如何获取symfony控制器内的服务参数？

Question

Say I have a app/config/parameters.yml which contains

parameters:
    database_driver:   pdo_mysql
    ...
nacho_image: 
    upload: true
    progress: false 
    key: secret_id

Now, I would like to get upload, progress, key in my controller, but doing

$this->get('upload'); 
$this->get('nacho_image.upload'); 
$this->get('nacho.image.upload'); 
$this->getParameter('nacho.upload'); 
$this->getParameter('acho_image.upload.upload'); 

doesn't work...

Answer 1

You cannot directly get a nested parameter. you have to get the parent key and you will get all the content as an array

$nachoImageConfig = $this->getParameter('nacho_image');
$nachoImageUpload = $nachoImageConfig['upload'];

From the doc (http://symfony.com/doc/current/service_container/parameters.html):

The used . notation is just a Symfony convention to make parameters easier to read. Parameters are just flat key-value elements, they can't be organized into a nested array

That is why in most config files, the entries under 'parameters:' are fully qualified like this:

parameters:

    ...

    nacho_image.upload: true
    nacho_image.progress: false 
    nacho_image.key: secret_id