Sonata\DoctrineORMAdminBundle\SonataDoctrineORMAdminBundle' in /app/AppKernel.php

Question

I am new to Symfony. Trying to install sonata admin bundle. form: http://symfony.com/doc/current/bundles/SonataAdminBundle/getting_started/installation.html

But I got an error at Sonata\DoctrineORMAdminBundle\SonataDoctrineORMAdminBundle' not found in /home/ubuntu/workspace/app/AppKernel.php

My AppKernel.php's code is

     use Symfony\Component\HttpKernel\Kernel;
     use Symfony\Component\Config\Loader\LoaderInterface;

     class AppKernel extends Kernel
   {
public function registerBundles()
{
    $bundles = [
        new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
        new Symfony\Bundle\SecurityBundle\SecurityBundle(),
        new Symfony\Bundle\TwigBundle\TwigBundle(),
        new Symfony\Bundle\MonologBundle\MonologBundle(),
        new Symfony\Bundle\SwiftmailerBundle\SwiftmailerBundle(),
        new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
        new Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
        new AppBundle\AppBundle(), 
        new Symfony\Bundle\SecurityBundle\SecurityBundle(),

        // These are the other bundles the SonataAdminBundle relies on
        new Sonata\CoreBundle\SonataCoreBundle(),
        new Sonata\BlockBundle\SonataBlockBundle(),
        new Knp\Bundle\MenuBundle\KnpMenuBundle(),

        // And finally, the storage and SonataAdminBundle
        new Sonata\DoctrineORMAdminBundle\SonataDoctrineORMAdminBundle(),
        new Sonata\AdminBundle\SonataAdminBundle(),
    ];

    if (in_array($this->getEnvironment(), ['dev', 'test'], true)) {
        $bundles[] = new Symfony\Bundle\DebugBundle\DebugBundle();
        $bundles[] = new Symfony\Bundle\WebProfilerBundle\WebProfilerBundle();
        $bundles[] = new Sensio\Bundle\DistributionBundle\SensioDistributionBundle();
        $bundles[] = new Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle();
    }

    return $bundles;
}

public function getRootDir()
{
    return __DIR__;
}

public function getCacheDir()
{
    return dirname(__DIR__).'/var/cache/'.$this->getEnvironment();
}

public function getLogDir()
{
    return dirname(__DIR__).'/var/logs';
}

public function registerContainerConfiguration(LoaderInterface $loader)
{
    $loader->load($this->getRootDir().'/config/config_'.$this->getEnvironment().'.yml');
}

}

like this and composer.json's code is

    {
"name": "symfony/framework-standard-edition",
"license": "MIT",
"type": "project",
"description": "The \"Symfony Standard Edition\" distribution",
"autoload": {
    "psr-4": { "": "src/" },
    "classmap": [ "app/AppKernel.php", "app/AppCache.php" ]
},
"autoload-dev": {
    "psr-4": { "Tests\\": "tests/" }
},
"require": {
    "php": ">=5.5.9",
    "symfony/symfony": "3.1.*",
    "doctrine/orm": "^2.5",
    "doctrine/doctrine-bundle": "^1.6",
    "doctrine/doctrine-cache-bundle": "^1.2",
    "symfony/swiftmailer-bundle": "^2.3",
    "symfony/monolog-bundle": "^2.8",
    "symfony/polyfill-apcu": "^1.0",
    "sensio/distribution-bundle": "^5.0",
    "sensio/framework-extra-bundle": "^3.0.2",
    "incenteev/composer-parameter-handler": "^2.0",
    "sonata-project/admin-bundle": "^3.4"
},
"require-dev": {
    "sensio/generator-bundle": "^3.0",
    "symfony/phpunit-bridge": "^3.0"
},
"scripts": {
    "post-install-cmd": [
        "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
    ],
    "post-update-cmd": [
        "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
    ]
},
"config": {
    "platform": {
        "php": "5.5.9"
    }
},
"extra": {
    "symfony-app-dir": "app",
    "symfony-bin-dir": "bin",
    "symfony-var-dir": "var",
    "symfony-web-dir": "web",
    "symfony-tests-dir": "tests",
    "symfony-assets-install": "relative",
    "incenteev-parameters": {
        "file": "app/config/parameters.yml"
    },
    "branch-alias": {
        "dev-master": "3.1-dev"
    }
}

}

Thanks in Advance:

Answer 1

I think you miss requiring the bundle in composer...

try run

php composer.phar require sonata-project/doctrine-orm-admin-bundle

and composer install / update

From the sonata-admin documentation:

SonataAdminBundle is storage agnostic, meaning it can work with several storage mechanisms. Depending on which you are using on your project, you’ll need to install one of the following bundles. In the respective links you’ll find simple installation instructions for each of them:

More here: https://sonata-project.org/bundles/admin/master/doc/reference/installation.html

Good luck