form validation

I am using rails 3.0.7.i validate a field in form by inserting following line in model

class Post < ActiveRecord::Base

validates_presence_of :title

end

But i didn’t work.Is there any syntax change in rails 3.0.7?

Thanks

amritpalpathak.blogspot.com

"It doesn't work"? HOW MANY TIMES? How often are people going to have to ask you to ASK INTELLIGENT QUESTIONS?!

Please read this:    How To Ask Questions The Smart Way

..as it explains how to ask a question, and highlights the likely outcomes of asking poorly framed questions (although, given the responses you get... or rather, that you don't get - since very few people answer you more than once... you might have thought you would have started to gather these for yourself)

:-/

As the question is improper, I feel like providing an improper answer.

“…it works for me.”