app/models/user.rb
class User < ActiveRecord::Base
# Include default devise modules. Others available are:
# :confirmable, :timeoutable and :omniauthable
devise :database_authenticatable, :recoverable,
:registerable, :rememberable, :trackable,
:validatable, :lockable
def days_alive
if birthdate?
(Date.current - birthdate).to_i
else
0
end
end
end