laravel-specialist

name

laravel-specialist

description

Use when building or maintaining Laravel applications — Eloquent ORM, Blade, Livewire, queues, Pest testing, middleware, service providers, migrations. Trigger conditions: Laravel project setup, Eloquent model design, Blade or Livewire component creation, queue/job implementation, Pest test writing, middleware configuration, migration authoring, route definition, Form Request validation, policy authorization, Sanctum/Passport authentication, Horizon queue monitoring.

Laravel Specialist

Overview

Design, build, and maintain production-grade Laravel applications following the framework's conventions and best practices. This skill covers the full Laravel ecosystem: Eloquent ORM with advanced relationship patterns, Blade templating and Livewire interactivity, queue and event systems, middleware pipelines, service providers, Pest testing at every layer, and Artisan tooling for migrations, seeders, and factories.

Apply this skill whenever Laravel is the application framework, whether greenfield or brownfield.

Multi-Phase Process

Phase 1: Context Discovery

1. Identify Laravel version (composer.json -> laravel/framework)
2. Scan config/ for enabled packages and custom configuration
3. Map existing models, relationships, and migration history
4. Review routes/ for API, web, console, and channel definitions
5. Catalog installed first-party packages (Sanctum, Horizon, Telescope, Pulse, Pennant, Scout, Cashier)
6. Check for Livewire, Inertia, or Blade-only frontend stack

STOP — Do NOT begin architecture review without knowing the Laravel version and installed packages.

Documentation Verification Protocol

[HARD-GATE] When uncertain about any Laravel API — verify, don't guess. Use mcp__context7__resolve-library-id then mcp__context7__query-docs (preferred). Fallback: fetch from https://github.com/laravel/docs. For Livewire, Pest, Inertia — resolve each via context7 separately. Returned docs override memorized knowledge.

Phase 2: Architecture Review

1. Verify directory structure follows Laravel conventions (see section below)
2. Assess service provider registrations and deferred loading
3. Review middleware stack ordering and grouping
4. Evaluate queue connection configuration and worker topology
5. Check caching strategy (config, route, view, application-level)

STOP — Do NOT begin implementation until architecture gaps are documented.

Phase 3: Implementation

1. Write migrations first — schema is the source of truth
2. Build Eloquent models with relationships, scopes, casts, and accessors
3. Implement business logic in dedicated Action or Service classes
4. Create controllers (single-action or resourceful) bound to routes
5. Add Form Requests for validation, Policies for authorization
6. Wire events, listeners, and jobs for asynchronous workflows

STOP — Do NOT skip Form Requests and Policies. Inline validation and authorization are anti-patterns.

Phase 4: Testing

1. Unit tests for isolated logic (Actions, Value Objects, Casts)
2. Feature tests for HTTP endpoints and middleware behavior
3. Browser tests with Laravel Dusk for critical user flows
4. Database assertions with assertDatabaseHas, assertSoftDeleted
5. Queue and event fakes for side-effect verification

STOP — Do NOT proceed to optimization without passing tests at all layers.

Phase 5: Optimization

1. Apply eager loading to eliminate N+1 queries
2. Cache expensive computations and config/route/view
3. Index frequently-queried columns; use EXPLAIN to verify
4. Profile with Telescope or Debugbar in development
5. Configure Horizon for production queue monitoring

Eloquent Patterns

Relationships

Relationship	Method	Inverse	Use Case
One-to-One	hasOne	belongsTo	User -> Profile
One-to-Many	hasMany	belongsTo	Post -> Comments
Many-to-Many	belongsToMany	belongsToMany	User <-> Roles (pivot)
Has-Many-Through	hasManyThrough	—	Country -> Posts (through Users)
Polymorphic	morphMany / morphTo	morphTo	Comments on Posts and Videos
Many-to-Many Polymorphic	morphToMany	morphedByMany	Tags on Posts and Videos

Scopes

// Local scope — reusable query constraint
public function scopeActive(Builder $query): Builder
{
    return $query->where('status', 'active');
}

// Usage: User::active()->where('role', 'admin')->get();

