Example of user model that uses scopes

user_with_scopes.rb

class User < ApplicationRecord
  RECENT_ORDER_DAYS = 3
  RECENT_VISITED_DAYS = 7
  
  scope :subscribed, -> { where(receive_email_notifications: true) }
    
  scope :without_recent_views, -> { where('last_visited < ?', RECENT_VISITED_DAYS.days.ago) }
    
  scope :for_notifications_of_similar_purchases, lambda do
    joins(:orders)
      .where(fulfilled: true)
      .and('orders.updated_at > ?', RECENT_ORDER_DAYS.days.ago)
      .subscribed
  end
  
  has_many :orders
end