Attribute Events Laravel Package

Product Decisions This Supports

• Event-Driven Architecture (EDA) Expansion: Enables granular event handling for business logic tied to attribute changes (e.g., triggering workflows, notifications, or analytics when a status or price field updates).
• Decoupling Logic: Shifts reactive logic (e.g., audit trails, real-time updates) from model methods to dedicated event listeners, improving maintainability and testability.
• Roadmap for Real-Time Features: Foundational for building features like live dashboards, automated alerts, or third-party integrations (e.g., "Notify Slack when order.status changes to cancelled").
• Build vs. Buy: Avoids reinventing attribute-change eventing logic, reducing dev time for custom solutions (e.g., observers or model hooks).
• Use Cases:
  • Audit Logging: Automatically log changes to sensitive fields (e.g., user.role).
  • Workflow Triggers: Kick off processes when attributes meet conditions (e.g., inventory.quantity <= 0 → trigger restock).
  • Analytics: Track attribute transitions (e.g., user.signup_date updates) for cohort analysis.
  • Validation Side Effects: Fire events post-validation to update dependent systems (e.g., sync CRM when customer.tier changes).

When to Consider This Package

• Adopt When:

  • Your Laravel app relies on Eloquent models and needs fine-grained control over attribute changes (beyond Laravel’s built-in events like saved/updated).
  • You’re building event-driven features (e.g., real-time updates, async tasks) tied to specific field modifications.
  • Your team prioritizes separation of concerns—keeping business logic out of model methods.
  • You need wildcard or conditional event mapping (e.g., note:* for any note field change).
  • Your roadmap includes scalable extensions (e.g., adding listeners without modifying core model logic).

• Look Elsewhere If:

  • Your use case is simple CRUD with no need for attribute-specific events (Laravel’s native events suffice).
  • You’re using non-Eloquent models or a framework other than Laravel.
  • You require complex event chaining (consider Laravel’s events facade or a dedicated EDA library like spatie/laravel-event-sourcing).
  • Your team lacks familiarity with event listeners or dependency injection in Laravel.

How to Pitch It (Stakeholders)

For Executives:

"This package lets us react instantly to critical data changes—like a customer’s status update or an order’s shipment—without bloating our models with business logic. For example, we could auto-trigger support tickets when user.account_status changes to suspended, or update inventory systems when product.price is adjusted. It’s a low-code way to build real-time features and workflows, reducing dev time while keeping our architecture clean and scalable."

Key Benefits:

• Faster feature delivery: Ship event-driven logic (e.g., notifications, integrations) without custom observers.
• Reduced technical debt: Decouples reactive logic from models, making code easier to test and maintain.
• Future-proof: Supports complex event patterns (wildcards, conditions) out of the box.

For Engineering:

"This is a lightweight, battle-tested way to handle attribute-level events in Eloquent. Instead of manually checking if ($model->wasChanged('status')) in observers, we define events declaratively in the model (e.g., status:shipped => OrderShipped). It’s MIT-licensed, actively maintained, and integrates seamlessly with Laravel’s event system—no need to reinvent the wheel for use cases like audit logs, async tasks, or real-time updates."

Why It’s a Good Fit:

• Zero boilerplate: Configure events in $dispatchesEvents array; no need for custom traits or base classes.
• Flexible matching: Supports exact matches (status:shipped) or wildcards (note:*).
• Testability: Events are first-class citizens in Laravel; easy to mock and verify.
• Performance: Minimal overhead—events are fired only when attributes change.

Trade-offs:

• Requires familiarity with Laravel’s event system.
• Not a replacement for complex EDA (e.g., sagas, event sourcing) but covers 80% of use cases elegantly.