如何使用opencart3在产品页面中显示upc？

Question

I want to display the upc in product page with opencart 3. How do I do that?

I added the below code into my template file /catalog/view/theme/default/template/product/product.twig ，but it doesn't work.

{% if upc %}
    {{ upc }}
{% endif %}

Answer 1

Please do not forget to backup these files first.

You have to add upc as a variable to the controller first and then echo it in the template. in order to do that: first edit controller file:

/catalog/controller/product/product.php

and search for

$data['model'] = $product_info['model'];

after that add:

$data['upc'] = $product_info['upc'];

and save the file.

After that your code in template file that you mentioned will work.

ps: by this approach you lose these changes if you update opencart.A better approach would be to make an ocmod extension for it.