# models/user.rb class User < ActiveRecord::Base extend FriendlyId has_secure_password has_many :comments has_many :posts friendly_id :username, use: :slugged before_save :downcase_email validates :email, presence: true, uniqueness: true validates :username, presence: true, uniqueness: true, sluguuidless: true validates :password, length: { minimum: 8 } def registered? true end private def downcase_email self.email = self.email.downcase end end