class User < ActiveRecord::Base
has_many :posts, dependent: :destroy
before_save { self.email = email.downcase }
before_create :create_remember_token
validates :name,  presence: true, length: { maximum: 30 }
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true,
		 		  format: { with: VALID_EMAIL_REGEX },
		  		uniqueness: { case_sensitive: false }
has_secure_password
validates :password, length: { minimum: 6 }



  def User.new_remember_token
    SecureRandom.urlsafe_base64
  end

  def User.encrypt(token)
    Digest::SHA1.hexdigest(token.to_s)
  end

  private

    def create_remember_token
      self.remember_token = User.encrypt(User.new_remember_token)
    end
end