How to pass default value for a parameter in Symfony routing.
  Sometimes we need to pass a default to any of the passed parameter in a Symfony Routing. Thankfully Symfony Routing has this option as to set in 2nd parameter. Below is how to do this :   While registering a router :    1 2 3 acme_read_company:      path:      /company_read/{id}      defaults:  {  _controller :  "AcmeDemoBundle:Default:readCompany" ,  id : 0  }