multi-model

Overview ¶

Example: multi-model

Demonstrates multi-table transactions, domain events, and transaction hooks using DDD style (unexported fields + domain methods). This is the only example that uses this encapsulation pattern — all other examples use exported fields.

Key concepts shown:

• Domain model with Transfer method that modifies two entities atomically
• RecordEvent captures domain events during business logic
• OnBeforeCommit hook writes events to an audit_log table within the same transaction (rolled back if commit fails)
• OnAfterCommit hook fires only after successful commit (e.g. logging)

Usage:

cd examples/multi-model
go run ../../cmd/drel generate   # generates users/user_drel.go + db/drel_gen.go
export DATABASE_URL="postgres://localhost:5432/drelexample?sslmode=disable"
go run .