mysql_connection

# File activerecord/lib/active_record/connection_adapters/mysql_adapter.rb, line 9
    def self.mysql_connection(config) # :nodoc:
      config = config.symbolize_keys
      host     = config[:host]
      port     = config[:port]
      socket   = config[:socket]
      username = config[:username] ? config[:username].to_s : 'root'
      password = config[:password].to_s
      database = config[:database]

      unless defined? Mysql
        begin
          require 'mysql'
        rescue LoadError
          raise "!!! Missing the mysql gem. Add it to your Gemfile: gem 'mysql', '2.8.1'"
        end

        unless defined?(Mysql::Result) && Mysql::Result.method_defined?(:each_hash)
          raise "!!! Outdated mysql gem. Upgrade to 2.8.1 or later. In your Gemfile: gem 'mysql', '2.8.1'"
        end
      end

      mysql = Mysql.init
      mysql.ssl_set(config[:sslkey], config[:sslcert], config[:sslca], config[:sslcapath], config[:sslcipher]) if config[:sslca] || config[:sslkey]

      default_flags = Mysql.const_defined?(:CLIENT_MULTI_RESULTS) ? Mysql::CLIENT_MULTI_RESULTS : 0
      default_flags |= Mysql::CLIENT_FOUND_ROWS if Mysql.const_defined?(:CLIENT_FOUND_ROWS)
      options = [host, username, password, database, port, socket, default_flags]
      ConnectionAdapters::MysqlAdapter.new(mysql, logger, options, config)
    end