
            ),
       array(
           'meta_key'                => 'authorfeld',
           'meta_value'              => $showme[ID], // This is the authors id from the custom field
            )
    );

Thank you

2 Answers
2

I found some hints here: Can i merge 2 new WP_Query($variable) ‘s?

So i created two separate queries and merged them into a new array:

$wp_query = new WP_Query();
$wp_query->posts = array_merge( $query1->posts, $query2->posts ); 

foreach($wp_query->posts as $post) :
setup_postdata( $post );

And then the usual stuff.

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