Doctrine Watcher Bundle Laravel Package

Product Decisions This Supports

• Real-time data validation & business logic enforcement: Enables dynamic validation or workflows triggered by entity property changes (e.g., auto-updating related records, enforcing constraints, or firing notifications).
• Event-driven architecture: Supports decoupled services reacting to Doctrine entity changes without manual pre/post-persist hooks.
• Custom business rules: Ideal for complex validation logic tied to specific entity properties (e.g., "if Book.title changes, trigger a moderation workflow").
• Roadmap for observability: Foundation for auditing, change tracking, or analytics by monitoring entity property modifications.
• Build vs. buy: Avoids reinventing a custom Doctrine event listener system for property-level granularity.

When to Consider This Package

• Avoid if:
  • You need high-performance bulk operations (this adds overhead per property change).
  • Your use case fits Doctrine lifecycle callbacks (e.g., prePersist, preUpdate) without property-level granularity.
  • You’re using non-Symfony PHP (this is a Symfony bundle).
  • Your team lacks Symfony/Doctrine expertise (configuration requires understanding of entity mapping and services).
• Look elsewhere if:
  • You need GUI-based configuration (this is YAML/service-tag driven).
  • You require scalable distributed event handling (consider a message queue like RabbitMQ or Symfony Messenger).
  • Your project is greenfield with no existing Doctrine entities (setup effort may not justify value).

How to Pitch It (Stakeholders)

For Executives: "This bundle lets us automate complex business rules tied to database changes—like auto-validating content or triggering workflows—without manual coding for every entity update. For example, if a Book.title changes, we can instantly flag it for review or update related inventory. It’s a lightweight way to add intelligence to our data layer, reducing manual checks and improving data quality. Low risk (MIT license, minimal dependencies), high reward for use cases like compliance, moderation, or dynamic pricing."

For Engineering: *"This wraps bentools/doctrine-watcher in a Symfony bundle, giving us property-level event hooks for Doctrine entities. Key benefits:

• Granularity: React to changes in specific fields (e.g., Book.reviews) with custom callbacks.
• Flexibility: Configure via YAML or service tags—no need for invasive code changes.
• Extensibility: Plug into existing Symfony services or add new logic without touching core Doctrine. Tradeoff: Adds a tiny runtime overhead per entity update. Best for niche but critical validation/workflow needs."*