php - How to edit user permissions only for selected fields on Opencart?

Solution:

It can't be done by default in OpenCart, you will need to look for an answer on the forums: https://forum.opencart.com/viewtopic.php?t=134562

Or in the extension store: https://www.opencart.com/index.php?route=marketplace/extension&filter_search=permissions

Solution:

Finally this is how I solved:

Added the following lines to admin/controller/catalog/product.php

$this->load->model('user/user_group');
$data['user_groups_id'] = $this->user->getGroupId();
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Then updated admin/view/template/catalog/product_form.twig

{% if user_groups_id == 11 %}
  <input type="text" name="sku" value="{{ sku }}" placeholder="{{ entry_sku }}" 
   id="input-sku" disabled/>
{% else %}
  <input type="text" name="sku" value="{{ sku }}" placeholder="{{ entry_sku }}" 
   id="input-sku" />
{% endif %}
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