javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["sentinel"]
  static values = {
    url: String

Infinite scroll with Turbo Frames and Intersection Observer

hotwire turbo stimulus
by Jordan Lee 3 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["modal", "message", "confirm", "cancel"]
  static values = {
    message: String

Turbo confirmation dialogs with custom modal

hotwire turbo stimulus
by Jordan Lee 3 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["parent", "child"]
  static values = {
    options: Object,

Stimulus controller for dependent select dropdowns

stimulus javascript forms
by Jordan Lee 2 tabs
erb
<article class="post">
  <h1><%= @post.title %></h1>
  <%= simple_format @post.body %>

  <!-- Lazy load comments when scrolled into view -->
  <%= turbo_frame_tag "post_#{@post.id}_comments",

Lazy-loading Turbo Frames for performance

hotwire turbo performance
by Jordan Lee 3 tabs
ruby
class CommentsController < ApplicationController
  def create
    @post = Post.find(params[:post_id])
    @comment = @post.comments.build(comment_params)
    @comment.author = current_user

Turbo Streams for real-time list updates

hotwire turbo turbo-streams
by Jordan Lee 2 tabs
javascript
import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["input", "counter"]
  static values = {
    max: { type: Number, default: 280 }

Stimulus controller for dynamic form interactions

stimulus javascript hotwire
by Jordan Lee 2 tabs
erb
<div class="post">
  <h1><%= @post.title %></h1>

  <%= turbo_frame_tag "post_#{@post.id}" do %>
    <div class="post-content">
      <%= simple_format @post.body %>

Turbo Frame for inline editing without page reloads

hotwire turbo turbo-frames
by Jordan Lee 2 tabs
ruby
class ExternalApiClient
  def fetch_user_data(user_id)
    ActiveSupport::Notifications.instrument(
      'api.external_service',
      service: 'user_service',
      operation: 'fetch_user',

API monitoring with custom instrumentation

rails observability monitoring
by Alex Kumar 2 tabs
ruby
class ProcessUploadJob < ApplicationJob
  queue_as :default

  retry_on StandardError, wait: :exponentially_longer, attempts: 5
  discard_on ActiveJob::DeserializationError

ActiveJob for queue adapter abstraction

rails activejob background-jobs
by Alex Kumar 2 tabs
ruby
class CreateUserStatsView < ActiveRecord::Migration[6.1]
  def up
    execute <<-SQL
      CREATE VIEW user_stats AS
      SELECT
        users.id AS user_id,

Database view-backed models for complex queries

rails postgresql database
by Alex Kumar 3 tabs
ruby
Rails.application.config.middleware.insert_before(
  Rack::Runtime,
  Rack::Timeout,
  service_timeout: 15  # 15 seconds
)

Request timeout handling with Rack::Timeout

rails reliability performance
by Alex Kumar 2 tabs
ruby
class CreateApiKeys < ActiveRecord::Migration[6.1]
  def change
    create_table :api_keys do |t|
      t.references :user, null: false, foreign_key: true
      t.string :name, null: false
      t.string :key_digest, null: false

API key authentication for service-to-service calls

rails authentication api
by Alex Kumar 3 tabs