Write custom attribute on final_price.phtml

Question

I would like to get a custom attribute "bum" (base unit of measure) on the page "final_price.phtml". Do you know if it's possible to add a custom attribute after the price to something like this:

• before : $ 2.35
• after : $ 2.35 per RL

final_price.phtml:

Thank you for your help

Answer 1

Try following way:

Create plugin

<type name="Magento\Framework\Pricing\Render\PriceBox">
    <plugin name="sr_quantity_type_product_render_amount" type="Vendor\Module\Plugin\Pricing\Render\PriceBox" sortOrder="1"/>
</type>

Vendor/Module/Plugin/Pricing/Render/PriceBox.php

namespace Vendor\Module\Plugin\Pricing\Render;

use Magento\Framework\Pricing\Amount\AmountInterface;

class PriceBox
{
    /**
     * @var \Magento\Catalog\Api\ProductRepositoryInterface
     */
    protected $productRepository;

    /**
     * PriceBox constructor.
     *
     * @param \Magento\Catalog\Api\ProductRepositoryInterface $productRepository
     */
    public function __construct(\Magento\Catalog\Api\ProductRepositoryInterface $productRepository)
    {
        $this->productRepository = $productRepository;
    }

    public function aroundRenderAmount(
        \Magento\Framework\Pricing\Render\PriceBox $subject,
        \Closure $proceed,
        AmountInterface $amount,
        array $arguments = []
    ) {
        $html = $proceed($amount, $arguments);
        $product = $this->productRepository->getById($subject->getSaleableItem()->getId());
        $bum = $product->getBum() ? $product->getAttributeText('bum') : '';
        if ($bum) {
            $html .= '<div>' . __('per') . ' ' .$bum . '</div>';;
        }

        return $html;
    }
}