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  1. class User < ActiveRecord::Base
  2.  
  3.   attr_accessible :name, :email, :password, :password_confirmation
  4.   has_secure_password
  5.   has_many :microposts, dependent: :destroy
  6.   has_many :relationships, foreign_key: "followed_id", dependent: :destroy
  7.   has_many :followed_users, through: :relationships, source: "followed_id"
  8.   has_many :reverse_relationships,  foreign_key: "followed id",
  9.                                     class_name: "Relationships",
  10.                                     dependent: :destroy
  11.   has_many :followers, through: :reverse_relationships, source: :follower
  12.  
  13.   before_save { |user| user.email = email.downcase }
  14.   before_save :create_remember_token
  15.  
  16.   validates :name,  presence: true, length: { maximum: 50 }
  17.   VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
  18.   validates :email, presence: true, format: { with: VALID_EMAIL_REGEX },
  19.                     uniqueness: { case_sensative: false }
  20.   validates :password, length: { minimum: 6 }
  21.   validates :password_confirmation, presence: true
  22.  
  23.   def feed
  24.     Micropost.where("user_id = ?", id)
  25.   end
  26.  
  27.   def following?(other_user)
  28.     relationships.find_by_followed_id(other_user.id)
  29.   end
  30.  
  31.   def follow!(other_user)
  32.     relationships.create!(followed_id: other_user.id)
  33.   end
  34.  
  35.   def unfollow!(other_user)
  36.     relationship.find_by_followed_id(other_user.id).destroy
  37.   end
  38.  
  39.   private
  40.  
  41.   def create_remember_token
  42.     self.remember_token = SecureRandom.urlsafe_base64
  43.   end
  44. end
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