Variation fields missing from feed since update

Hi, thank you for your reply. We have manually added the field location inside variations via functions.php. This used to work perfectly, but all fields inside product feed pro regarding this location have disapperared after updating.

//ACF extension for product variations
// Add "Product Variation" location rule values
function my_acf_location_rule_values_post_type($choices){

	$keys = array_keys($choices);
	$index = array_search('product', $keys);

	$position = $index === false ? count($choices) : $index + 1;

	$choices = array_merge(
		array_slice($choices, 0, $position),
		array('product_variation' => __('Product Variation', 'auf')),
		array_slice($choices, $position)
	);

	return $choices;
}

add_filter('acf/location/rule_values/post_type', 'my_acf_location_rule_values_post_type');

// Add "Product Variation" location rule match
function my_acf_location_rule_match_post_type($match, $rule, $options, $field_group){

	if ($rule['value'] == 'product_variation') {
		$post_type = $options['post_type'];

		if ($rule['operator'] == "==")
			$match = $post_type == $rule['value'];

		elseif ($rule['operator'] == "!=")
			$match = $post_type != $rule['value'];
	}

	return $match;
}

add_filter('acf/location/rule_match/post_type', 'my_acf_location_rule_match_post_type', 10, 4);
// Render fields at the bottom of variations - does not account for field group order or placement.
add_action( 'woocommerce_product_after_variable_attributes', function( $loop, $variation_data, $variation ) {
    global $abcdefgh_i; // Custom global variable to monitor index
    $abcdefgh_i = $loop;
    // Add filter to update field name
    add_filter( 'acf/prepare_field', 'acf_prepare_field_update_field_name' );
    
    // Loop through all field groups
    $acf_field_groups = acf_get_field_groups();
    foreach( $acf_field_groups as $acf_field_group ) {
        foreach( $acf_field_group['location'] as $group_locations ) {
            foreach( $group_locations as $rule ) {
                // See if field Group has at least one post_type = Variations rule - does not validate other rules
                if( $rule['param'] == 'post_type' && $rule['operator'] == '==' && $rule['value'] == 'product_variation' ) {
                    // Render field Group
                    acf_render_fields( $variation->ID, acf_get_fields( $acf_field_group ) );
                    break 2;
                }
            }
        }
    }
    
    // Remove filter
    remove_filter( 'acf/prepare_field', 'acf_prepare_field_update_field_name' );
}, 10, 3 );

// Filter function to update field names
function  acf_prepare_field_update_field_name( $field ) {
    global $abcdefgh_i;
    $field['name'] = preg_replace( '/^acf\[/', "acf[$abcdefgh_i][", $field['name'] );
    return $field;
}
    
// Save variation data
add_action( 'woocommerce_save_product_variation', function( $variation_id, $i = -1 ) {
    // Update all fields for the current variation
    if ( ! empty( $_POST['acf'] ) && is_array( $_POST['acf'] ) && array_key_exists( $i, $_POST['acf'] ) && is_array( ( $fields = $_POST['acf'][ $i ] ) ) ) {
        foreach ( $fields as $key => $val ) {
            update_field( $key, $val, $variation_id );
        }
    }
}, 10, 2 );

//make variation fields displayable
function custom_variation_fields ($variations) {
  $variations['variation_ingredients'] = get_field('variation_ingredients', $variations[ 'variation_id']);

  return $variations;
}
add_filter('woocommerce_available_variation', 'custom_variation_fields', 10, 1);

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• This reply was modified 4 years, 5 months ago by deuf9912.
• This reply was modified 4 years, 5 months ago by deuf9912.

Thank you for your reply.
But how do you suggest to add fields to product variations? I need to add custom attributes to my feeds, that differ by variation.

I have simply added a ACF field location, not the fields itself via functions.php. The field contents still are stored in the same location, as post meta entry under the corresponding post id (=variation ID).

What can I do to have variation fields recognized in my feed configuration?