Restrict authors to only be able to view their own posts in WordPress

HowTo Code Snippets
1

Restrict authors to only be able to view their own posts in WordPress.

Snippet Type

Execute on Child Sites

Snippet

function wp_authors_posts_view( $wp_query ) {
    if ( strpos( $_SERVER[ 'REQUEST_URI' ], '/wp-admin/edit.php' ) !== false ) {
        if ( !current_user_can( 'edit_others_posts' ) ) {
            global $current_user;
            $wp_query->set( 'author', $current_user->id );
        }
    }
}

add_filter('parse_query', 'wp_authors_posts_view' );
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