How can I turbo_stream.update a blank instead of zero

If the cart is empty I’m displaying zero until page refresh, how can I turbo_stream.update a blank instead? turbo_stream.update(‘cart_counter’, @cart_counter)

I’m not sure I understand what you’re asking, but what about filling @cart_counter with ''?

That didn’t work I assume because it was in a ternary with a different data type, integer

        @cart_counter = @cart.orderables.count > 0 ? @cart.orderables.count : " "
        respond_to do |format|
          format.turbo_stream do
            render turbo_stream: [turbo_stream.replace('cart',
                                                       partial: 'cart/cart',
                                                       locals: { cart: @cart }),
                                  turbo_stream.update('cart_counter',  @cart_counter)

The code you show sets @cart_counter to a string with a space in it correctly. Confirm it yourself with a debugger on the respond_to line. What is the exact problem you’re having here? Maybe I don’t understand what you’re trying to achieve.