Stock for a specific user management 3.2.X

[fabioweb]

Hello forum, I have to show only to a specific user the alert "notify me" instead of "add to cart"
In short, the product can be ordered by all users except a specific registered user.
How can I do?
Thank you

[Studio 42]

Check for Joomla user ID and modify code.
But if the user is not logged in, you cannot prevent "add to cart"