gistfile1.txt

irb(main):032:0> s.date = "11/9/2007"
=> "11/9/2007"
irb(main):033:0> s.date
=> Tue, 11 Sep 2007 00:00:00 UTC +00:00
irb(main):034:0> s.date = "2007/11/9"
=> "2007/11/9"
irb(main):035:0> s.date
=> Fri, 09 Nov 2007 00:00:00 UTC +00:00
irb(main):036:0> 

The migration for this field:

class AddDateToSermons < ActiveRecord::Migration
  def change
    add_column :sermons, :date, :datetime
  end
end

The model has no reference to date and the controller just mass assigns. Why is this happening?