Symfony3 ClassNotFoundException after bundle creation
I wanted to start a new 3.3 project in Symfony and started as usual:
1.) Creating the new project: symfony new ArtProject
2.) Creating a new Bundle: php app/console generate:bundle
(Paul/ArtBundle, yml, src/)
Then I run the local server and when I open 127.0.0.1:8000 I get this beautiful message:
(1/1) ClassNotFoundException
Attempted to load class "PaulArtBundle" from namespace "Paul\ArtBundle". Did you forget a "use" statement for another namespace? in AppKernel.php (line 19)
Which is strange and I haven't figured out why this happen so far. Before creating the Bundle, there was no error; I saw the typical startpage of symfony.
public function registerBundles()
{
$bundles = [
new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
......
new Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
new AppBundle\AppBundle(),
new Paul\ArtBundle\PaulArtBundle(),
];
}
<?php
namespace Paul\ArtBundle;
use Symfony\Component\HttpKernel\Bundle\Bundle;
class PaulArtBundle extends Bundle
{
}
Any idea whats going on there? I did not change a thing, I only ran these commands.
Solution 1:
I just installed a fresh copy of S3.3.4 (latest version as of this writing) using:
composer create-project symfony/framework-standard-edition s334 "3.3.4"
bin/console generate:bundle
Share across multiple apps: yes
namespace: Paul\ArtBundle
bundle name: PaulArtBundle
Target Directory: src/
Refreshed the browser and sure enough I got the class not found message.
The generate:bundle command is not updating the autload section of composer.json when a new namespace is introduced. Edit composer.json and:
# composer.json
"autoload": {
"psr-4": {
"AppBundle\\": "src/AppBundle",
"Paul\\": "src/Paul"
},
"classmap": [ "app/AppKernel.php", "app/AppCache.php" ]
},
Then run
composer dumpautoload
And restart the server(maybe). That should fix the bundle class not found problem.
I have not used the generate:bundle command is quite some time ever since the standard was to put everything under AppBundle so I don't know how long this has been "broken". But at least three questions in the last week or so indicates it was something recent.
And by the way, when I refreshed the browser I got "Hello World" which threw me for a bit. Turns out the new bundle overrides the / route which is also sort of special.
And in case anybody is wondering why this started happening, Symfony 3.2 changed from
#composer.json
"psr-4": { "": "src/" },
To
"psr-4": { "AppBundle\\": "src/AppBundle" },
You could always just change it back though I think spelling out individual namespaces might be "better". Not sure.
And here is an issue with more details: https://github.com/symfony/symfony-standard/issues/1098
Looks like the maintainer favored a tiny speed improvement over breaking an existing command. Oh well. Symfony Flex is supposed to make everything great again.
Solution 2:
If you generate a bundle for usage in multiple projects (with own namespace) you need to add it in the composer.json
as follwed:
Lets assume your bundle name is CompanyFooBundle
with namespace Company\Bundle\FooBundle
then the composer autoload section should look like:
...
"autoload": {
"psr-4": {
"Company\\Bundle\\FooBundle\\": "src/Company/Bundle/FooBundle"
},
"classmap": [
"app/AppKernel.php",
"app/AppCache.php"
]
},
...