Select a link via XPath by it's content and container class

xpath_factory.rb

# encoding: utf-8

# using XPath 1.0, ref: http://www.exampledepot.com/egs/org.w3c.dom/xpath_GetElemByText.html

class XPathFactory
  # build a XPath to find any link with content "content" inside a 
  # container with class "class_name"
  def by_container_class_and_link_content(class_name, content)
    "//*[@class and contains(concat(' ',normalize-space(@class),' ')," +
    "' #{class_name} ')]//a[contains(translate(.,'abcdefghijklmnopqrstuvwxyz'," +
    "'ABCDEFGHIJKLMNOPQRSTUVWXYZ'),'#{content.upcase}')]"
  end
end

xpath_build = XPathFactory.new
element_xpath = xpath_build.by_container_class_and_link_content('find-me-class', 'Click me link')
puts element_xpath
# use in watir, etc