How to reject the discount code for specific product only, using shopify script code

[ayusharmaPM]

Hi, I would like to create a code in shopify script editor which will reject the discount code on a specific product instead of on all products, please suggest.

[Ujjaval]

@ayusharmaPM you can try below code to block specific product block by discount price 

# ID of product you want to block
productId = 10199241991

# Runs through a loop of items in your cart
Input.cart.line_items.each do |line_item|
  product = line_item.variant.product
  puts product.id
  next if product.gift_card?
  next unless product.id == productId
  case Input.cart.discount_code
  when CartDiscount::Percentage
    Input.cart.discount_code.reject({message: "Cannot be used with this product"})
  end
end


Output.cart = Input.cart

[ayusharmaPM]

Hi, Yes this code is correct, But when I checkout with multiple products then it will reject discount code for all products, Which seems wrong to me it should reject discount code for only product that I have define the code.