A Rails permit request crosses four distinct boundaries: the controller admits and scopes a reviewer, Active Record shapes a bounded queue, a short transaction commits one approval, and Active Job moves notification work beyond the response. Follow case 62 through each boundary. Every lesson traces a failure that can survive a passing happy-path request test, then asks for measurements and recovery evidence.
Topics in this track
- Rails Controller Parameters and Object Permission — Permit command fields narrowly, then authorize the exact case before projecting a response.
- Rails Active Record Scope, Eager Load, and Page Cost — Scope and bound a review queue, load only displayed relations, and preserve a deterministic order.
- Rails Locking, Transaction, and Command Replay — Lock current case state, commit one approval result, and recover a lost response by operation ID.
- Rails Active Job After-Commit and Outbox Recovery — Delay worker visibility until commit and retain intent when the enqueue handoff fails.
Prerequisite paths
Backend and API Systems; Authorization and Tenant Boundaries; Data Persistence.
Practice and check
Build Project: Rails permit review workflow and review Web Development: Rails request, record, and job quiz.