ruby

require 'swagger_helper'

RSpec.describe 'Api::V1::Posts', type: :request do
  path '/api/v1/posts' do
    get 'Retrieves all posts' do
      tags 'Posts'

class OverdueInvoicesQuery
  def initialize(relation: Invoice.all, as_of: Time.current)
    @relation = relation
    @as_of = as_of
  end

class SessionsController < ApplicationController
  def create
    # ... auth ...
    redirect_to dashboard_path, status: :see_other
  end
end

class Order < ApplicationRecord
  include TransactionalEnqueue

  belongs_to :customer
  has_many :line_items, dependent: :destroy

module DomainEvents
  class Registry
    def initialize
      @subscribers = Hash.new { |h, k| h[k] = [] }
    end

class ApplicationController < ActionController::Base
  before_action do
    Current.client = request.headers['X-Client']
  end
end

class HealthController < ApplicationController
  skip_before_action :verify_authenticity_token

  def liveness
    render json: { status: 'ok' }, status: :ok
  end

class CreateAuditLogs < ActiveRecord::Migration[7.1]
  def change
    create_table :audit_logs do |t|
      t.references :auditable, polymorphic: true, null: false
      t.string :actor
      t.string :action, null: false

module Types
  class PostType < Types::BaseObject
    field :id, ID, null: false
    field :title, String, null: false
    field :body, String, null: false
    field :excerpt, String, null: true

class AddCommentsCountToPosts < ActiveRecord::Migration[6.1]
  def up
    add_column :posts, :comments_count, :integer, default: 0, null: false

    # Populate existing counts
    Post.find_each do |post|

# Basic middleware structure
class RequestTimerMiddleware
  def initialize(app)
    @app = app
  end

<%# Fragment caching - caches rendered HTML %>
<% cache @product do %>
  <h1><%= @product.name %></h1>
  <p><%= @product.description %></p>
  <p>Price: $<%= @product.price %></p>
<% end %>