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Ruby on Rails Certified

Ruby on Rails Certified

Course outline

Module 1 · Ruby and Rails architecture

Ruby object model, blocks, and enumerables
Rails structure, configuration, and Zeitwerk
Ruby contracts and error design

Module 2 · Request flow and Hotwire

REST routing, controllers, and strong parameters
Views, Hotwire, Stimulus, and accessibility
Strong parameters and HTTP contracts
Turbo, Stimulus, and progressive enhancement

Module 3 · Active Record and data integrity

Associations, validations, and database constraints
Query composition, transactions, and locking
Safe migrations and backfills

Module 4 · Domain and service design

POROs, service, query, and form objects
Domain invariants and side-effect boundaries

Module 5 · Authentication and security

Sessions, password handling, and authorization
CSRF, XSS, injection, CSP, and secrets
Policy authorization and multitenancy

Module 6 · Jobs, mailers, files, and realtime

Active Job, retries, idempotency, and outbox
Mailers, Active Storage, Cable, and Turbo Streams
Outbox delivery and deduplication
Authorized realtime delivery

Module 7 · Testing and observability

Model, request, job, and system tests
Structured logs, errors, health, and tracing
Production observability and service signals

Module 8 · Performance and delivery

Caching, indexes, pools, and pagination
Deployment, migrations, compatibility, and rollback

Structured logs, errors, health, and tracing

This lesson is part of the paid course.

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