validates :username, presence: true, length: {maximum: 255}, uniqueness: { case_sensitive: false }, format: { with: /A[a-zA-Z0-9]*z/, :multiline => true, message: "may only contain letters and numbers." }

 has_many :rooms
has_many :reservations
has_many :reviews
validates :username, presence: true, uniqueness: true, case_sensitive:   false,
        length: { minimum: 8, maximum: 32 }
validates :email, presence: true, length: { minimum: 5, maximum: 50 }
validates_format_of :email, with: /^.+@.+..+$/, on: :create, :multiline => true

   scope :landlords, -> { where(type: 'Landlord') }
scope :renters, -> { where(type: 'Renter') }

   def landlord?
self.type == "Landlord"
 end

def renter?
self.type == "Renter"
 end

   attr_writer :login

   def login
   @login || self.username || self.email
 end

def self.from_omniauth(auth)
  email = auth[:info][:email] || "#{auth[:uid]}@facebook.com"
   user = where(email: email).first_or_initialize

if user
  return user
else
    where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
    user.fullname = auth.info.name
    user.provider = auth.provider
    user.uid = auth.uid
    user.email = auth.info.email
    user.image = auth.info.image
    user.password = Devise.friendly_token[0,20]
    end
  end

end