app/models/user.rb
class User < AbstractUser
ROLES = ['reader', 'editor', 'publisher', 'administrator']
validates_inclusion_of :role, in: ROLES
validates_length_of :forename, :surname, within: 2..255
validates_presence_of :email
validates_format_of :email, with: URI::MailTo::EMAIL_REGEXP
def name
"#{forename} #{surname}"
end
def initials
"#{forename[0]}#{surname[0]}"
end
end