Laravel Eloquent

Priority: P0 (CRITICAL)

Structure

app/
└── Models/
    ├── {Model}.php
    └── Scopes/         # Advanced global scopes

Implementation Guidelines

• N+1 Prevention: Always use with() or $with for relationships.
• Eager Loading: Set strict loading via Eloquent::preventLazyLoading().
• Reusable Scopes: Define scopeName methods for common query filters.
• Mass Assignment: Define $fillable and use $request->validated().
• Performance: Use chunk(), lazy(), or cursor() for large tasks.
• Casting: Use $casts for dates, JSON, and custom types.

Anti-Patterns

• N+1 Queries: No lazy loading: Never query relationships in loops.
• Fat Models: No business logic: Models are for data access only.
• Magic Queries: No raw SQL: Use Query Builder or Eloquent.
• Select *: No excessive data: Select only required columns.

References

• Eloquent Performance Guide