What’s wrong with my local Rails environment?

Question

There is a Rails application I started a full year ago. It’s a Rails 2.3 app.

Now, someone else has made remote changes (it’s on Github, sorry, but it’s private). And I have done

sudo gem update

that is, updated all my gems, including Rails (to 3).

Realizing this, I have done

rake:freeze:edge RELEASE=2.3.8

or whatever to make this release use that version of rails, hoping this was the solution.

however, no such luck so far.

I get errors trying to start the server, AND trying to run script/console (though it’s more successful).

Note that this exact application works just fine on EngineYard.

Server:

 $ script/server
 => Booting Mongrel
 => Rails 2.3.8 application starting on http://0.0.0.0:3000
 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/yaml.rb:133:in `load': syntax error on line 45, col 3: `' (ArgumentError)
  from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/yaml.rb:133:in `load'
  from /Users/ajh/Sites/PROJECT_NAME/config/../vendor/rails/railties/lib/initializer.rb:902:in `database_configuration'
  from /Users/ajh/Sites/PROJECT_NAME/config/../vendor/rails/railties/lib/initializer.rb:437:in `initialize_database'
  from /Users/ajh/Sites/PROJECT_NAME/config/../vendor/rails/railties/lib/initializer.rb:141:in `process'
  from /Users/ajh/Sites/PROJECT_NAME/config/../vendor/rails/railties/lib/initializer.rb:113:in `send'
  from /Users/ajh/Sites/PROJECT_NAME/config/../vendor/rails/railties/lib/initializer.rb:113:in `run'
  from /Users/ajh/Sites/PROJECT_NAME/config/environment.rb:11
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
  from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
  from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in'
  from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/activesupport/lib/active_support/dependencies.rb:156:in `require'
  from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/railties/lib/commands/server.rb:84
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
  from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
  from script/server:3

Console:

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/yaml.rb:133:in load':ArgumentError: syntax error on line 45, col 3:rai'

And when, in console, I try to use a defined model:

@mm = MyModel.find(:all) NameError: uninitialized constant MyModel from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/activesupport/lib/active_support/dependencies.rb:443:in load_missing_constant' from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/activesupport/lib/active_support/dependencies.rb:80:inconst_missing' from /Users/ajh/Sites/PROJECT_NAME/vendor/rails/activesupport/lib/active_support/dependencies.rb:92:in `const_missing' from (irb):1

Answer 1

My database.yml had a stray end keyword. Cleaning up that file solved my problems. Thanks to Garrett for pointing me in the right direction!