mysql2_connection

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 9
    def mysql2_connection(config)
      config = config.symbolize_keys

      config[:username] = 'root' if config[:username].nil?

      if Mysql2::Client.const_defined? :FOUND_ROWS
        config[:flags] = Mysql2::Client::FOUND_ROWS
      end

      client = Mysql2::Client.new(config)
      options = [config[:host], config[:username], config[:password], config[:database], config[:port], config[:socket], 0]
      ConnectionAdapters::Mysql2Adapter.new(client, logger, options, config)
    rescue Mysql2::Error => error
      if error.message.include?("Unknown database")
        raise ActiveRecord::NoDatabaseError.new(error.message, error)
      else
        raise
      end
    end