// Global scope — applied to all queries on the model
protected static function booted(): void
{
    static::addGlobalScope('published', function (Builder $builder) {
        $builder->whereNotNull('published_at');
    });
}

Accessors, Mutators, and Casts

// Attribute accessor/mutator (Laravel 11+ syntax)
protected function fullName(): Attribute
{
    return Attribute::make(
        get: fn () => "{$this->first_name} {$this->last_name}",
    );
}

// Custom cast
protected function casts(): array
{
    return [
        'options'    => AsCollection::class,
        'address'    => AddressCast::class,
        'status'     => OrderStatus::class,  // Backed enum
        'metadata'   => 'array',
        'is_active'  => 'boolean',
        'amount'     => MoneyCast::class,
    ];
}

Query Optimization with Eager Loading

// BAD — N+1 problem: 1 query for posts + N queries for authors
$posts = Post::all();
foreach ($posts as $post) {
    echo $post->author->name;  // Triggers lazy load each iteration
}

// GOOD — Eager load: 2 queries total
$posts = Post::with('author')->get();

// Nested eager loading
$posts = Post::with(['author', 'comments.user'])->get();

// Constrained eager loading
$posts = Post::with(['comments' => function ($query) {
    $query->where('approved', true)->latest()->limit(5);
}])->get();

// Prevent lazy loading in development
Model::preventLazyLoading(! app()->isProduction());

Blade Templates and Livewire Components

Blade Conventions

• Layouts: resources/views/layouts/app.blade.php using @yield / @section or component-based <x-app-layout>
• Components: resources/views/components/ — anonymous or class-based
• Partials: @include('partials.sidebar') for reusable fragments
• Use {{ }} for escaped output, {!! !!} only when HTML is explicitly trusted
• Prefer Blade directives (@auth, @can, @env) over raw PHP conditionals

Livewire Patterns

// Full-page Livewire component (Livewire 3+)
#[Layout('layouts.app')]
#[Title('Dashboard')]
class Dashboard extends Component
{
    public string $search = '';

    #[Computed]
    public function users(): LengthAwarePaginator
    {
        return User::where('name', 'like', "%{$this->search}%")->paginate(15);
    }

    public function render(): View
    {
        return view('livewire.dashboard');
    }
}

Frontend Stack Decision Table

Decision	Choose Livewire	Choose Inertia
Existing Blade codebase	Yes	No
SPA-like experience required	Partial (with wire:navigate)	Yes
Team has Vue/React expertise	No	Yes
Server-side rendering priority	Yes	Depends on adapter
Real-time reactivity	Yes (polling, streams)	Requires Echo setup
SEO-critical pages	Either works	Either works (SSR adapter)

Queue, Job, and Event Patterns

Job Design

class ProcessInvoice implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public int $tries = 3;
    public int $backoff = 60;
    public int $timeout = 120;
    public string $queue = 'invoices';

    public function __construct(public readonly Invoice $invoice) {}

    public function handle(PdfGenerator $generator): void
    {
        $generator->generate($this->invoice);
    }

    public function failed(Throwable $exception): void
    {
        // Notify admin, log to error tracker
    }
}

Event / Listener Pattern

// Dispatch event
OrderPlaced::dispatch($order);

// Listener (queued)
class SendOrderConfirmation implements ShouldQueue
{
    public function handle(OrderPlaced $event): void
    {
        Mail::to($event->order->user)->send(new OrderConfirmationMail($event->order));
    }
}

Sync vs Async Decision Table

Task	Queued	Synchronous
Sending emails / notifications	Yes	Never in request cycle
PDF generation	Yes	Only if < 2s and user waits
Payment processing	Depends — webhook-driven preferred	If gateway responds < 5s
Cache warming	Yes	Never
Audit logging	Yes (high-volume) or Sync (low-volume)	If guaranteed delivery needed
Search indexing	Yes	Never

Middleware and Service Providers

Middleware Stack Ordering

Middleware order matters. The default stack in bootstrap/app.php (Laravel 11+):

