Generate a select list of sundays in Rails 3

Hey All, I am using Rails 3 and the Chronic gem (for date parsing) and need to create a select list of Sundays for the past 6 months. Here is what I have so far:

<开发者_如何学JAVA%
  # weeks in 6 months = 26
  week = 1
  sunday = Date.parse( Chronic.parse('this sunday').to_s )
  sunday_array = []
  while week <= 26
    sunday_array << sunday - ( week * 7 )
    week += 1
  end
%>
<%= select_tag 'sunday', options_for_select( sunday_array ) %>

Does anybody know a better / cleaner way of doing this? Thanks.

---

You can play code golf with...

sunday = Date.parse( Chronic.parse('this sunday').to_s )
sunday_array = []
26.times { |i| sunday_array << sunday - ( i * 7) } 

And then get rid of your magic numbers....

NUM_SUNDAYS = 26
sunday = Date.parse( Chronic.parse('this sunday').to_s )
sunday_array = []
NUM_SUNDAYS.times { |i| sunday_array << sunday - ( i * 7) }

And obviously, you would move it into a helper method so it's not sitting in your ERB. :)