compare datetime in find conditions

Posted by Luca Romagnoli on Stack Overflow See other posts from Stack Overflow or by Luca Romagnoli
Published on 2010-04-01T15:33:24Z Indexed on 2010/04/01 17:33 UTC
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datetime

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Hi, I am trying to get all users that are updated maximum 90 seconds ago:

User.find(:all, :include => { :core => :image }, 
      :conditions => ["updated_at > ?", Time.now - 90.seconds] )

But it doesn't work.

why?

how can i do?

thanks

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