Code explainers tagged #scopes

class Coupon < ApplicationRecord
  has_many :redemptions, dependent: :destroy
 
  validates :code, presence: true, uniqueness: { case_sensitive: false }

class Category < ApplicationRecord
  belongs_to :parent, class_name: "Category", optional: true
  has_many :children,
           -> { order(:position) },

class Article < ApplicationRecord
  belongs_to :author
  has_many :taggings, dependent: :destroy
  has_many :tags, through: :taggings

class Author < ApplicationRecord
  has_many :posts
 
  scope :with_post_stats, -> {

class Product < ApplicationRecord
  scope :search, ->(query) {
    return all if query.blank?
 

class Order < ApplicationRecord
  belongs_to :customer
  has_many :line_items
  has_many :products, through: :line_items

class Membership < ApplicationRecord
  belongs_to :organization
  belongs_to :user
 

class Product < ApplicationRecord
  belongs_to :category, touch: true
 
  has_many :reviews, dependent: :destroy

class Booking < ApplicationRecord
  belongs_to :room
  belongs_to :guest
 

class Article < ApplicationRecord
  belongs_to :author, class_name: "User"
  has_many :taggings, dependent: :destroy
  has_many :tags, through: :taggings

class PaymentMethod < ApplicationRecord
  belongs_to :account
 
  encrypts :card_number, deterministic: false

class Account < ApplicationRecord
  has_many :projects, dependent: :destroy_async
  has_many :memberships, dependent: :destroy_async
  has_many :invoices, dependent: :restrict_with_error

class User < ApplicationRecord
  store_accessor :preferences,
    :theme,
    :timezone,

class Subscription < ApplicationRecord
  belongs_to :account
 
  enum :status, {

class ProductsController < ApplicationController
  def index
    @products = Product
      .includes(:category, :brand)

module SoftDeletable
  extend ActiveSupport::Concern
 
  included do

class Article < ApplicationRecord
  belongs_to :author
 
  default_scope { where(deleted_at: nil) }

class Employee < ApplicationRecord
  validates :name, presence: true
  validates :salary, numericality: { greater_than: 0 }