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So just like with routing files, services.yml isn’t magically loaded by Symfony: something needs to import it.
When the bundle was generated, an EventExtension class was created for you.
This class is mostly useful for third-party bundles, but one thing it does by default is load the services.yml file:
// src/Yoda/EventBundle/DependencyInjection/EventExtension.php
// ...
public function load(array $configs, ContainerBuilder $container)
{
// ...
// this was all generated when we generated the bundle
$loader->load('services.yml');
}
If you don’t have this “Extension” class in your bundle, no problem! In fact, delete the entire DependencyInjection directory. Now, just import your services.yml file from inside config.yml:
# app/config/config.yml
imports:
# ...
- { resource: "@EventBundle/Resources/config/services.yml" }
You could also rename services.yml to anything else. As you can see, the name isn’t important.
Note
The point is that any file that defines a service must be imported manually. This can be done via the special “extension” class of a bundle or simply by adding it to the imports section of config.yml or any other configuration file.
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There’s one more thing in our service that’s bothering me. The first argument to the constructor is the entity manager object, but we’re not type-hinting it. Type-hinting is optional, but I like doing it because it gives me better errors and gives me auto-completion in PhpStorm.
So what is the class for the entity manager service? One way to find out is to use container:debug but pass it the service name:
php app/console container:debug doctrine.orm.entity_manager
It says that it’s just an “alias” for a different service. So let’s look up that one:
php app/console container:debug doctrine.orm.default_entity_manager
Great! Now we can add a type-hint for the argument. And by the way, a lot of times I just guess the class name and let PhpStorm mind trick ... I mean auto-complete the use statement for me. It’s lazy, but it almost always works:
// src/Yoda/EventBundle/Reporting/EventReportManager.php
// ...
use Doctrine\ORM\EntityManager;
class EventReportManager
{
private $em;
public function __construct(EntityManager $em)
{
$this->em = $em;
}
}
If you’re not too comfortable with this, don’t worry. This is optional, but a good practice to get into.
// composer.json
{
"require": {
"php": ">=5.3.3",
"symfony/symfony": "~2.4", // v2.4.2
"doctrine/orm": "~2.2,>=2.2.3", // v2.4.2
"doctrine/doctrine-bundle": "~1.2", // v1.2.0
"twig/extensions": "~1.0", // v1.0.1
"symfony/assetic-bundle": "~2.3", // v2.3.0
"symfony/swiftmailer-bundle": "~2.3", // v2.3.5
"symfony/monolog-bundle": "~2.4", // v2.5.0
"sensio/distribution-bundle": "~2.3", // v2.3.4
"sensio/framework-extra-bundle": "~3.0", // v3.0.0
"sensio/generator-bundle": "~2.3", // v2.3.4
"incenteev/composer-parameter-handler": "~2.0", // v2.1.0
"doctrine/doctrine-fixtures-bundle": "~2.2.0", // v2.2.0
"ircmaxell/password-compat": "~1.0.3", // 1.0.3
"phpunit/phpunit": "~4.1", // 4.1.0
"stof/doctrine-extensions-bundle": "~1.1.0" // v1.1.0
}
}