Hide add to cart and quantity NOT variation info

Well I found the answer in another, old post. The action I need is:

remove_action( 'woocommerce_single_variation','woocommerce_single_variation_add_to_cart_button', 20 );

This removes only the add to cart button and quantity.

As it turns out, while that worked as far as removing the quantity and add to cart button, I later discovered that it caused issues with my plugin WooThumbs. My final solution was adding a body class programmatically that I could use to apply display:none to hide these elements. I also made the select products unpurchasable:

add_filter( 'woocommerce_is_purchasable', '__return_false');
 add_filter( 'body_class', function( $classes ) {
 return array_merge( $classes, array( 'hide-add-to-cart ' ) );

Sure, I’m happy to share my experience and solution.

As I said earlier, because only some products are actually sold online, I needed to figure out a way to remove the quantity and add to cart button from a subset of products.

The products are all categorized, and each category has sub-categories. So I needed to check all single product categories to see if its sub-categories are children of categories that are not sold online.

I searched and searched for solutions based on sub-categories, but all of those solutions required manually creating an array of sub-categories and I needed a solution that would query the db for all current sub-categories because additional sub-categories would be created as time went on.

This is what I came up with:

add_action('wp', 'niba_remove_add_to_cart_from_category' );
 // allow querying of the WP database 
 global $wpdb;
 // Find all children of Rug category parents 19 & 20 (collection & style)
   $catproducts = $wpdb->get_results("
   SELECT t.slug, tt.term_id
   FROM wp_terms AS t
   INNER JOIN wp_term_taxonomy AS tt
   ON t.term_id = tt.term_id
   WHERE tt.parent IN (19)
   OR tt.parent IN (20)
   ", OBJECT );
   // create an array of category slugs of the children
   $catnames = array();
   foreach( $catproducts as $catproduct ) :
     $catnames[] = $catproduct->slug;
   endforeach;

 function niba_remove_add_to_cart_from_category() {
 // only do this if this is a product page
   if ( is_product() ) {
 // make the current product and the array of children available to this 
 // function     
  global $catnames;
  global $product;
	// Get the categories of the current product
	$terms = get_the_terms( get_the_ID(), 'product_cat' );
	// if the product has categories create an array of those categories					
	if ( $terms && ! is_wp_error( $terms ) ) : 
		// make array of the product's categories
		$prodcats = array();
		foreach ( $terms as $term ) {
			// make the array from the slugs
			$prodcats[] = $term->slug;
		}		
	endif;
	 // search for a match in the two arrays: $prodcats and $catnames
	 // to determine if this is a rug collection or style
	 $arr_common = array_intersect( $catnames, $prodcats );
	 
	 // check if $arr_common has any values
	 // if it does then don't show the quantities or add to cart button and make this product umpurchasable
	 if ( $arr_common ) {
     add_filter( 'woocommerce_is_purchasable', '__return_false');
     add_filter( 'body_class', function( $classes ) {
         return array_merge( $classes, array( 'hide-add-to-cart ' ) );
     } );
    }
  }
}

Here’s my associated css:
body.hide-add-to-cart .woocommerce-variation-add-to-cart.variations_button { display:none !important; }

Any suggestions for how this could be improved would be most welcome. I muddled through as best I could. Anyway, this code accomplishes what I needed.

I hope this helps others seeking a similar solution.