title: Graphing new users by date in a Rails app using Seer
body: <p>I'd like to implement a rolling graph showing new users by day over the last 7 days using Seer.</p>
  
  <p>I've got Seer installed:</p>
  
  <p><a href="http://www.idolhands.com/ruby-on-rails/gems-plugins-and-engines/graphing-for-ruby-on-rails-with-seer" rel="nofollow noreferrer">http://www.idolhands.com/ruby-on-rails/gems-plugins-and-engines/graphing-for-ruby-on-rails-with-seer</a></p>
  
  <p>I'm struggling to get my brain around how to implement.</p>
  
  <p>I've got an array of the Users I want to plot:</p>
  
  <p>@users = User.all( :conditions => {:created_at => 7.days.ago..Time.zone.now})</p>
  
  <p>Can't see the right way to implement the :data_method to roll them up by created_at date.</p>
  
  <p>Anyone done this or similar with Seer?</p>
  
  <p>Anyone smarter than me able to explain this after looking at the Seer sample page (linked above)?</p>