How to hover over (mouseover) an element in Selenium Ruby?

Question

Anyone know how to hover over an element in Selenium Ruby Webdriver?

My code is like this:

el = driver.find_element(:css => "#foo")
driver.move_to el # How do I trigger a mouseover event on this element?

I'm using selenium-webdriver gem with Firefox in Linux 32-bit.

Answer 1

I used driver.action.move_to(el).perform which differs ever so slightly from the other answers, so I thought I would include it for completeness sake.