Attempted to call method "ifTrue" on class "Sonata\AdminBundle\Form\FormMapper".

[btribouillet]

I'm facing that issue when i'm trying to access the route "/admin/sonata/classification/context/create". I have no ideas where it could come from. I've been following the Documentation step by step.

Attempted to call method "ifTrue" on class "Sonata\AdminBundle\Form\FormMapper".
in vendor/sonata-project/classification-bundle/Admin/ContextAdmin.php at line 27 :

protected function configureFormFields(FormMapper $formMapper)
{
$formMapper
->ifTrue($this->getSubject()->getId() === null)
->add('id')
->ifEnd()
->add('name')

Here my composer.json :

"require": {
"php": ">=5.3.3",
"symfony/symfony": "2.6.",
"doctrine/orm": "~2.2,>=2.2.3",
"doctrine/doctrine-bundle": "~1.2",
"twig/extensions": "~1.0",
"symfony/assetic-bundle": "~2.3",
"symfony/swiftmailer-bundle": "~2.3",
"symfony/monolog-bundle": "~2.4",
"sensio/distribution-bundle": "~3.0.12",
"sensio/framework-extra-bundle": "~3.0",
"incenteev/composer-parameter-handler": "~2.0",
"sonata-project/core-bundle": "~2.2@dev",
"sonata-project/notification-bundle": "~2.3",
"knplabs/knp-markdown-bundle": "~1.2",
"videlalvaro/php-amqplib": "~2.4",
"liip/monitor-bundle": "~2.0",
"symfony-cmf/routing-bundle": "1.4.@dev",
"jms/serializer-bundle": "0.13.*@dev",
"sonata-project/formatter-bundle": "~2.3",
"sonata-project/markitup-bundle": "~2.1",
"sonata-project/intl-bundle": "~2.2",
"sonata-project/cache-bundle": "~2.2",
"sonata-project/seo-bundle": "~1.1",
"sonata-project/easy-extends-bundle": "~2.1",
"sonata-project/admin-bundle": "~2.3",
"sonata-project/doctrine-orm-admin-bundle": "~2.3",
"sonata-project/user-bundle": "~2.2",
"sonata-project/classification-bundle": "dev-master",
"sonata-project/news-bundle": "dev-master",
"sonata-project/timeline-bundle": "~2.2@dev",
"sonata-project/media-bundle": "~2.4@dev",
"sonata-project/page-bundle": "~2.3@dev"
},

And my AppKernel.php :

$bundles = array(
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 Symfony\Bundle\AsseticBundle\AsseticBundle(),
new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
new Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
new JMS\SerializerBundle\JMSSerializerBundle(),
new Knp\Bundle\MarkdownBundle\KnpMarkdownBundle(),
new Knp\Bundle\MenuBundle\KnpMenuBundle(),
new Ivory\CKEditorBundle\IvoryCKEditorBundle(),
new FOS\UserBundle\FOSUserBundle(),
new Spy\TimelineBundle\SpyTimelineBundle(),
new Symfony\Cmf\Bundle\RoutingBundle\CmfRoutingBundle(),
new Sonata\CoreBundle\SonataCoreBundle(),
new Sonata\NotificationBundle\SonataNotificationBundle(),
new Sonata\MarkItUpBundle\SonataMarkItUpBundle(),
new Sonata\FormatterBundle\SonataFormatterBundle(),
new Sonata\IntlBundle\SonataIntlBundle(),
new Sonata\CacheBundle\SonataCacheBundle(),
new Sonata\SeoBundle\SonataSeoBundle(),
new Sonata\BlockBundle\SonataBlockBundle(),
new Sonata\DoctrineORMAdminBundle\SonataDoctrineORMAdminBundle(),
new Sonata\AdminBundle\SonataAdminBundle(),
new Sonata\UserBundle\SonataUserBundle('FOSUserBundle'),
new Sonata\ClassificationBundle\SonataClassificationBundle(),
new Sonata\MediaBundle\SonataMediaBundle(),
new Sonata\NewsBundle\SonataNewsBundle(),
new Sonata\EasyExtendsBundle\SonataEasyExtendsBundle(),
new Sonata\TimelineBundle\SonataTimelineBundle(),
new Sonata\PageBundle\SonataPageBundle(),
new Application\Sonata\UserBundle\ApplicationSonataUserBundle(),
new Application\Sonata\ClassificationBundle\ApplicationSonataClassificationBundle(),
new Application\Sonata\MediaBundle\ApplicationSonataMediaBundle(),
new Application\Sonata\NewsBundle\ApplicationSonataNewsBundle(),
new Application\Sonata\TimelineBundle\ApplicationSonataTimelineBundle(),
new Application\Sonata\PageBundle\ApplicationSonataPageBundle(),
new Application\Sonata\NotificationBundle\ApplicationSonataNotificationBundle(),
new AppBundle\AppBundle(),
);

I wonder is this would help :

1 - DEBUG - Router Sonata\PageBundle\Route\CmsPageRouter was not able to match, message "No site defined"

[antoinemineau]

@brieuc28 I answered on stack overflow about this issue : http://stackoverflow.com/questions/28279388/sonata-sf2-attempted-to-call-method-iftrue-on-route-classification-context/28281067#28281067

[btribouillet]

Okay it is solved. I was using dev versions ... This is why IfTrue didn't exist. I changed my bundles to the stable version and it did solve all the problems. Thank you for the help.