ExceptionBundle

Clean exception handling for your Symfony 2 bundles

ExceptionBundle helps you managing the exceptions of your bundle:

• Generate exception subclasses from command line including a marker interface
• Replace all global throw statements in a bundle with bundle specific exception classes

Why should you care?

• The simpler exceptions are distinguishable by type, the simpler exceptional conditions are handled
• Providing a marker interface all bundle exception classes implement allows clients to dramatically simplify exception handling
• Usually, creating all the exception sub classes by hand is cumbersome, ExceptionBundle can help you

Usage

Generate bundle specific exception subclasses

This command will generate a bunch of exceptions

php app/console exception:generate app/src/MyVendor/MyBundle "MyVendor\MyBundle" ExceptionInterface RuntimeException DomainException

ls app/src/MyVendor/MyBundle/Exception

ExceptionInterface.php  RuntimeException.php  DomainException.php

cat app/src/MyVendor/MyBundle/Exception/RuntimeException.php

<?php
namespace MyVendor\MyBundle\Exception;

use RuntimeException as BaseRuntimeException;

class RuntimeException extends BaseRuntimeException implements ExceptionInterface
{
}

You can also specify the shortcut "spl" to subclass all Spl Exceptions

Rewrite bundle exceptions

ExceptionBundle uses PHP Parser to rewrite all throw statements in a bundle code base.

cat app/src/MyVendor/MyBundle/MyClass.php

<?php
namespace MyVendor\MyBundle;

use RuntimeException;
...
    throw new RuntimeException('Runtime error');
...
    throw new \InvalidArgumentException('Invalid argument');

php app/console exception:rewrite app/src/MyVendor/MyBundle "MyVendor\MyBundle"

Rewrites the code to:

<?php
namespace MyVendor\MyBundle;

use MyVendor\MyBundle\Exception\InvalidArgumentException;
use MyVendor\MyBundle\Exception\RuntimeException;
...
    throw new RuntimeException('Runtime error');
...
    throw new InvalidArgumentException('Invalid argument');
...

Installation

Add internations/exception-bundle to your composer.json and edit AppKernel.php like this:

<?php
...
class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = array(
            ...
        );

        if ($this->debug) {
            $bundles[] = new InterNations\Bundle\ExceptionBundle\InterNationsExceptionBundle();
        }
    }
}