Activerecord Validations overwrite default message

John Butler wrote:

I know how to overwrite an individual fields validation message using
activerecord see below:

validates_presence_of :name, :message => ": You must enter a contact
name to send us a valid query"

But how do i overwrite the default message displayed at the top

You create your very own error_messages_for helper. It can even be
called something else for that matter.