ruby

class ArticlesController < ApplicationController
  def index
    # Bounded queries: without preload, article.author in the view raises.
    @articles = Article
      .published
      .preload(:author, :tags)

import { Controller } from "@hotwired/stimulus"
import { NotificationsApi } from "notifications_api"

export default class extends Controller {
  static targets = ["notification"]
  static values = {

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

  validates :body, presence: true

production:
  adapter: postgresql
  encoding: unicode
  pool: <%= ENV.fetch("RAILS_MAX_THREADS", 5) %>
  timeout: 5000
  checkout_timeout: 5

class ProjectsController < ApplicationController
  def create
    @project = Project.new(project_params)

    if @project.save
      response.set_header('Turbo-Location', project_url(@project))

class AddMetadataToUsers < ActiveRecord::Migration[6.1]
  def change
    add_column :users, :metadata, :jsonb, default: {}, null: false
    add_index :users, :metadata, using: :gin
  end
end

class LikesController < ApplicationController
  before_action :set_post

  def create
    @like = @post.likes.find_or_create_by(user: current_user)

class CircuitBreaker
  class CircuitOpenError < StandardError; end

  def initialize(name, redis: Redis.current, failure_threshold: 5, failure_window: 60, cooldown: 30)
    @key = "circuit:#{name}"
    @redis = redis