Sometimes I want to print each error of a form right below the input/select box. And at the same time let the user know that there were problems.

If I use error_messages_for, I will be showing the user each error twice… not a good idea.

So for this case I wrote error_message_for, a method that tells you that there is something wrong whether you have 1 error or more. It also accepts more than one model.

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def error_message_for(*args)
  "<p id='errorExplanation'>Oops, enter correct info.</p>" if args.any? {|o| error_messages_for(o).size > 0 }
end

Some usage examples are:

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error_message_for :account
error_message_for :account, :user