changing the rails env. to production

Question

My rails app is working just fine when it is in development mode however if I change it to production mode, it gives something wrong error and I cannot see any reason behind it. Do you know any possible problem ?

This is my error message:

Started GET "/favicon.ico" for 127.0.0.1 at Mon Apr 30 00:55:16 +0300 2012

ActionController::RoutingError (No route matches [GET] "/favicon.ico"):
  actionpack (3.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.1) lib/rails/rack/logger.rb:26:in `call_app'
  railties (3.2.1) lib/rails/rack/logger.rb:16:in `call'
  actionpack (3.2.1) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  rack-cache (1.1) lib/rack/cache/context.rb:132:in `forward'
  rack-cache (1.1) lib/rack/cache/context.rb:241:in `fetch'
  rack-cache (1.1) lib/rack/cache/context.rb:181:in `lookup'
  rack-cache (1.1) lib/rack/cache/context.rb:65:in `call!'
  rack-cache (1.1) lib/rack/cache/context.rb:50:in `call'
  railties (3.2.1) lib/rails/engine.rb:479:in `call'
  railties (3.2.1) lib/rails/application.rb:220:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.1) lib/rails/rack/log_tailer.rb:14:in `call'
  rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
  /home/erogol/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
  /home/erogol/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
  /home/erogol/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
  /home/erogol/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/webrick/server.rb:162:in `start'
  /home/erogol/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
  /home/erogol/.rvm/rubies/ruby-1.8.7-p358/lib/ruby/1.8/webrick/server.rb:95:in `start'
  /home/erogol/.rvm/ru

Thanks all cares...

when I type rake assets:precompile I got:

rake aborted!
no such file to load -- uglifier
  (in /home/erogol/Dropbox/Bunch_It/app/assets/javascripts/application.js)

Tasks: TOP => assets:precompile:primary
(See full trace by running task with --trace)
rake aborted!
Command failed with status (1): [/home/erogol/.rvm/rubies/ruby-1.8.7-p358/b...]

Tasks: TOP => assets:precompile
(See full trace by running task with --trace)

Answer 1

Try to set config.serve_static_assets = true in \\config\\environments\\production.rb file. That helped me.

Answer 2

from the error message, it is said that Rails can't find the file: /favicon.ico. please make sure it exists.

Answer 3

My first guess if this is only in production and not in development is you may need to compile your assets. You would need to either run:

rake assets:precompile

or change your production.rb environment file to include:

config.assets.compile = true

However, the path in the error mesage is just /favicon.ico not assets/favicon.ico . And, the favicon file should just be in your /public directory. Can you confirm that this is where the file is located?

Answer 4

The problem was about the config.assets.compress = true . It creates problem about my javascript files. I set it false and my app start to work just fine. However I do not know whether making it false causes any loss of my program.