Symfony2 with Sonata Admin:

How to translate in Sonata Admin:

1. You don't need $this->trans
2. Create a directory "translations" in your bundle directory src/TestBundle/Resources
3. add a file AcmeTestBundle.zh_CN.yml
4. app/config/config.yml - default_locale: "zh_CN"
5. In its content translate it like below:

Name: 名字
Activated: 活性
Children: 孩子