handling iframe with capybara ruby

Question

Below is the html code ..

<iframe id="I0_1366100881331" frameborder="0" width="100%">
<div class="ZRa">
<span id="button" class="hAa Qo Bg" tabindex="0" role="button" title="" aria-      label="Click here to publicly +1 this." aria-pressed="false">
</div>
</iframe>    

In the above scenario, I want to switch into the IFRAME (iframe id="I0_1366100881331") to perform some actions on the SPAN present in that IFRAME. I have tried with most of the cases but no result :(... any one please help.

I want the solution for cucumber using capybara ruby only..

Note: I tried with following code but no result.

page.driver.browser.switch_to.frame "I0_1366100881331"

Answer 1

within_frame(find('<css rule>')) do
  <code for dealing with iframe entries>
end