rails

class CreateCustomerRevenueSummaries < ActiveRecord::Migration[7.0]
  def change
    create_view :customer_revenue_summaries, materialized: true, version: 1

    add_index :customer_revenue_summaries,
              :customer_id,

<div class="dashboard">
  <header class="dashboard__header">
    <h1>Overview</h1>
    <p class="muted">Real-time metrics update as they load.</p>
  </header>

class ArticlesController < ApplicationController
  before_action :set_article, only: %i[edit update]

  def new
    @article = Article.new
  end

<%= form_with model: @profile do |form| %>
  <div
    class="field"
    data-controller="character-count"
    data-character-count-max-value="280"
  >

module Api
  module V1
    class UsersController < ApplicationController
      before_action :authenticate_user!, except: [:index, :show]
      before_action :set_user, only: [:show, :update, :destroy]

class Comment < ApplicationRecord
  belongs_to :post
  belongs_to :author, class_name: "User"

  validates :body, presence: true, length: { maximum: 2_000 }

class DailySignupRollup < ApplicationRecord
  validates :day, presence: true, uniqueness: true
  validates :total, :verified, numericality: { greater_than_or_equal_to: 0 }

  scope :for_range, ->(from, to) do
    where(day: from.to_date..to.to_date).order(:day)

class ReportsController < ApplicationController
  def monthly_sales
    year = params.fetch(:year, Date.current.year).to_i
    rows = Order.monthly_sales(year: year)
    @report = MonthlySalesReport.new(rows, year: year)

class NotificationsChannel < ApplicationCable::Channel
  def subscribed
    stream_for current_user
  end

  def unsubscribed

class ApplicationPolicy
  attr_reader :user, :record

  def initialize(user, record)
    @user = user
    @record = record

class User < ApplicationRecord
  has_secure_password

  RESET_TOKEN_TTL = 30.minutes

  def self.reset_verifier

<h1>Catalog</h1>

<%= turbo_frame_tag "products" do %>
  <div class="product-grid" data-controller="frame">
    <% @products.each do |product| %>
      <%= render "products/card", product: product %>