How to customize the author page?

sadly the filter avf_post_slider_args is not implemented in the author archive.
It is ruled by author.php and loop-author.php.

So we have to built a custom loop-author.php.

Edit: see solution …

the column count inside that snippet is added as custom-class – so we can react on it by css setting.

I may not have solved it elegantly, but the pagination now works as it should.

Edit : see solution on: https://kriesi.at/support/topic/how-to-customize-the-author-page/#post-1491667

PS – You can see that this method works well – but if you feel anxious about trying it out, please ask a mod to implement it for you.

Edit : see solution on: https://kriesi.at/support/topic/how-to-customize-the-author-page/#post-1491667

now my final solution is – to upload 3 files to the child-theme includes folder:

/wp-content/themes/enfold-child/
└── includes/
  └── loop-author.php ← PHP Loop (loads the css once)
  └── loop-about-author.php
  └── loop-author.css ← all Styles (Grid + List)

loop-author.php: https://pastebin.com/yaXj5Zfw
loop-about.php: https://pastebin.com/QQ84LGaw
loop-author.css: https://pastebin.com/zTJMtth9

to style the author page now are two entries for child-theme functions.php

// 1. Configure layout and settings
add_filter( 'avf_author_loop_args', function( $atts, $context ) {
    if( $context == 'author' ) {
        $atts['type']              = 'list';               // 'grid' or 'list' Layout
        $atts['columns']           = 4;                    // columns count
        $atts['image_size']        = 'gallery';            //  image-size
        $atts['contents']          = 'excerpt_read_more';  // Content-Type
        $atts['items']             = -1;                   // Posts per page
        $atts['paginate']          = 'no';                // Pagination  on/off  (yes or no)
        $atts['show_modified_date'] = 'yes';               // 'yes' = shows  "Updated: XX"
        $atts['orderby']           = 'date';               // orderby : 'date', 'modified', 'title', 'rand', 'comment_count'
        $atts['order']             = 'DESC';               // order: 'DESC' (newest or Z-A) or 'ASC' (oldest or A-Z)
	$atts['fallback_image']     = get_stylesheet_directory_uri() . '/includes/fallback.jpg';  // an url or  'placeholder'
	$atts['post_types'] 		= array('post', 'portfolio');    	// 	count posts or portfolios or both
    }
    return $atts;
}, 10, 2);

// 2.  IMPORTANT: Customise query for pagination, sorting and post types
add_action( 'pre_get_posts', function( $query ) {
    if( ! is_admin() && $query->is_main_query() && is_author() ) {
        // Get the filtered arguments from above
        $default_args = array(
            'items'      => get_option('posts_per_page', 12),
            'orderby'    => 'date',
            'order'      => 'DESC',
            'post_types' => array('post')
        );
        $atts = apply_filters( 'avf_author_loop_args', $default_args, 'author' );
        
        // Set Query-Parameters
        $query->set( 'posts_per_page', $atts['items'] );
        $query->set( 'orderby', $atts['orderby'] );
        $query->set( 'order', $atts['order'] );
        
        // Set post types - IMPORTANT: even if there is only one type
        if( ! empty( $atts['post_types'] ) && is_array( $atts['post_types'] ) ) {
            // WordPress requires 'any' or an array with multiple types
            if( count( $atts['post_types'] ) == 1 ) {
                $query->set( 'post_type', $atts['post_types'][0] );
            } else {
                $query->set( 'post_type', $atts['post_types'] );
            }
        }
    }
}, 999 );

see result page : https://basis.webers-testseite.de/author/guenni007/
Unfortunately, no translation for But we are proud to say that %s contributed %s entries already. has been added to the (at least German) lang files yet. That is why it is in English on my example page.

i tested all 3 blog styles – it works on all of them.

i implemented the possibility to add a custom class set on the grid container (div.av-author-loop-container)
and implemented a css for that custom-class on loop-author.css to rule the column-count for all screen width :

/* ======================================================================
	OPTIONAL: AUTO-FIT GRID  in filter for automatic responsive columns
	Use    $atts['class']   = 'auto-fit-grid';   
   ====================================================================== */
#top.author .av-author-grid-container.auto-fit-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)) !important;
}

this means: Each column must have a minimum width of 250px — the entire width is then filled with columns based on this basis.

_______________

in list view – if you do not like to show the featured image in cover mode – then add to your quick css:

#top.author .av-author-list-image img {
  height: 100%; /* === unset - will bring the image to top === */
  object-fit: contain;  /* === contain - will show the whole image without crop === */
}