function commerce_tax_field_attach_load in Commerce Core 7

Implements hook_field_attach_load().

File

modules/tax/commerce_tax.module, line 453

Defines tax rates and Rules integration for configuring tax rules for applicability and display.

Code

function commerce_tax_field_attach_load($entity_type, $entities, $age, $options) {

  // If product entities are being loaded...
  if ($entity_type == 'commerce_product') {

    // Loop over all the products looking for prices needing tax calculation.
    foreach ($entities as $product) {

      // Examine every field instance attached to this product's bundle.
      foreach (field_info_instances('commerce_product', $product->type) as $field_name => $instance) {

        // Load the instance's field data.
        $field = field_info_field($instance['field_name']);

        // If the instance is of a price field...
        if ($field['type'] == 'commerce_price' && !empty($product->{$field_name})) {

          // Check to see if the product has specified an included tax.
          foreach ($product->{$field_name} as $langcode => $items) {
            foreach ($items as $delta => $item) {

              // If it specifies a tax and we can load it...
              if (!empty($item['data']['include_tax']) && ($tax_rate = commerce_tax_rate_load($item['data']['include_tax']))) {

                // Clean the price's components array, as we must start with a
                // blank slate to rebuild the components for inclusive taxes.
                $item['data']['components'] = array();

                // Reverse apply the tax.
                $tax_amount = $item['amount'] - $item['amount'] / (1 + $tax_rate['rate']);
                $tax_amount = commerce_tax_rate_round_amount($tax_rate, $tax_amount);

                // Add a base price to the data array.
                $component = array(
                  'amount' => $item['amount'] - $tax_amount,
                  'currency_code' => $item['currency_code'],
                  'data' => array(),
                );
                $item['data'] = commerce_price_component_add($item, 'base_price', $component, TRUE);

                // Add the tax to the data array.
                $component['amount'] = $tax_amount;
                $component['data']['tax_rate'] = $tax_rate;
                $item['data'] = commerce_price_component_add($item, $tax_rate['price_component'], $component, TRUE);

                // Set the new item on the product entity.
                $product->{$field_name}[$langcode][$delta] = $item;
              }
            }
          }
        }
      }
    }
  }
}