rails-controllers-advanced

Rails controllers use rescue_from to catch exceptions globally and standardize error responses. This pattern unifies HTML redirects with flash messaging and JSON API error payloads, reducing boilerplate across CRUD actions.

Rails before, after, and around actions provide lifecycle hooks to manage authentication, authorization, and shared setup. Conditional filters ensure these callbacks execute only for specific actions, keeping controller logic thin and consistent.

Rails controllers support streaming updates via Turbo Streams and Server-Sent Events for real-time UI synchronization. These patterns handle multi-format responses, pushing incremental HTML or data fragments directly to connected clients.

Rails controllers secure API endpoints by enforcing CSRF tokens, validating strong parameters, and implementing authorization checks. These mechanisms prevent mass assignment vulnerabilities and unauthorized data access across JSON responses.

Rails controller testing scaffolds verify authorization checks, CRUD permissions, and edge cases. Structured test patterns ensure error handlers and action callbacks behave correctly across HTML, JSON, and streaming response formats.