ruby on rails - How do I confirm a javascript popup with Capybara?

Question

I've tried several examples found online, but with no luck. I am looking to confirm the confirm message of a delete link. The last attempt was the code below, but that resulted in an Capybara::NotSupportedByDriverError error.

def confirm_dialog
  page.evaluate_script('window.confirm = function() { return true; }')
end

Answer 1

Adding an answer for those hitting this in 2016 and beyond. You can now use Capybara directly to accept a confirmation box. You do this by wrapping the code that causes the confirmation box to appear in the accept_confirm function.

accept_confirm do
  click_link 'Destroy'
end