page_custom-portfolio.php

<?php

// Enqueue Magnific Popup
add_action( 'wp_enqueue_scripts', 'sk_enqueue_scripts' );
function sk_enqueue_scripts() {

    wp_enqueue_style( 'magnific-popup', get_stylesheet_directory_uri() . '/css/magnific-popup.css' );

    wp_enqueue_script( 'magnific-popup', get_stylesheet_directory_uri() . '/js/jquery.magnific-popup.min.js', array( 'jquery' ), '', true );

    wp_enqueue_script( 'magnific-popup-init', get_stylesheet_directory_uri() . '/js/magnific-popup-init.js', array( 'magnific-popup' ), '1.0.0', true );
}

// Template Name: Custom Portfolio

add_action( 'genesis_after_loop', 'sk_do_loop' );
/**
 * Outputs a custom loop
 *
 * @global mixed $paged current page number if paginated
 * @return void
 */
function sk_do_loop() {

    global $paged;

    // accepts any wp_query args
    $args = (array(
        'post_type'      => 'portfolio',
        'paged'          => $paged,
        'posts_per_page' => 6
    ));

    genesis_custom_loop( $args );
}

// Remove entry header
remove_action( 'genesis_entry_header', 'genesis_entry_header_markup_open', 5 );
remove_action( 'genesis_entry_header', 'genesis_entry_header_markup_close', 15 );
remove_action( 'genesis_entry_header', 'genesis_do_post_title' );

// Remove post info
remove_action( 'genesis_entry_header', 'genesis_post_info', 12 );

// Remove the post content
remove_action( 'genesis_entry_content', 'genesis_do_post_content' );

// Remove the post image coming from Theme settings (if set)
remove_action( 'genesis_entry_content', 'genesis_do_post_image', 8 );

// Add Featured image
add_action( 'genesis_entry_content', 'sk_featured_image' );
function sk_featured_image() {
    if ( $image = genesis_get_image( 'format=url&size=portfolio' ) ) {
        printf( '<div class="portfolio-image"><a href="%s" rel="bookmark"><img src="%s" alt="%s" /></a></div>', genesis_get_image( 'format=url' ), $image, the_title_attribute( 'echo=0' ) );
    }
}

/**
 * Display as Columns
 *
 */
function be_portfolio_post_class( $classes ) {

    $columns = 3; // Set the number of columns here

    $column_classes = array( '', '', 'one-half', 'one-third', 'one-fourth', 'one-fifth', 'one-sixth' );
    $classes[] = $column_classes[$columns];
    global $wp_query;
    if( 0 == $wp_query->current_post || 0 == $wp_query->current_post % $columns )
        $classes[] = 'first';

    return $classes;
}
add_filter( 'post_class', 'be_portfolio_post_class' );

// Remove entry meta from entry footer incl. markup
remove_action( 'genesis_entry_footer', 'genesis_entry_footer_markup_open', 5 );
remove_action( 'genesis_entry_footer', 'genesis_entry_footer_markup_close', 15 );
remove_action( 'genesis_entry_footer', 'genesis_post_meta' );

genesis();