Rails3 logging issue in development.log

I have a rails3 app, i need to log all into development.log, But when i
check after the execution, the development.log is empty…How to rectify
this problem…

development.rb
*
*
ApiMofobi::Application.configure do

Settings specified here will take precedence over those in

config/application.rb

In the development environment your application’s code is reloaded

on

every request. This slows down response time but is perfect for

development

since you don’t have to restart the web server when you make code

changes.
#Rails.logger = Logger.new(STDOUT)

#Rails.logger = Log4r::Logger.new(“Rails Application Log”)
config.cache_classes = false

Log error messages when you accidentally call methods on nil.

config.whiny_nils = true

Show full error reports and disable caching

config.consider_all_requests_local = true
config.action_controller.perform_caching = false

Don’t care if the mailer can’t send

config.action_mailer.raise_delivery_errors = false

#config.logger = Logger.new(STDOUT)
#logger = Logger.new(‘logfile.log’)

Print deprecation notices to the Rails logger

config.active_support.deprecation = :log

Only use best-standards-support built into browsers

config.action_dispatch.best_standards_support = :builtin

Do not compress assets

config.assets.compress = false

Expands the lines which load the assets

config.assets.debug = true
end

Enviornment.rb

Load the rails application

require File.expand_path(’…/application’, FILE)

Rails.logger = Log4r::Logger.new(“R Log”)

Initialize the rails application

ApiMofobi::Application.initialize!

Thank you
Vishnu