Hi. Whenever I use activerecord I get this error NameError: uninitialized constant Mysql. I installed the mysql 2.7 gem and I'm on Rails 1.1.6 / Ruby 1.8.4. The gem was built successfully using 'gem install -- --with-mysql-config=/usr/local/mysql/bin/mysql_config'.
Here's a sample trace of the error in 'script/console':
User.find 1
NameError: uninitialized constant Mysql from /usr/local/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:123:in `const_missing' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:133:in `const_missing' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/mysql_adapter.rb:34:in `mysql_connection' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/connection_specification.rb:251:in `connection_without_query_cache=' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/query_cache.rb:54:in `connection=' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/connection_specification.rb:220:in `retrieve_connection' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/abstract/connection_specification.rb:78:in `connection' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/base.rb:764:in `sanitize' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/base.rb:950:in `find_one' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/base.rb:941:in `find_from_ids' from /usr/local/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/base.rb:382:in `find' from (irb):3
This is on Centos 4.3, and I've tried rebooting just as some posts suggested.