symfony - Symfony2 treeBuilder new root item -

i have created new root in treebuilder:

class configuration implements configurationinterface {     public function getconfigtreebuilder()     {         $apinode = $treebuilder->root('nieuwname');         $apinode             ->children()                 ->scalarnode('test')                 ->isrequired()             ->end();     } } 

then next exception:

the child node "test" @ path "nieuwname" must configured.

oké sounds good.

# config.yml nieuwname:     test: "test" 

and exception:

there no extension able load configuration "nieuwname"

what do wrong?

you'll need override extension alias have defined root tree.

namespace your\bundlenamebundle\dependencyinjection;  class yourbundlenameextension implements extensioninterface {     /**      * {@inheritdoc}      */     public function getalias()     {         return 'nieuwname';     } } 

or change root tree name match alias naming convention, tends inflection of bundle name lowercase , underscores.

so bundle called mywebsitebundle have alias my_website

$apinode = $treebuilder->root('your_bundle_name');