# NameError in Rails/infoController#properties ( uninitialized constant ActiveRecord::Base::SQLite3 ) **URL:** \ **Category:** Rails\ **Created:** [August 2, 2008, 1:07am UTC](https://www.ruby-forum.com/t/nameerror-in-rails-infocontroller-properties-uninitialized-constant-activerecord-sqlite3/144788 "2008-08-02T01:07:52Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![javaDeveloper](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/94ad74/32.png) [@javaDeveloper](https://www.ruby-forum.com/u/javaDeveloper)\ **Post date:** [August 2, 2008, 1:07am UTC](https://www.ruby-forum.com/t/nameerror-in-rails-infocontroller-properties-uninitialized-constant-activerecord-sqlite3/144788/1 "2008-08-02T01:07:52Z")
I am trying to setup my RubyOnRails environment as mentioned in the RailSpace book ( RailsSpace: Building a Social Networking Website with Ruby on Rails ), pg 18. However when I click on the “About your application’s environment” link, I get the following : NameError in Rails/infoController#properties uninitialized constant ActiveRecord::Base::SQLite3 sqlite3 is setup correctly, I am able to create my own database and query it. With Mongrel I get this stack trace : Processing InfoController#properties (for 127.0.0.1 at 2008-08-01 14:41:02) [GET] Session ID: BAh7BiIKZmxhc2hJQzonQWN0aW9uQ29udHJvbGxlcjo6Rmxhc2g6OkZsYXNo SGFzaHsABjoKQHVzZWR7AA==–41dd781d7835c4f0356f92927fa3dbfd6ae447a0 Parameters: {“action”=\>“properties”, “controller”=\>“rails/info”} Processing InfoController#properties (for 127.0.0.1 at 2008-08-01 14:41:02) [GET] Session ID: BAh7BiIKZmxhc2hJQzonQWN0aW9uQ29udHJvbGxlcjo6Rmxhc2g6OkZsYXNo SGFzaHsABjoKQHVzZWR7AA==–41dd781d7835c4f0356f92927fa3dbfd6ae447a0 Parameters: {“action”=\>“properties”, “controller”=\>“rails/info”} NameError (uninitialized constant ActiveRecord::Base::SQLite3): /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active\_support/dependencies.rb:492:in `const_missing' /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/ active_record/connection_adapters/sqlite3_adapter.rb:13:in`sqlite3\_connection’ /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/ active\_record/connection\_adapters/abstract/connection\_specification.rb: 292:in `connection=' /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/ active_record/connection_adapters/abstract/connection_specification.rb: 260:in`retrieve\_connection’ /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/ active\_record/connection\_adapters/abstract/connection\_specification.rb: 78:in `connection' /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/ active_record/query_cache.rb:8:in`cache’ /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action\_controller/caching/sql\_cache.rb:12:in `perform_action' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action_controller/base.rb:529:in`process\_without\_filters’ /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action\_controller/filters.rb:569:in `process_without_session_management_support' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action_controller/session_management.rb:130:in`process’ /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action\_controller/base.rb:389:in `process' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action_controller/dispatcher.rb:149:in`handle\_request’ /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action\_controller/dispatcher.rb:107:in `dispatch' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action_controller/dispatcher.rb:104:in`dispatch’ /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action\_controller/dispatcher.rb:120:in `dispatch_cgi' /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action_controller/dispatcher.rb:35:in`dispatch’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/…/lib/mongrel/ rails.rb:76:in `process' /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/ rails.rb:74:in`process’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 159:in `process_client' /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 158:in`process\_client’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 285:in `run' /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 285:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 268:in `run' /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/ configurator.rb:282:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/ configurator.rb:281:in `run' /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails: 128:in`run’ /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel/ command.rb:212:in `run' /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails: 281 /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active_support/dependencies.rb:502:in`load’ /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active\_support/dependencies.rb:354:in `new_constants_in' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active_support/dependencies.rb:502:in`load’ /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/servers/ mongrel.rb:64 /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `require' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active_support/dependencies.rb:509:in`require’ /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active\_support/dependencies.rb:354:in `new_constants_in' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/ active_support/dependencies.rb:509:in`require’ /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/ server.rb:39 /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `require’ script/server:3 Rendering /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action\_controller/templates/rescues/layout.erb (internal\_server\_error) I am totally new to Ruby on Rails, so have no clue on what to fix. From the above it appears that I don’t have the SQLite3 environment setup correctly for Rails. Any idea on what I need to setup ? Thanks.