Before_save filter not working

I dont understand, nothing could be simpler:

class Visit < ActiveRecord::Base开发者_Python百科
  def before_save
    self.visited_on = "test" 
  end
end

Yet, if I do:

a = Visit.first
a.user_id = 5
a.save
a.visited_on
=> nil #WTF?

I know that filters must return true, but this one is... What could be the issue?

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Are you sure your record is actually being saved? If user_id is already 5 then a.save won't perform the save. Also if visited_on is date and/or time then "test" might be converted to nil. Try using current time or something similar.

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Typical stupid dev error: I had two classes Visit in my code. I dont know how it happened but deleting the empty class fixed the issue. Sorry for wasting your time.