Using config.gem causes an error on RoR application start

Question

I'm trying to use newrelic in my project. I've installed newrelic gem successfully and the next step was adding config.gem "newrelic_rpm" to environment.rb

When I use config.gem in environment.rb I'm getting Ruby on Rails application could not be started However using config.gem "dfgdsgsdgsdfg" causes the same error.

How can I solve the problem?

I'm running Debian Linux, Apache2, RVM 1.8.6, Passenger 3, Rails 2.3.5, Ruby 1.8.7, gem 1.8.10

Here is my environment.rb

RAILS_GEM_VERSION = '2.3.5' unless defined? RAILS_GEM_VERSION

require File.join(File.dirname(__FILE__), 'boot')

Rails::Initializer.run do |config|

config.gem "newrelic_rpm"


config.time_zone = 'UTC'

config.action_mailer.delivery_method = :smtp
config.action_mailer.default_content_type = "text/html"
config.action_mailer.smtp_settings = {
    :address => "smtp.xxx.xx",
    :port => 25,
    :domain => "xxxx.com",
    :authentication => :login,
    :user_name => "site@xxxxx.com",
    :password => "xxxxx"
    :enable_starttls_auto => true
}
end

and full backtrace

Ruby on Rails application could not be started


Error message:
    undefined method `name' for "actionmailer":String
Exception class:
    NoMethodError
Application root:
    /var/www/ytndweb/data/www/rc.xxxx.xx 
Backtrace:
#   File    Line    Location
0   /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/rails/gem_dependency.rb    268     in `=='
1   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/dependency.rb     217     in `==='
2   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/dependency.rb     217     in `matching_specs'
3   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb     36  in `find_all'
4   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/specification.rb  410     in `each'
5   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/specification.rb  409     in `each'
6   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/dependency.rb     216     in `find_all'
7   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/dependency.rb     216     in `matching_specs'
8   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/dependency.rb     238     in `to_specs'
9   /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/dependency.rb     256     in `to_spec'
10  /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems.rb    1210    in `gem'
11  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/rails/gem_dependency.rb    73  in `add_load_paths'
12  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/initializer.rb     301     in `add_gem_load_paths'
13  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/initializer.rb     301     in `each'
14  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/initializer.rb     301     in `add_gem_load_paths'
15  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/initializer.rb     132     in `process'
16  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/initializer.rb     113     in `send'
17  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/rails-2.3.5/lib/initializer.rb     113     in `run'
18  /var/www/ytndweb/data/www/rc.yetonado.ru/config/environment.rb  10  
19  /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb     36  in `gem_original_require'
20  /usr/local/rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb     36  in `require'
21  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     222     in `preload_application'
22  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     181     in `initialize_server'
23  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/utils.rb     572     in `report_app_init_status'
24  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     174     in `initialize_server'
25  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb   204     in `start_synchronously'
26  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb   180     in `start'
27  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/classic_rails/application_spawner.rb     149     in `start'
28  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     219     in `spawn_rails_application'
29  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb    132     in `lookup_or_add'
30  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     214     in `spawn_rails_application'
31  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb    82  in `synchronize'
32  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server_collection.rb    79  in `synchronize'
33  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     213     in `spawn_rails_application'
34  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     132     in `spawn_application'
35  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/spawn_manager.rb     275     in `handle_spawn_application'
36  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb   357     in `__send__'
37  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb   357     in `server_main_loop'
38  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/lib/phusion_passenger/abstract_server.rb   206     in `start_synchronously'
39  /usr/local/rvm/gems/ruby-1.8.7-p352/gems/passenger-3.0.9/helper-scripts/passenger-spawn-server  99  

Answer 1

Preface: I work for New Relic.

Instead of using config.gem just add:

 require "newrelic_rpm"

after the initializer and it should work just fine :) I wish I had a reason why you have to do it that way, but I don't. It's just an ol' trick I remember when I was still working on Rails 2.x apps (I never had good luck with config.gem).