Rspec + Capybara : How to click on alert box

Question

I have gone through the post of capybara + click on alert box but nothing seems to be work. Following is my scenario:

Scenario: When I click update

Answer 1

page.accept_alert

worked for me using Selenium. Other drivers will probably have their own syntax.

As Jillian Foley mentioned, it seems that other answers have been deprecated.