root/trunk/apps/snippets/config/routing.yml

snippet_detail:
  url:   /snippet/:id
  param: { module: snippet, action: show }
  requirements: { id: ^\d+$ }

snippet_by_comment:
  url:   /snippet/comment/:id
  param: { module: snippet, action: showByComment }
  requirements: { id: ^\d+$ }

# snippet lists
snippet_list:
  url:   /snippets/order_by/:sort/:page
  param: { module: snippet, action: list, page: 1, sort: date }

snippets_for_user:
  url:   /snippets/from/:login/order_by/:sort
  param: { module: snippet, action: listByUser, sort: date }

snippets_for_tag:
  url:   /snippets/tagged/:tag/order_by/:sort
  param: { module: snippet, action: listByTag, sort: date }

# default rules
homepage:
  url:   /
  param: { module: snippet, action: index }

default_symfony:
  url:   /symfony/:action/*
  param: { module: default }

default_index:
  url:   /:module
  param: { action: index }

default:
  url:   /:module/:action/*