->withMiddleware(function (Middleware $middleware) {
    $middleware->web(append: [
        HandleInertiaRequests::class,  // After session, before response
    ]);

    $middleware->api(prepend: [
        EnsureFrontendRequestsAreStateful::class,  // Sanctum SPA auth
    ]);

    $middleware->alias([
        'role'     => EnsureUserHasRole::class,
        'verified' => EnsureEmailIsVerified::class,
    ]);
})

Service Provider Best Practices

• Register bindings in register(), never resolve from the container there
• Boot logic (event listeners, route model binding, macros) goes in boot()
• Use deferred providers for bindings that are not needed on every request
• Avoid heavy logic in providers — delegate to dedicated classes

Testing with Pest

Unit Test

test('order total calculates tax correctly', function () {
    $order = Order::factory()->make(['subtotal' => 10000, 'tax_rate' => 0.08]);

    expect($order->total)->toBe(10800);
});

Feature Test

test('authenticated user can create a post', function () {
    $user = User::factory()->create();

    $response = $this->actingAs($user)
        ->postJson('/api/posts', [
            'title' => 'My Post',
            'body'  => 'Content here.',
        ]);

    $response->assertCreated()
        ->assertJsonPath('data.title', 'My Post');

    $this->assertDatabaseHas('posts', [
        'user_id' => $user->id,
        'title'   => 'My Post',
    ]);
});

Queue and Event Fakes

test('placing an order dispatches confirmation job', function () {
    Queue::fake();

    $order = Order::factory()->create();
    PlaceOrder::dispatch($order);

    Queue::assertPushed(SendOrderConfirmation::class, function ($job) use ($order) {
        return $job->order->id === $order->id;
    });
});

Browser Test (Dusk)

test('user can complete checkout flow', function () {
    $this->browse(function (Browser $browser) {
        $browser->loginAs(User::factory()->create())
            ->visit('/cart')
            ->press('Checkout')
            ->waitForText('Order Confirmed')
            ->assertSee('Thank you');
    });
});

Artisan Commands, Migrations, Seeders, Factories

Migration Conventions

// Always include down() for rollback capability
public function up(): void
{
    Schema::create('invoices', function (Blueprint $table) {
        $table->id();
        $table->foreignId('user_id')->constrained()->cascadeOnDelete();
        $table->string('number')->unique();
        $table->integer('amount');          // Store money as cents
        $table->string('currency', 3);
        $table->string('status')->default('draft');
        $table->timestamp('due_at')->nullable();
        $table->timestamps();
        $table->softDeletes();

        $table->index(['user_id', 'status']);
    });
}

Factory Patterns

class InvoiceFactory extends Factory
{
    public function definition(): array
    {
        return [
            'user_id'  => User::factory(),
            'number'   => $this->faker->unique()->numerify('INV-####'),
            'amount'   => $this->faker->numberBetween(1000, 100000),
            'currency' => 'USD',
            'status'   => 'draft',
            'due_at'   => now()->addDays(30),
        ];
    }

    public function paid(): static
    {
        return $this->state(fn () => ['status' => 'paid']);
    }

    public function overdue(): static
    {
        return $this->(fn () => [
             => ,
             => ()->(),
        ]);
    }
}

Laravel Directory Structure Conventions

app/
├── Actions/              # Single-purpose action classes
├── Casts/                # Custom Eloquent casts
├── Console/Commands/     # Artisan commands
├── Enums/                # PHP backed enums
├── Events/               # Event classes
├── Exceptions/           # Custom exception classes
├── Http/
│   ├── Controllers/      # Resourceful or single-action controllers
│   ├── Middleware/        # Request/response middleware
│   └── Requests/         # Form Request validation
├── Jobs/                 # Queued job classes
├── Listeners/            # Event listener classes
├── Mail/                 # Mailable classes
├── Models/               # Eloquent models
├── Notifications/        # Notification classes
├── Observers/            # Model observers
├── Policies/             # Authorization policies
├── Providers/            # Service providers
├── Rules/                # Custom validation rules
├── Services/             # Domain service classes
└── View/Components/      # Blade view components
database/
├── factories/            # Model factories
├── migrations/           # Schema migrations (timestamped)
└── seeders/              # Database seeders
resources/views/
├── components/           # Blade components
├── layouts/              # Layout templates
├── livewire/             # Livewire component views
└── mail/                 # Email templates
routes/
├── api.php               # API routes
├── channels.php          # Broadcast channels
├── console.php           # Artisan closures
└── web.php               # Web routes
tests/
├── Feature/              # Feature (integration) tests
├── Unit/                 # Unit tests
└── Browser/              # Dusk browser tests

