Php Symfony

Symfony Framework Skill

Atomic skill for mastering enterprise-grade Symfony applications

Overview

Comprehensive skill for building robust Symfony applications. Covers Symfony 6.4 LTS and 7.x with focus on Doctrine ORM, dependency injection, and API Platform.

Skill Parameters

Input Validation

interface SkillParams {
  topic:
    | "doctrine"         // ORM, DBAL, migrations
    | "di-container"     // Services, autowiring, tags
    | "routing"          // Routes, controllers
    | "security"         // Voters, firewalls
    | "messenger"        // Async messaging
    | "api-platform"     // REST/GraphQL APIs
    | "forms";           // Form types, validation

  level: "beginner" | "intermediate" | "advanced";
  symfony_version?: "6.4" | "7.0" | "7.1" | "7.2";
  project_type?: "webapp" | "api" | "microservice";
}

Validation Rules

validation:
  topic:
    required: true
    allowed: [doctrine, di-container, routing, security, messenger, api-platform, forms]
  level:
    required: true
  symfony_version:
    default: "7.1"

Learning Modules

Module 1: Doctrine ORM

beginner:
  - Entity creation with attributes
  - Basic relationships
  - Repository basics

intermediate:
  - DQL and QueryBuilder
  - Lifecycle events
  - Custom repository methods

advanced:
  - Inheritance mapping
  - Second-level cache
  - Event subscribers

Module 2: Dependency Injection

beginner:
  - Service basics
  - Autowiring
  - Constructor injection

intermediate:
  - Service tags
  - Factory services
  - Decorators

advanced:
  - Compiler passes
  - Service subscribers
  - Lazy services

Module 3: Messenger Component

beginner:
  - Messages and handlers
  - Sync vs async transports

intermediate:
  - Message middleware
  - Retry strategies
  - Multiple transports

advanced:
  - Custom transports
  - Saga patterns

Execution Flow

graph TD
    A[Skill Invoked] --> B{Validate}
    B -->|Invalid| C[Return Error]
    B -->|Valid| D[Load Content]
    D --> E{Topic Router}
    E --> F[Generate Examples]
    F --> G[Add Console Commands]

Error Handling & Retry Logic

errors:
  CONTAINER_ERROR:
    code: "SYMFONY_001"
    recovery: "Run cache:clear, check services.yaml"

  DOCTRINE_ERROR:
    code: "SYMFONY_002"
    recovery: "Run doctrine:schema:validate"

retry:
  max_attempts: 3
  backoff:
    type: exponential
    initial_delay_ms: 100

Code Examples

Doctrine Entity

<?php
declare(strict_types=1);

namespace App\Entity;

use App\Repository\ProductRepository;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

#[ORM\Entity(repositoryClass: ProductRepository::class)]
#[ORM\HasLifecycleCallbacks]
class Product
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    private ?int $id = null;

    #[ORM\Column(length: 255)]
    #[Assert\NotBlank]
    private string $name;

    #[ORM\ManyToOne(inversedBy: 'products')]
    #[ORM\JoinColumn(nullable: false)]
    private Category $category;

    #[ORM\Column]
    private \DateTimeImmutable $createdAt;

    public function __construct()
    {
        $this->createdAt = new \DateTimeImmutable();
    }
}

Service with DI

<?php
declare(strict_types=1);

namespace App\Service;

use App\Repository\ProductRepository;
use Doctrine\ORM\EntityManagerInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\DependencyInjection\Attribute\Autowire;

final readonly class ProductService
{
    public function __construct(
        private ProductRepository $repository,
        private EntityManagerInterface $entityManager,
        private LoggerInterface $logger,
        #[Autowire('%app.tax_rate%')]
        private float $taxRate,
    ) {}

    public function createProduct(array $data): Product
    {
        $product = new Product();
        $product->setName($data['name']);

        $this->entityManager->persist($product);
        $this->entityManager->flush();

        $this->logger->info('Product created', ['id' => $product->getId()]);

        return $product;
    }
}

Messenger Handler

<?php
declare(strict_types=1);

namespace App\MessageHandler;

use App\Message\SendOrderConfirmation;
use App\Service\EmailService;
use Symfony\Component\Messenger\Attribute\AsMessageHandler;

#[AsMessageHandler]
final readonly class SendOrderConfirmationHandler
{
    public function __construct(
        private EmailService $emailService,
    ) {}

    public function __invoke(SendOrderConfirmation $message): void
    {
        $this->emailService->sendOrderConfirmation($message->orderId);
    }
}

Test Templates

<?php
declare(strict_types=1);

namespace App\Tests\Functional;

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

final class ProductControllerTest extends WebTestCase
{
    public function testListProducts(): void
    {
        $client = static::createClient();
        $client->request('GET', '/api/products');

        $this->assertResponseIsSuccessful();
    }
}

Troubleshooting

Quality Metrics

Usage

Skill("php-symfony", {topic: "messenger", level: "advanced"})

Php Symfony Guide

Overview

This guide provides comprehensive documentation for the php-symfony skill in the custom-plugin-php plugin.

Category: General

Quick Start

Prerequisites

• Familiarity with general concepts
• Development environment set up
• Plugin installed and configured

Basic Usage

# Invoke the skill
claude "php-symfony - [your task description]"

# Example
claude "php-symfony - analyze the current implementation"

Core Concepts

Key Principles

1. Consistency - Follow established patterns 2. Clarity - Write readable, maintainable code 3. Quality - Validate before deployment

Best Practices

• Always validate input data
• Handle edge cases explicitly
• Document your decisions
• Write tests for critical paths

Common Tasks

Task 1: Basic Implementation

# Example implementation pattern
def implement_php_symfony(input_data):
    """
    Implement php-symfony functionality.

    Args:
        input_data: Input to process

    Returns:
        Processed result
    """
    # Validate input
    if not input_data:
        raise ValueError("Input required")

    # Process
    result = process(input_data)

    # Return
    return result

Task 2: Advanced Usage

For advanced scenarios, consider:

• Configuration customization via assets/config.yaml
• Validation using scripts/validate.py
• Integration with other skills

Troubleshooting

Common Issues

Related Resources

• SKILL.md - Skill specification
• config.yaml - Configuration options
• validate.py - Validation script

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Last updated: 2025-12-30

Php Symfony Patterns

Design Patterns

Pattern 1: Input Validation

Always validate input before processing:

def validate_input(data):
    if data is None:
        raise ValueError("Data cannot be None")
    if not isinstance(data, dict):
        raise TypeError("Data must be a dictionary")
    return True

Pattern 2: Error Handling

Use consistent error handling:

try:
    result = risky_operation()
except SpecificError as e:
    logger.error(f"Operation failed: {e}")
    handle_error(e)
except Exception as e:
    logger.exception("Unexpected error")
    raise

Pattern 3: Configuration Loading

Load and validate configuration:

import yaml

def load_config(config_path):
    with open(config_path) as f:
        config = yaml.safe_load(f)
    validate_config(config)
    return config

Anti-Patterns to Avoid

❌ Don't: Swallow Exceptions

# BAD
try:
    do_something()
except:
    pass

✅ Do: Handle Explicitly

# GOOD
try:
    do_something()
except SpecificError as e:
    logger.warning(f"Expected error: {e}")
    return default_value

Category-Specific Patterns: General

Recommended Approach

1. Start with the simplest implementation 2. Add complexity only when needed 3. Test each addition 4. Document decisions

Common Integration Points

• Configuration: assets/config.yaml
• Validation: scripts/validate.py
• Documentation: references/GUIDE.md

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Pattern library for php-symfony skill