ruby

class DocumentsController < ApplicationController
  before_action :set_document, only: :destroy

  def destroy
    @document.discard!

# Define refinements in a module
module StringExtensions
  refine String do
    def titleize
      split.map(&:capitalize).join(' ')
    end

class CreateTags < ActiveRecord::Migration[7.0]
  def change
    create_table :tags do |t|
      t.string :name, null: false
      t.integer :taggings_count, null: false, default: 0
      t.timestamps

# Basic matching
email = "user@example.com"
email =~ /@/  # => 4 (position of match)
email.match?(/@/)  # => true

# Capture groups

class JsonLogFormatter < ActiveSupport::Logger::SimpleFormatter
  def call(severity, timestamp, _progname, message)
    if message.is_a?(Hash)
      entry = {
        ts: timestamp.utc.iso8601(3),
        level: severity

class Rack::Attack
  Rack::Attack.cache.store = ActiveSupport::Cache::RedisCacheStore.new(url: ENV['REDIS_URL'])

  safelist('allow-localhost') do |req|
    req.ip == '127.0.0.1' || req.ip == '::1'
  end

Rails.application.config.session_store(
  :cookie_store,
  key: '_codesnips_session',
  secure: Rails.env.production?,
  httponly: true,
  same_site: :lax,

class ProductsController < ApplicationController
  def index
    @products = Product
      .includes(:category)
      .order(created_at: :desc)
      .page(params[:page])

# Create table migration
class CreateUsers < ActiveRecord::Migration[7.0]
  def change
    create_table :users do |t|
      t.string :email, null: false, index: { unique: true }
      t.string :name, null: false

class SubscriptionsController < ApplicationController
  def new
    @subscription = current_account.subscriptions.new
  end

  def create

import { onCLS, onINP, onLCP, onFCP, onTTFB, type Metric } from 'web-vitals';

export interface VitalPayload {
  id: string;
  name: Metric['name'];
  value: number;

<%# renders a lazy placeholder; real content arrives when scrolled into view %>
<div class="panel-card">
  <h3 class="panel-card__title"><%= title %></h3>

  <%= turbo_frame_tag dom_id(panel, :frame),
        class: "panel-card__body",