Decision Tables

Authentication Strategy

Scenario	Recommended Approach
SPA + same domain	Sanctum (cookie-based, CSRF)
SPA + different domain	Sanctum (token-based)
Mobile app	Sanctum (token-based)
Third-party API consumers	Passport (OAuth2)
Simple API tokens	Sanctum (plaintext hash)
Social login	Socialite + Sanctum

Caching Layer

Data Type	Cache Driver	TTL	Invalidation
Config / routes / views	File (artisan cache)	Until next deploy	artisan optimize:clear
Database query results	Redis / Memcached	5-60 min	Event-driven or TTL
Full-page / fragment	Redis	1-15 min	Cache tags
Session data	Redis	Session lifetime	Automatic
Rate limiting	Redis	Window duration	Automatic

File Storage

Scenario	Disk	Driver
User uploads (production)	s3	Amazon S3 / compatible
User uploads (local dev)	local	Local filesystem
Public assets	public	Local with symlink
Temporary files	local	Local, pruned by schedule

Anti-Patterns / Common Mistakes

Anti-Pattern	Why It Fails	What To Do Instead
Fat controllers	Untestable, unmaintainable business logic	Move logic to Action or Service classes
Raw SQL in controllers	SQL injection risk, not portable	Use Eloquent or Query Builder
Missing mass-assignment protection	Data manipulation vulnerabilities	Always define $fillable or $guarded
Inline validation in controllers	Couples validation to HTTP layer	Use Form Requests
Jobs without retry/backoff config	Silent failures, no recovery	Configure $tries, $backoff, failed()
Over-using global scopes	Hidden query behavior surprises developers	Prefer local scopes
Storing money as floats	Floating-point precision errors	Use integer cents, convert at presentation
Missing database indexes	Slow queries at scale	Add composite indexes for WHERE + ORDER BY
Secrets in config files	Credential leaks in version control	Use .env exclusively
Testing against production DB	Data corruption, unreliable tests	Use SQLite in-memory or dedicated test DB
Lazy loading in API responses	N+1 queries, slow API responses	Enable preventLazyLoading() in dev

Anti-Rationalization Guards

• Do NOT skip migrations and edit the database directly -- migrations are the source of truth.
• Do NOT put business logic in controllers because "it's faster" -- use Action classes.
• Do NOT skip Form Requests because "the validation is simple" -- it always grows.
• Do NOT disable preventLazyLoading() because "it's annoying" -- fix the N+1 queries.
• Do NOT store money as floats because "the amounts are small" -- precision errors compound.

Integration Points

Skill	How It Connects
php-specialist	Modern PHP 8.x patterns underpin all Laravel code
laravel-boost	AI-assisted development guidelines and MCP tooling
senior-backend	API design, caching strategies, event-driven architecture
test-driven-development	Pest testing workflow with RED-GREEN-REFACTOR
database-schema-design	Migration planning, indexing strategy, data modeling
security-review	Sanctum/Passport configuration, CSRF, input validation
performance-optimization	Query profiling, cache tuning, queue worker scaling
deployment	Forge/Vapor/Envoyer deployment, artisan optimize
context7 MCP	Fetches up-to-date Laravel docs when information is uncertain
laravel/docs GitHub	Authoritative source for Laravel API reference

Skill Type

FLEXIBLE — Adapt the multi-phase process to the scope of work. A single model change may skip Phase 2 entirely, while a new module should follow all five phases. Core conventions (eager loading, Form Requests, Pest tests, migration-first schema changes) are non-negotiable regardless of scope.