Back links for your Ruby on Rails application

Here is a nice little helper I wrote to display back links:

def back_link
    link_to "« Go Back", request.env["HTTP_REFERER"].blank? ? "/" : request.env["HTTP_REFERER"]
end

If you just use the HTTP_REFERER without checking if it’s blank, weird things can happen if someone lands on your page from an email, for example.

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