Rails validation error messages: Displaying only one error message per field

Question

Rails displays all validation error messages associated with a given field. If I have three validates_XXXXX_of :email, and I leave the field blank, I get three

Answer 1

I wrote a custom helper

def display_error(field)
    if @user.errors[field].any?
        raw @user.errors[field].first+"
"
    end
end

and then I use it in view under the text field like so

<%= display_error(:password) %>