Populate Custom Ordering/Sorting woocommerce - php

Question

I'm trying to figure out on how to populate my custom ordering inside my custom template page.
Here is my work in progress. So far the output shows a select box with empty values. When I check the view source i saw this error.
Warning: Invalid argument supplied for foreach() in C:\Users\Noel\Desktop\xampp\htdocs\lumiere\wp-content\themes\klasik\lumiere-products-page.php on line 23
<?php
$args = array( 'post_type' => 'product', 'posts_per_page' => 10, 'product_cat' => 'Lumiere', 'orderby' => 'rand' );
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post(); global $product; ?>
<?php //Woocommerce Custom Ordering ?>
<form class="woocommerce-ordering" method="get">
<select name="orderby" class="orderby">
<?php foreach ( $catalog_orderby_options as $id => $name ) : ?>
<option value="<?php echo esc_attr( $id ); ?>" <?php selected( $orderby, $id ); ?>><?php echo esc_html( $name ); ?></option>
<?php endforeach; ?>
</select>
<?php
// Keep query string vars intact
foreach ( $_GET as $key => $val ) {
if ( 'orderby' === $key || 'submit' === $key ) {
continue;
}
if ( is_array( $val ) ) {
foreach( $val as $innerVal ) {
echo '<input type="hidden" name="' . esc_attr( $key ) . '[]" value="' . esc_attr( $innerVal ) . '" />';
}
} else {
echo '<input type="hidden" name="' . esc_attr( $key ) . '" value="' . esc_attr( $val ) . '" />';
}
}
?>
</form>
<li class="product product-items ">
<div class="product-item">
<?php woocommerce_show_product_sale_flash( $post, $product ); ?>
<div class="product-thumbnail">
<?php if (has_post_thumbnail( $loop->post->ID )) echo get_the_post_thumbnail($loop->post->ID, 'shop_catalog'); else echo '<img src="'.woocommerce_placeholder_img_src().'" alt="Placeholder" />'; ?>
</div>
<div class="product-info">
<h3>
<?php the_title(); ?>
</h3>
<h4 class="product-category-title">
<?php
$size = sizeof( get_the_terms( $post->ID, 'product_cat' ) );
echo $product->get_categories( ', ', '<span class="posted_in">' . ' ', '.</span>' );
?>
</h4>
<?php echo $product->get_sku(); ?>
<?php echo apply_filters( 'woocommerce_short_description', $post->post_excerpt ) ?>
<?php if ( $price_html = $product->get_price_html() ) : ?>
<span class="price"><?php echo $price_html; ?></span>
<?php endif; ?>
<div class="product-rating">
<?php if ($average = $product->get_average_rating()) : ?>
<?php echo '<div class="star-rating" title="'.sprintf(__( 'Rated %s out of 5', 'woocommerce' ), $average).'"><span style="width:'.( ( $average / 5 ) * 100 ) . '%"><strong itemprop="ratingValue" class="rating">'.$average.'</strong> '.__( 'out of 5', 'woocommerce' ).'</span></div>'; ?>
<?php endif; ?>
</div>
<?php woocommerce_template_loop_add_to_cart( $loop->post, $product ); ?>
</div>
</div>
</li>
<?php endwhile; ?>
<?php wp_reset_query(); ?>
</ul><!--/.products-->