SQLAlchemy events provide a powerful way to automate backend tasks by listening to database operations. The guide demonstrates how to use mapper events (before_insert, after_insert, before_update) for model-specific logic like password hashing and email notifications, attribute events for tracking field changes, and session events (before_flush) for cross-model operations like timestamp management. These events help separate business logic from application code, creating cleaner and more maintainable backends.
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The scenario → Welcome to “CodeCrafters”The two flavors of events → Mapper vs. SessionLet’s start building our app2.2K Impressions