Dependencies Symfony2

Question

I'm wondering if there is a proper way to check the dependencies.

For example I've got a NewsBundle. Now I'll have to check if there is a CommentBundle. If there is one, it should execute a few more Code.

Any suggestions?

score 28 · Accepted Answer · edited Sep 18 '12 at 15:17

28

In addition to markymark's answer, you can check if a specific service exists from your controller (or any other container-aware code) with the following snippet:

if ($this->container->has('foo_service.alias'))
{
    // service is loaded and usable
}

If you're not sure of the exact alias of a given service, or just for kicks and giggles, you can run the console command php app/console container:debug to see all services registered with the container.

edited Sep 18 '12 at 15:17

Besnik

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answered Jun 07 '11 at 20:48

Problematic

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+1, your answer is clearer and correct to me as the above one. It's better to ask for services - and not for bundles. – Besnik Sep 18 '12 at 15:15

score 2 · Answer 2 · answered Jun 01 '11 at 09:47

2

You could use class_exists on the main Bundle class that every bundle should have.

For example:

if (class_exists('Acme\CommentBundle\AcmeCommentBundle'))
{
    // Bundle exists and is loaded by AppKernel...
}

answered Jun 01 '11 at 09:47

markymark

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Dear @markymark, are you sure this will give you right result? Imagine situation: bundle is present on the filesystem, but wasn't registered in `AppKernel` (meaning neither bundle's routes neither services were loaded). Isn't it true that `class_exists('Some\Name\Space\Class') will try to autoload the class even despite it wasn't registed with the bundle? I wonder what do you think about it? HTH – Dimitry K Jun 26 '14 at 14:48
See https://stackoverflow.com/a/6271443/3027445 <- way better to check for service name instead of class name – podarok Aug 27 '18 at 14:38

score 0 · Answer 3 · answered Dec 16 '14 at 14:10

The Kernel class contains a list of helper methods to check if a certain class is part of an active bundle or if a bundle is registered.

public BundleInterface[] getBundles()
    Gets the registered bundle instances.

public bool isClassInActiveBundle(string $class)
    Checks if a given class name belongs to an active bundle.

Dependencies Symfony2

3 Answers3