Capybara: Select an option by value not text

This will work to select an option by value:

find("option[value='20120905']").click

To maintain the scope of the selector you could wrap it in a within block as such:

within '#date' do
  find("option[value='20120905']").click
end

With Poltergeist as driver I can't click on an option like suggested in some of the other options above, instead you can do the following:

page.find_by_id('date').find("option[value='20120905']").select_option